End functionalized polysiloxane surfactants in carbon dioxide formulations
US6270531A · kind A · utility
23Cited by
15References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 28, 1998 |
| Grant date | Aug 7, 2001 |
| Priority date | — |
| Expiry date | Aug 28, 2018 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06P1/94
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for dry-cleaning articles such as fabrics and clothing in carbon dioxide comprises contacting an article to be cleaned with a liquid dry cleaning composition for a time sufficient to clean the fabric. The liquid dry-cleaning composition comprises a mixture of carbon dioxide, water, and an end-functional polysiloxane surfactant. After the contacting step, the article is separated from the liquid dry cleaning composition. The method is preferably carried out at ambient temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.