BACKGROUND OF THE INVENTION Detergents and other cleaning compositions for use in laundry, dishwashing, floor cleaning and carpet cleaning applications are numerous and well known in the art. Generally these consist of one or more anionic. nonionic, or cationic surfactants, builders, enzymes, emulsifiers, stabilizers. pH modifiers and the like.

The present invention comprises a unique combination of surfactants and other excipients with a soil release polymer for enhanced cleaning and subsequent resistance to soilation in laundry bar soaps, clothes dryer sheets, fabric softener sheets and carpet cleaners. Laundry bar soaps, although not common in the United States. are used throughout the rest of the world, mostly in third world countries where clothes are manually washed by hand. Obviously, these systems are not as sophisticated and effective as the presently available detergent compositions for use in electric washers, dryers and carpet cleaning machines. Nevertheless, there is a rowing need in this area for detergent systems that not only effectively clean the soiled materials but also protect the surface thus

cleaned by resisting subsequent re-deposition of dirt. grease, oils and the like.

United States Patent No. 5, 510, 042 to Hartman et al. discloses and claims fabric softening bar compositions comprised of from about 40 wt% to 90 wt. °/o of a hydrophobic fabric softener, 5. 0 wt% to about 30 wt% of a nonionic surfactant and water.

The fabric softener is selected from the group comprising quaternary ammonium compounds, carboxylic acid salts of tertiary amines, sorbitan esters of fatty alcohols and the like. The compositions are asserted to be low sudsing, low lathering, non-detersive fabric softening compositions.

United States Patent No. 5,813, 086 to Ueno et al. discloses a carpet cleaner device that cleans the carpets using a foam composition comprised of. 005% lauryl alcohol combined with 0.1% sodium lauryl sulfate in water. It is further disclosed however, that other suitable agents comprising anionic surfactants such as alkyl ester sulfates, nonionic surfactants such as alkyl phenols, ampholytic surfactants such as alkyl dimethyl amine oxides as well as higher order fatty alcohols may also be used.

United States Patent No. 5,728, 669 to Tyerech teaches a carpet cleaning composition comprising urethane perfluoroalkyl esters, oxidizing agents, anionic surfactants and nonionic surfactants. The compositions are asserted to be effective in the removal of oxidizable carpet stains and for imparting oil repellancy to the carpet fibers.

Published International Application No. W098/31776 Al to Tyerech discloses carpet cleaning compositions consisting of a mixture of one or more anionic, nonionic and amphoteric surfactants in an amount of from about 0.1 wt. % to 11.0 wt%, an amino-polycarboxylic acid salt that serves as a resoiling inhibition agent in an amount of from about 0.1 wt% to 6.0 wt%, an organic solvent in an amount of 0.1-5. 0 wt. % and

additives in an amount of about 0-20 wt. °, aO.

Usually most commercially available carpet cleaning compositions are comprised of primary anionic surfactants, one or more amphoteric and/or nonionic secondary surfactants, an acrylic soil release polymer as an antiredeposition agent, a stabilizer and a solvent. None of the compositions known in the prior art utilize a copolyester soil release polymer in a cleaning system that provides the superior cleaning and stain-removal capabilities as those disclosed herein.

SUMMARY OF THE INVENTION The present invention comprises novel cleaning compositions and their incorporation in a variety of end use formulations such as laundry bar soaps, carpet cleaners and laundry additives such as pre-wash spot removers and fabric softener sheets for use in the dryer. The compositions are comprised of a unique blend of a novel sulfonated copolyester soil release polymer, a surfactant blend consisting of one or more surfactants and amphoteric/zwitterionic surfactants, a stabilizer, a builder, a co-solvent, processing aids an aminocarboxylic or carbonate salt and water. A secondary surfactant component comprising one or more gemini type surfactants may also be added to the composition. The cleaning compositions are particularly useful in carpet cleaning compositions, heat activated laundry dryer fabric softener sheets and laundry bar soaps.

DETAILED DESCRIPTION OF THE INVENTION The cleaning compositions of the present invention provide a surprisingly superior, efficacious cleaner that not only readily removes dirt, soil and stains from hard

surfaces, but also prevents the re-deposition of these materials onto the surface of whatever is being cleaned. The basic cleaning composition can be formulated into one of a number of different applications and additional excipients may be added as desired to more specifically tailor the formulation to its end use application. In particular, superior carpet cleaning, laundry bar soap compositions and dryer sheets and fabric softener sheets are realized.

Central to the novelty and efficacy of the cleaning compositions of the present invention is the incorporation of a sulfonated co-polyester soil release copolymer which is represented by the general formula: - [C (O)-Ar-C (O)-O- (CH, CH20) a] b- wherein-C (O)-Ar-C (O)- is terephthalate, isophthalate or sulfoisophthalate, a is a whole number of from 1-4 and b is an anion such as-S03,-P03, CI etc.

There water dispersible or water soluble sulfonated polyesters are prepared by the esterification and/or transesterification and polycondensation of a monomer composition. These are based on an unsulphonated diacidic monomer (A), as opposed to a sulfonated diacide monomer (SA), consisting of at least one dicarboxylic acid or anhydride chosen from terephthalic, isophthalic and 2,6-naphthalenedicarboxylic acids, anhydrides or their diesters in a quantity corresponding to a molar ratio (A)/ (A) + (SA) of the order of 95/100 to 60/100, preferably of the order of 93/100 to 65/100; a sulphonated diacidic monomer (SA) consisting of at least one sulphonated aromatic or sulphonated aliphatic dicarboxylic acid or anhydride, or their diesters, in a quantity corresponding to a molar ratio (SA)/ (A) + (SA) of the order of Si100 to 40/100, preferably of the order of 7/100 to 35/100, it being possible for up to 50 mol %, preferably up to 30 mol %, of the quantity of

unsulphonated diacidic monomer (SA) to be replaced with a hvdroxylated diacidic monomer (HA) consisting of at least one hydroxylated aromatic or aliphatic dicarboxylic acid or anhydride or a diester of the said hydroxylated aromatic or aliphatic dicarboxvlic acid.

These polyesters are also comprised of a polvoi monomer (P) consisting of at least one polyol chosen from ethylene glycol, propylene gylcol, diethylene glycol, dipropylene glycol, glycerol, 1,2. 4-butanetriol and 1, 2, 3-butanetriol, in a quantity corresponding to a ratio of number of OH functional groups of the polyol monomer (P)/number of COOH functional groups or functional group equivalents of the diacidic monomers (A) + (SA) + (HA) of the order of 1.05 to 4, preferably of the order of 1. 1 to and very particularly of the order of 1.8 to 3 in that the sulphonated diacidic monomer (SA) consists of at least one sulphonated aromatic dicarboxylic acids or anhydrides and of sulphonated aliphatic acids or anhydrides or their diesters when the polyol monomer (P) does not contain any polyol other than a glycol or when the hydroxylated diacidic monomer (HA) is absent and in that the said sulphonated polyesters exhibit a number molecular mass lower than 20,000, a sulfur weight content of the order of 0.5 to 10%. preferably of the order of 1. 2 to 8% and a hydroxyl functional group content, expressed as OH equivalent/kg of polymer, higher than The copolymers and their preparation are more specifically set forth in co- pending application U. S. S. N. 08/737, 548* which corresponds to WO95/32997 published Dec. 7, 1995, and PCT/FR/95/00658, filing date \fay 19,1995* all of which are incorporated herein by reference in their entirety.

The liquid hard surface cleaner rinse compositions of the present invention

consist of the anionic surface active polymer, a primary anionic, nonionic or amphoteric surfactant, water, and a number of other optional ingredients which can vary as desired by

the formulator depending on the particular application, strength necessary, etc. Taken in their broadest aspect, the anionic ester polymer surfactants of the present invention comprise an oligomenc ester backbone which preferably contains anionic hydrophiles connected to the ester backbone by means of aryl groups or by an ester or ether linkage.

Preferably, the anion source is a sulfonated group.

Polymers of the subject invention encompass oligomeric (low molecular weight polymeric), substantially linear esters. These esters comprise, in their backbone, oxyalkyleneoxy, preferably oxy-1, 2-propyleneoxy and polyoxyethylene units, and hydrophobic aryldicarbonyl, preferably oxy-1, 2-propyleneoxy and oxyethyleneoxy units, and hydrophobic aryldicarbonyl, preferably terephthaloyl units. Preferred esters additionally comprise units of sulfonsophthalate and, optionally, poly (oxyethylene) oxy units having a degree of polymerization from about 2 to about 4. Mixtures of such esters with reaction by-products and the like retain their highly effective surface active properties when such mixtures contain at least about 10%, preferably at least about 25%, more preferably at least about 50%, by weight, of the subject esters. The esters useful herein are of relatively low molecular weight (i. e., generally below the range of fiber-forming polyesters) typically ranging from about 500 to about about 20,000, preferably from about 550 to about 8,000, also preferably from about 650 to about 2500.

Preferred anionic hydrophiles connected to the ester backbone include sulfoaroyl units, especially sulfobenzoyl units of the formula (MO, S) (C6H4) C (O)- wherein M is a salt-forming cation such as sodium or tetraalkylammonium. Preferably M is sodium. Preferably not more than 0.15 mole fraction of the sulfobenzoyl backbone units are in para-form. More preferred are the sulfobenzoyl backbone units being essentially in

ortho-ormeta-form.

Other preferred backbone units include those derived from sulfonated polyethoxyipropoxy groups, which are connected to the backbone by an ester linkage.

Preferred are those of the formula (MO3S) (CH,) m (RO) n-, wherein M is a salt-forming cation such as sodium or tetraalkylammonium; m is 0 or 1, preferably 0; R is ethylene, propylene, or a mixture thereof, preferably ehtylene; and n is on average from 1 to about 20, preferably 1-5. More preferred are capping units derived from monomers selected from the group comprising sodium 2- (2-hydroxyethoxy) ethanesulfonate, sodium.

2- (2 (hydroxyethoxy) ethoxy) ethanesulfonate, and 2- (2- (2-hydroxyethoxyethoxy) ethoxy) ethanesulfonate.

Still other preferred backbone units include ethoxylated or propoxylated phenolsulfonate units of the formula MO3S (C6H4) (OR) p-wherein M and R are as defined above, and p is a number of from about 1 to about 20, preferably from about 2 to about 10.

Additionally suitable preferred backbone units include modified poly (oxyethylene) oxy monoalkyl ether units of the formula R"O (CH, CH2O) k- wherein R" is about C,. C,, preferably about Cl-C2 saturated alkyl, and k is a number of from about 3 to about 100, preferably from about 5 to about 50.

The ester"backbone"of the surfactant polymers, by definition, comprises all the anionic hydrophiles that are incorporated into the esters and these are interconnected by means of ester bonds.

The essential oxyalkyleneoxy units of the backbone of the subject polymers

are mixtures of symmetrical (a)-OCH, CH, O- (oxvethyleneoxv) units with unsymmetrical (b)-OCH (Ra) CH (Rb) O- (oxy-1, 2-alkyleneoxy) units, wherein Ra and Rb are selected so that in each of the units, on of Ra or Rb is H and the other is non-hydrogen R group (as specified below), or Ra and RI can be different non-hydrosen R groups. The (b) units are believed to provide a sufficiently unsymmetrical character required for stability of the desired viscosity of the anionic or nonionic surfactant polymers, whereas the (a) units are believed to provide sufficient symmetry for superior surface active functionality. A convenient measure of the unsymmetrical character required is given by the mole ratio of (a) units to (b) units. For the subject invention processes, the ratio of (a) units to (b) units in the subject polymers preferably varies from about 1: 2 to about 4: 1. At a ratio of greater than about 4: 1, the polymers spontaeously change from an amorphous character to a crystalline form quickly, and are not useful in commercial scale processes where concentrated aqueous solutions are prepared and kept for more than a few minutes. At a ratio less than about 1 : 2, the polymer do not tend to change from amorphous to crystalline form. As a result, more preferred ratios of (a) units to (b) units in the subject polymers is from about 1: 1 to about 3: 1 and more preferred still is from about 1.3: 1 to about 2: 1.

In the above paragraph, R is preferably a non-hydrogen, non-charged group with a low molecular weight (typically below about 500). R is chemically unreactive (especially in that it is a non-esterifiable group) and is comprised of C and H, or of C, H and O. The preferred R groups are selected from lower n-alkyl groups, such as methyl, ethyl, propyl and butyl, especially methyl. Thus, the preferred oxy-1,2 alkyleneoxy and oxy-1, 2-hexyleneoxy units. Especially preferred are oxy-1. 2-propyleneoxy as (b) units.

The backbones of the subject esters comprise, per mole of ester, from about

0.5 to about 66 moles of the oxyalkyleneoxy units, preferably from about 1 to about 22 moles, more preferably from about 3 to about 16 moles.

Certain non-charged, hydrophobic aryl dicarbonyl units are also in the backbone of the subject polymers. Preferably, these are exclusively terephthalovl units.

Other non-changed, hydrophobic dicarbonyl units, such as isophthaloyl, adipoyl, or the like, can also be present if desired, provided that the soil release properties of esters (especially polyester substantivity) are not significantly diminished. These other, non- charged, hydrophobic dicarbonyl units can aid in providing sufficient irregularity in the subject esters to avoid a too great tendency to crystallize.

The backbones of the subject esters comprise, per mole of ester, from about 1 to about 40 moles of the hydrophobic aryl dicarbonyl units; preferably from about 2 to about 24 moles, more preferably from about 3 to about 14 moles.

Generally, if it is desired to modify the units of the esters, use of additional hydrophillic units is preferred over the use of additional, non-charged, hydrophobic units.

To this end, minor amounts, preferably comprising less than about 5% of the molecular weight of the ester, of additional units such as di-or tri- (oxyethylene) oxy units are incorporated into the esters.

It is also possible to introduce charged, hydrophilic units into the backbone; preferably such units comprise less than about 20%, more preferably less than about 14% of the backbone units. One example is to incorporate a charged moiety Rc in place of one or more Ra or Rb moieties of the above oxy-1, 2alkyleneoxy units. Such Rc moiety preferably has the structure MO, SL-, wherein M is a slat-forming cation such as sodium or tetraalkylammonium, and L is a side chain connecting moiety selected from alkylene,

oxyalkylene, alkyleneoxyalkylene. arylene, oxyarylene, alkylomethoxyarylene, polyoxyalkylene. alkyleneoxyarylene, poly (oxyalkylene), alkylene poly (oxyalkylene), and mixtures thereof. As used in this paragraph, the alkylene moieties are about a C,-C, chain, preferably ethylene or 1, 2-propylene; arylene is preferably phenylene.

As another example, anionic hydrophillic units capable of forming two ester bonds may be included in the backbone of the esters. Suitable anionic hydrophillic units of this specific type are well illustrated by sulfonated dicarbonyl units, such as sulfosuccinyl, i. e., or more preferably, sulfoisophthaloyl, i. e.,-(O) C (C6H3) (SO3M) C (O)- wherein M is a salt-forming cation, such as an alkali metal or tetraalkylammonium ion.

The backbones of the subject esters comprise, per mole of ester, from 0 moles to about 20 moles of sulfonated dicarbonyl units, preferably from about 0.5 moles to about 9 moles, preferably from about 1 mole to about 4 moles.

The anionic and nonionic low molecular weight poly (oxyethylene) oxy/aryldicarbonyl ester polymer surfactants are incorporated in the cleaner formulations in an amount of from about 0.01 wt% to about 5. 0 wt% based upon the total weight of the rinse formulation. Preferably, the ester polymer is in an amount of 0.5 wt. % to 3.0 wt. %.

A second element of the cleaning compositions of the present invention is a surfactant component consisting of one or more and preferably a blend of surfactants selected from the group consisting of anionic surfactants, nonionic surfactants, cationic surfactants, amphoteric surfactants and natural surfactants such as tallow which are commonly found in third world countries. Examples of suitable nonionic surfactants useful in the practice of the present invention include fatty acid glycerine esters, polyglycerine fatty acid esters, higher alcohol ethylene oxide adducts, single long chain

polyoxyethylene lanolin alcohol. polyoxyethylene fatty acid esters, polyoxyethylene glycenne fatty acid esters, polyoxyethylene propylene glycol fatty acid esters. polyoxyethylene sorbitol fatty acid esters, polyoxyethylene castor oil or hardened castor oil derivatives, polyoxyethylene lanolin denvatives, polyoxyethylene fatty acid amides, polyethylene alkyl amines, alkylpyrrolidones. glucamides. alkylpolyglucosides. mono-and dialkanol amides, polyoxyethylene alcohol mono-or diamides, alkylamine oxides and mixtures thereof.

Examples of the anionic surfactants used herein include fatty acid soaps, ether carboxylic acids and salts thereof, alkane sulfonate salts, a-olefin sulfonate salts, sulfonate salts of higher fatty acid esters, higher alcohol sulfate ester salts, fatty alcohol ether sulfate salts, higher alcohol phosphate ester salts, condensates of higher fatty acids and amino acids, and collagen hydrolysate derivatives.

Examples of the amphoteric surfactants used herein include amino acids, betaine, sultaine, phosphobetaines, imidazoline type amphoteric surfactants, soybean phospholipid, and yolk lecithin.

The cleaner concentrate compositions may also optionally contain a secondary surfactant component comprising a class of surface active cleaners known as gemini surfactants. Whereas the conventional surfactants discused earlier are generally linear chain molecules comprised of one hydrophilic"head"portion attached to a hydrophobic"tail"portion, gemini surfactants are comprised of two of these hydrophobic/hydrophilic chains attached by an alkylene bridge. These are described in the literature (Chemtech, Mar. 1993 pp. 30-33) and exhibit unusually low critical micelle concentration values and higher pC-20 values together with superior surface active

characteristics.

Examples of suitable anionic gemini surfactants useful in the compositions of the present invention are disclosed in United States Patent No. 5. 643. 864 to Li et al., and United States Patent No. 5, 710,121 to Tracy et al., both of which are incorporated herein by reference. Examples of suitable nonionic gemini surfactants useful in the compositions of the present invention are disclosed in United States Patent Nos.

5, 846, 926; 5, 811. 384 and 5, 863, 886 all to Tracy et al. which are also incorporated herein by reference. Examples of suitable cationic gemini surfactants useful in the compositions of the present invention are disclosed in United States Patent No. 5, 643, 498 to Li et al. while examples of suitable amphoteric gemini surfactants useful in the compositions of the present invention may be found in United States Patent Nos. 5, 656, 586 to Li et al., 5,789, 371 to Tracy et al. and 5, 846, 923 to Riererson et al., all of which are incorporated herein by reference.

The surfactant or surfactant blend component is incorporated into said cleaning compositions in an amount of from about 5. 0 wt. °/o-80. 0 wt. 00 and preferable from about 20 wt. °,/o tO 50 wt. % based upon the total weight of the cleaning composition.

Any of the commonly used auxilliarv additives such as inorganic salts such as Glauber salt and common salt, builders such as terrapotassium pyrophosphate. humectants, solubilizing agents, deflocculating agents such as sodium tnpolyphasphate.

UV absorbers, softeners, whitening agents such as distyryl biphenvl denvates (Truopal (& cyanunc chlonde. diaminostilbene denvatives. chelating agents such as tetrasodium ethylene diamine tetracetic acid (NaEDTA), solvents, water and oils for pre-spotting stick applicators and cellulosic substrates for fabric softener dryer sheets. Viscosity modifiers

may also be added to the surfactants of the invention or blends thereof with other surfactants as disclosed herein.

When prepared as carpet cleaner formulations, the cleaning compositions of the present invention also include a number of other components which can be tailored for the specific application. Generally, the cleaner will comprise an additional salt such as citnc acid salts, boric acid salts, alkali metal carbonates, aminopolycarboxylic acid salts, an absorbent such as cellulose, zeolite or amorphous silica. All the components are incorporated in an amount of from about 5. 0 wt. % to about 30 wt. % and preferably 4.0- 10 wt. % based on the total weight of the composition.

Laundry bar soaps are primarily used in third-world countries and those poorer countries where clothes washers and dryers are a luxury and a rarity. The laundry bar soaps are used to scrub the clothes and physically beat and pull the dirt out of the soiled fabric. Apart from the sulfonated copolyester soil release copolymer, the surfactant blend and excipients additives the laundry bar soaps may also contain fabric softeners, enzymes, color brighteners, antimicrobial agent, dispersants, bleach or other oxidizing agents. Long chain fatty acid sulfonates may also be employed.

The compositions of the present invention may also be incorporated in automatic clothes dryer sheets to impact desireable tactile and anti-static properties to the clothes as well as giving additional soil release properties. See United States Patent No. 4, 849.257 to Barcher et. al. which is hereby incorporated by reference. The soil release polymer is incorporated in the sheets in an amount of from about 0.5 wt. % to about 50 wt. % as well as from 0.5 wt. % to 50 wt. °Ó of a cationic fabric softener. A deflocculant and viscosity adjuster are also preferably added to the sheets comprising a non-woven fabric substrate,

see U. S. Patent Nos. 4,237, 155 to Kardouche and 4, 103.047 to Zaki et. al. which are also incorporated by reference.

Fabric conditioner sheets may also incorporate the soil release polymer compositions of the present invention for imparting additional protection to the garments while drying them. The fabric soil release components are combined with a fabric softener and a dispersing aid to be released from the sheet when exposed to heat generated during a clothes drying cycle. Suitable fabric softening agents include disteryl dimethyl ammonium methylsulfate, ditallowalkyl dimethyl ammonium methyl sulfate, dibehenyldimethyl ammonium methyl sulfate and dipalmityl dimethylammonium methyl sulfate. More specifically, the fabric softening sheets are prepared from a non-woven absorbant fabric substrate in which the soil release polymer, dispersing aid, fabric softener and viscosity control agent are imbedded. Suitable heat activated laundry dryer fabric softener sheets for the incorporation of the cleaning compound in the present invention and methods for their preparation are fully set forth in U. S. Patent No. 4,849, 257 to Borcher et. al. which is hereby incorporated by reference.

The following examples are provided to more specifically set forth and define particular formulations of the present invention that exhibit superior claiming and soil removing attributes. They are presented for illustrative purposes only, and it is recognized that minor changes and modifications can be made with regards to the components or amounts that are not contemplated herein. To the extent any such changes do not materially alter the final product or its properties it is to be understood that any such differences are encompassed within the spirit and scope of the invention as recited in the subsequent claims that follow.

Example1 A standard rug and upholstery shampoo composition was prepared using the following ingredients in their respective weight percentage (wt amounts.

WEIGHT % 1) Sulphonated Copolyester Soil Release Polymer 2. 0 2) Alkyl Sulfate Anionic Surfactant'7. 0 3) Disodium lauramide anionic surfactant2 15.0 4) Sodium Tripolyphosphate (deflocculating agent) 2.0 5) Ethyl Carbitol (Solvent) 1. 5 6) Cyanuric Chloride/Diaminostilbene Disulfonic Acid'0. 05 7) Water Q. S. to 100% Mix all the ingredients and stir for approximately thirty (30) minutes until a clear. homogenous solution is formed. The rug shampoo exhibited the following physical properties.

PHYSICAL PROPERTIES APPEARANCE CLEAR, WATER-WHITE LIQUID pH 10. 2 SOLIDS 9.5 SPECIFIC GRAVITY 1. 0 VISCOSITY 100 CPS MAX.

Example 2 A laundry bar soap was prepared from the following components in their respective weight percentage (wt%) amounts.

Weight % 1. Sulfonated Copolyester Polymer 0.4 2. Sodium Tripolyphosphate 14.0 3. Dodecyl Benzene Sulfonic Acid 25.0 4. Sodium Sulfate 36.0 5. Sodium Carbonate 17.2 6. Water 7. 4 The laundry bar soap comprising the above listed ingredients was compared in terms of cleaning efficacy performance to a known conventional bar soap that did not contain the soil release polymer. Specifically, they were tested in their abilitv to release oily stains from synthetic fabrics namely, dacron single knit (DSK), dacron double knit (DDK) and a dacron/cotton blend (DCB). The fabrics were first pre-washed, stained and then washed with the laundry bar composition. Two stains were applied to the fabric; one a melted lard and violet dye mix and the other being lipstick. Each stain was applied evenly within a 3.0 cm diameter circle. The stains were allowed to set overnight for approximately sixteen hours in each instance. The reflectance (Rd) of each stain (1-3) on the fabrics was measured using a Gardner reflectometer and the soil release performance was calculated using the formula:

Soil release % = Rd3-Rd2 x 100 % Rdl-Rd2 The results obtained are recorded in the following Tables I-III Table I Detergent Bars: Test Method Development Initial screening Washing Conditions: Tap water Temp; approx. 70° F Hand washing, 15 sec. Scrub each side Stain: liquefied lard/violet dye 6 DSK cloth avg. SAMPLE Dacron/SK Detergentbarw/1%activeSRP 92 Detergentbar control, NO SRP 73.5 Table II Detergent Bar Test Method Development Duplication of results Washing Conditions: Tap Water Temp; approx. 70°F Hand washing, 15 sec. Scrub each side Stain: liquefied lard/violet dye

6 DSK cloth avg. SANIPLE Dacron/SK Detergentbarw/1%active SRP 91 Detergentbarcontrol.NOSRP 61

Table III Detergent Bars: Soil removal with lower soil release polymer concentration in bar (0.25% active) vs. control (no SRP) Washing Conditions: Tap water Temp; 70° F Pre-wash: Scrub each side 15 sec.

Final wash: 15 sec. each side for Soil Release Polymer treated and control set # 1 A second control set had a 2 min. final wash in order to try and remove the soil.

Stain: liquefied lard/violet dye 6 DSK cloth avg. SAMPLE Dacron/SK Detergentbarw/0.25%activeSRP 94 Detergentbarcontrolset#1 675

Clearly, the bar soaps containing the soil release polymer exhibited superior results.

Example 3 A carpet extraction cleaner was prepared using the following components in their respective weight percentage (wt. %) amounts.

WEIGHT % 1. Sulphonated Copolyester Polymer 2.0 2. Sodium Amphocarboxylate Amphoteric Surfactant'2. 0 3. Linear Alcohol Ethyleneoxide/Proplylene Oxide Nonionic Surfactant-9. 0 4. Sodium Polymethylacrylate Anionic Polymer 2.0 5. Glycol Monoether 3.0 6. Tetrapotassium Pyrophosphate 4.0 7. Fragrance/Optical Whitener 1.0 8. Water Q. S. to 100 In order to prepare the cleaner, all the above ingredients were blended together in their respective amounts and mixed until uniformly dispersed for about forty-five (45) minutes. The cleaner had the following physical properties. lMiranol JEM Conc. (Rhodia Inc.) 2Antrarox BL-225 (Rhodia. Inc.) 'Colloid 226/35 (Rhodia)

Phvsical Properties APPEARANCE CLEAR, WATER-WHITE LIQUID pH 11.3 SPECIFIC GRAVITY 1.01 VISCOSITY <1000 CPS Example 4 A liquid steam carpet cleaner was prepared using the following ingredients in their respective weight percentage (wt%) amounts.

Weight % 1. Sulphonated Copolyester Polymer 5.0 2. Linar Alcohol Ethoxlyate Anionic Surfactant4 4.0 3. Nonyl Phenol Aromatic Ethoxylate Nononic Surfactant 1. 0 4. Sodium Polymethacrylate Anionic Polymer6 2. 0 5. Sodium Metasilicate Builder (anhydrous) 7.5 6. Tetrapotassium Pyrophosphate Detergent Base 12.5 7. Water (with, optionally, fragrance and colorant) Q. S. to 100 4Rhodafac RA-600 (Rhodia, Inc.) Igepai co-710 (Rhodia, Inc.) 6Colloid 226/35 (Rhodia. Inc.)

The carpet cleaner was prepared by first dissolving the anhydrous sodium metasilicate in water. The surfactants and polymers were individually added slowly thereafter with constant agitation followed by the addition of the detergent base. The mixture was stirred until a uniform consistency was achieved in about 30 minutes.

PHYSICAL PROPERTIES APPEARANCE CLEAR LIQUID pH (as is) 12. 8 VISCOSITY SPECIFIC GRAVITY 1.04 Example 5 A carpet shampoo with additional grease cutting functionality was prepared using the following components in their respective weight percentage (wt%) amounts.

Weight % 1. Sulphonated Copolyester Soil Release Polymer 1.0 2. Sodium Lauryl Sulfate Anionic Surfactant7 10. 0 3. Disodium Lauramide Anionic Surfactants 3. 0 4. Tetrasodium Ethylenediamine Tetraacetic Acid (EDTA 38% sol.) 5. 0 'Rhodapon SB-8208/S (Rhodia, Inc.) 8Gerapon SBL-203 (Rhodia, Inc.)

5. Glycol Monoether9 5. 0 6. Fragrance, Colorants, Preservatives 1. 0 7. Water Q. S. to 100% To prepare the cleaner composition, the sodium lauryl sulfate anionic surfactant was first mixed with the water until fully dispersed. This was then followed by the addition of the tetrasodium EDTA and the disodium lauramide anionic surfactant. After stirring for approximately thirty (30) minutes, and the system was uniform, the fragrance, dyes and glycol monoether are added. The cleaner exhibited the following properties.

PHYSICAL PROPERTIES APPEARANCE CLEAR, WATER-WHITE LIQUID pH, (as is) 12.0 specific gravity 1.00 viscosity <10 CPS Example 6 A carpet cleaner composition similar to that prepared in example 2 was prepared with 0.5 wt. % and 1.0 wt. % of the soil release polymer incorporated therein. These were tested against the control detergent containing no soil release polymer using the materials and apparatus listed below in the following procedure: Nylon fiber light color carpet (off-white) 9Dowanol EB (Dow Corp.. Midland, Mich.)

Stain Sources: Dirty Motor Oil Red Lipstick Spaghetti Sauce Black Shoe Polish Tea Coffee Analytical Balance Micro Pipette Applicator Sponge White Paper Towels Timer Vacuum Cleaner Steam Cleaner Professional Strength Steam Cleaning Concentrate A. Carpet Preparation The carpet was cleaned side to side and back and forth with professional strength steam cleaning concentrate diluted according to label directions (2oz/gal), using the steam cleaner.

After drying, the carpet was cut into 4"x4"squares and marked on the underside to ensure all nap was going in the same direction to yield similar viewing characteristics (least reflection). Carpet swatches were coded to indicate replicate and product.

B. Staining/Cleaning Two replicates were used for each of the above listed stains. Rdl was measured before swatches were stained. Oil stains were delivered using the micro-pipette, whereas waxy stains were weighed first on the application sponge, then stamped onto the carpet swatches. Oils were applied at a rate of 0. 120. 05g to each carpet swatch within a 2"x2"square template using a spatula. Waxes were applied at 0.1 5+0. 05g weight rate. The stains were allowed to dry overnight before cleaning. Rd2 was measured. Following the directions on the commercial carpet cleaner label, the carpet swatches were blotted, 4 times for 5 seconds each time, using white absorbent paper towels.

Carpets were then treated with 4.00. 1g ofthe appropriate carpet cleaning product from a distance of 4-6 inches. The cleaner compositions were allowed to sit for the time indicated per label directions, to allow the foam to penetrate into the stain. Using an absorbent dry paper towel, stains were cleaned using 5 strokes working from top of the stain through the center. The paper towel was rotated to yield a clean surface and 5 more strokes were completed working from the bottom of the stain through the center. Steps 5 through 7 were repeated 4 more times for each swatch for a total of 5 cleaning cycle treatments. Carpets were allowed to dry and then vacuumed. The reflectance for stain 3 (Rd3) was measured and soil release performance was calculated as in example 2.

% Soil release = Rd2-Rd3 x 100% Rd2-Rdl The following data was obtained with respect to the lipstick and dirty motor oil to stains.

Both stains were tested separately, differences of 10% soil release or greater are visibly identified.

FORMULACLEANINGLipstickMotorOil CYCLES ControlFormula5x19.6152.00 409CarpetCleaner ControlFormula5x44.1280.82 409CarpetCleaner &0. 5 wt.%Soil ReleasePolymer (SRP)&0.5%PF FORMULACLEANINGLipstickMotorOil CYCLES CTRL F-409 5X 17.3584.00 F-409&1.0%SRP SX 68. 37 80.54 FORMULA CLEANINGLipstickMotorOil CYCLES CTRL F-409 as is SX17.5634.24 F-409&1.0%SRPSX 62. 24 0 87.76 Example 7 A laundry dry fabric softener sheet was prepared using the following components in their respective percentage amounts.

Weight % 1. Sulfonated Copolyester Soil Release Polymer 40.0 2. Ditallow dimethylammonium methyl sulfate 3. Bentonite Clay (viscosity adjuster) 3.0 4. Xylene Sulfonate (diffacculant) 12.0 5. Water 5.0 The components are mixed in their respective amounts and the liquid solution is applied to a flexible, non-woven fabric material comprised of cellulosic fibers that are bounded together with a binder resin. The mixture is subjected to high shear for a uniform molten nears which then is heated to about 75°C. Other suitable absorbant materials can be substituted as is known in the art such as rayon fibers, nylon fibers, etc. When added to the drying cycle, fabrics did not cling together, possessed no static charge and had a softer sheen and feel.

1. Repel-O-Text (Rhodia Inc; Cranbury N. J.)