Title:
界面活性剤
Document Type and Number:
Japanese Patent JP4097821
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a highly biodegradable surfactant by forming a nonionic surfactant containing a ketal group and a polyoxyalkylene group. SOLUTION: A nonionic surfactant having ketal groups and an oxyalkylene group and represented by formula I or II is provided. A compound represented by formula I or II is obtained by dehydratively condensing 1 mol of a polyglycerol having a degree of polymerization of at least 3 with 0.05-10 mol of an aldehyde such as butyraldehyde and a ketone such as methyl propyl ketone at 40-160 deg.C in the presence of an acidic catalyst such as p-toluenesulfonic acid in a nitrogen atmosphere and effecting the addition reaction of the obtained reaction product with an alkylene oxide such as ethylene oxide. In the formulae, R1 to R4, R6, and R7 are each hydrogen or a hydrocarbon group; R5 is a hydrocarbon group; X is hydrogen or -(R8-O)q-H; R8 is a hydrocarbon group; m is 1 or greater; n is 0, 1 or greater; p is 1 or greater; q is 0, 1, or greater.
Inventors:
Takeaki Mizusashi
Yoshiaki Gagged
Kaoru Komiya
Yoshiaki Gagged
Kaoru Komiya
Application Number:
JP36930398A
Publication Date:
June 11, 2008
Filing Date:
December 25, 1998
Export Citation:
Assignee:
ADEKA CORPORATION
International Classes:
A61K8/00; C07D317/22; A61K8/49; C11D1/72; A61Q5/02; C09K23/38; C09K23/42; C11D1/68
Domestic Patent References:
| JP64013080A | ||||
| JP60028944A | ||||
| JP9302087A |
Attorney, Agent or Firm:
Michiharu Soga
Yutaka Ikeya
Hidetoshi Furukawa
Suzuki Kenchi
Masahisa Hase
Keiro Mochizuki
Yutaka Ikeya
Hidetoshi Furukawa
Suzuki Kenchi
Masahisa Hase
Keiro Mochizuki