Process for dry-cleaning textiles and microemulsion dry cleaning composition for the use therein
US4659332A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 20, 1982 |
| Grant date | Apr 21, 1987 |
| Priority date | — |
| Expiry date | Sep 20, 2002 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06L1/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Textiles are washed in a fluid dry cleaning composition in the form of a microemulsion of an aqueous phase in perchloroethylene, comprising as the principal ingredients: ______________________________________ Percent by Weight ______________________________________ Perchloroethylene 65-93.8 Emulsifier composed of a mixture of 2-6 (a) a calcium salt of an alkyl-aryl sulphonic acid with a total of 14 to 22 carbon atoms; and (b) a non-ionic surface-active hydrophobic alkylene oxide adduct, in which the alkylene oxide is in the form of ethylene oxide or a mixture of ethylene oxide and alkylene oxide with 3 to 4 carbon atoms, and in which the hydrophobic part of the adduct has from 8 to 30 carbon atoms, in a weight ratio (a):(b) within the range 1:4 to 3:1 Aliphatic monoalcohol having from 4 to 0.2-4 10 carbon atoms Water 4-20 the ratio of the weight of the water to the weight of the emulsifier being in excess of 2:1. ______________________________________
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.