End functionalized polysiloxane surfactants in carbon dioxide formulations
AssigneeMicell Technologies, Inc.
InventorsJames P. DeYoung, Gina M. Stewart, Bernadette Storey-Laubach
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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.
Claims7
A method for cleaning garments or fabrics in carbon dioxide, comprising:
- contacting a garment or fabric article to be cleaned with a liquid dry cleaning composition for a time sufficient to clean the article, said liquid dry-cleaning composition comprising a mixture of carbon dioxide, water, and a surfactant, wherein said surfactant is 3-([2-hydroxy-3-diethylamino]propoxy)propyl terminated polydimethylsiloxane;
- and then
- separating the article from the liquid dry cleaning composition.
A method for cleaning garments or fabrics in carbon dioxide, comprising:
- contacting a garment or fabric article to be cleaned with a liquid dry cleaning composition for a time sufficient to clean the article, said liquid dry-cleaning composition comprising a mixture of carbon dioxide, water, and a surfactant having the following formula:
- wherein R is selected from the group consisting of trifluoropropyl and phenyl, X1 and
- X2 are end-functional CO2-phobic groups, and n is from 1 to 10,000;
- and then separating the article from the liquid dry cleaning composition.
Dependencies are inferred from the claim text.