Dry cleaning system using densified carbon dioxide and a surfact

Details Dry cleaning system using densified carbon dioxide and a surfact Dry cleaning system using densified carbon dioxide and a surfact

1998-05-06

1999-11-02

Gupta, Yogendra

Cleaning compositions for solid surfaces, auxiliary compositions

Cleaning compositions or processes of preparing

For cleaning a specific substrate or removing a specific...

510285, 510286, 510466, 8142, C11D 182, C11D 339, C11D 343

Patent

active

059770457

ABSTRACT:
A system for dry cleaning soils from fabrics is described which contains densified carbon dioxide combined with a selected surfactant. The densified carbon dioxide is used in a temperature range of about -78.5.degree. C. to about 100.degree. C. and a pressure range of about 14.7 psi to about 10,000 psi. The surfactant is selected from one of two groups of compounds having a formula ##STR1## as described in the text or a second group of siloxane compounds having a formula [AB].sub.y as described. A process for using the dry cleaning system is also described.

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