Title:
MACHINE DISHWASHING PROCESS
Document Type and Number:
WIPO Patent Application WO1995014424
Kind Code:
A3
Abstract:
PCT No. PCT/EP94/03805 Sec. 371 Date Aug. 26, 1996 Sec. 102(e) Date Aug. 26, 1996 PCT Filed Nov. 16, 1994 PCT Pub. No. WO95/14424 PCT Pub. Date Jun. 1, 1995A machine dishwashing process for cleaning soiled crockery is provided. The process comprises: (1) optionally prewashing the crockery in a prewash zone; (2) washing the crockery in a wash zone with washing liquor; (3) spraying the crockery from the wash zone with a spraying solution; and (4) rinsing the crockery in a clear washing zone. The washing liquor includes used spraying solution from step (3). The spraying solution has an alkali content of at least 0.8 % by weight. An additive which is substantially free of alkali is supplied to the washing liquor to give a concentration in the washing liquor in the presence of the used spraying solution of at least 0.004 % by weight of complexing agent(s) and/or sequestering agent(s).
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Inventors:
MASSHOFF HANS WILHELM (DE)
PRAECKEL UDO FRITZ WALTER (DE)
PRAECKEL UDO FRITZ WALTER (DE)
Application Number:
PCT/EP1994/003805
Publication Date:
June 29, 1995
Filing Date:
November 16, 1994
Export Citation:
Assignee:
DIVERSEY CORP (CA)
MASSHOFF HANS WILHELM (CA)
PRAECKEL UDO FRITZ WALTER (CA)
MASSHOFF HANS WILHELM (CA)
PRAECKEL UDO FRITZ WALTER (CA)
International Classes:
A47L15/00; A47L15/24; A47L15/44; C11D3/33; C11D3/36; C11D3/37; C11D3/60; C11D7/06; C11D7/08; C11D7/16; A47L15/14; C11D7/26; C11D7/32; C11D7/36; (IPC1-7): A47L15/00; A47L15/24; A47L15/44; C11D3/33; C11D3/37; C11D7/16; C11D3/36; C11D7/36; C11D7/32; C11D7/26
Domestic Patent References:
| WO1991007904A1 | 1991-06-13 | |||
| WO1993005696A1 | 1993-04-01 |
Foreign References:
| US3896827A | 1975-07-29 | |||
| GB1027309A | 1966-04-27 | |||
| US4313451A | 1982-02-02 |
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