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.
Claims21
A liquid dry-cleaning composition, said composition comprising:
- (a) from 0.1 to 10 percent water;
- (b) carbon dioxide;
- (c) from 0.1 to 10 percent surfactant, wherein said surfactant is 3-([2-hydroxy-3-diethylamino]propoxy) propyl terminate polydimethyl siloxane;
- and
- (d) from zero to 50 percent of an organic co-solvent.
A composition comprising:
- (a) liquid or supercritical carbon dioxide;
- (b) from 0.001 to 30 percent surfactant, wherein said surfactant is 3-(propoxy) propyl terminate polydimethyl siloxane.
A composition comprising:
- (a) liquid or supercritical carbon dioxide;
- (b) from 0.001 to 30 percent surfactant, wherein said surfactant is 3-(propoxy) propyl terminate polydimethyl siloxane;
- and
- (c) from 0.01 to 50 percent of an organic co-solvent.
A liquid dry-cleaning composition, said composition comprising:
- (a) from 0.1 to 10 percent water;
- (b) carbon dioxide;
- (c) from 0.1 to 10 percent surfactant, wherein said surfactant has the following formula:
- wherein R is selected from the group consisting of haloalkyl and phenyl, X1 and X2 are end-functional CO2-phobic groups, and n is from 1 to 10,000;
- and
- (d) from zero to 50 percent of an organic co-solvent.
A composition comprising:
- (a) liquid or supercritical carbon dioxide;
- (b) from 0.001 to 30 percent surfactant, wherein said surfactant has the following formula:
- wherein R is selected from the group consisting of haloalkyl and phenyl, X1 and X2 are end-functional CO2-phobic groups, and n is from 1 to 10,000.
A composition comprising:
- (a) liquid or supercritical carbon dioxide;
- (b) from 0.001 to 30 percent surfactant, wherein said surfactant wherein said surfactant has the following formula:
- wherein R is selected from the group consisting of haloalkyl and phenyl, X1 and X2 are end-functional CO2-phobic groups, and n is from 1 to 10,000;
- and
- (c) from 0.01 to 50 percent of an organic co-solvent.
Dependencies are inferred from the claim text.