The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 08, 2002
Filed:
Feb. 04, 2000
Sharon Harriott Jureller, Haworth, NJ (US);
Judith Lynne Kerschner, Fairlawn, NJ (US);
Dennis Stephen Murphy, Leonia, NJ (US);
Lever Brothers Company, division of Conopco, Inc., New York, NY (US);
Abstract
A system for dry cleaning soils from fabrics comprising densified carbon dioxide and a surfactant in the densified CO . The densified carbon dioxide is in a temperature range of about −78.5° C. to about 100° C. and a pressure range of about 14.7 to about 10,000 psi. At least 0.1% by volume of a modifier is preferably present. The surfactant has a polysiloxane a branched polyalkylene oxide or a halocarbon group which is a functional CO -philic moiety connected to a CO -phobic functional moiety. The surfantant either exhibits an HLB of less than 15 or has a ratio of siloxyl to substituted siloxyl groups of greater than 0.5:1.