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:
Mar. 16, 1993
Filed:
Apr. 02, 1992
Applicant:
Inventors:
Abid N Merchant, Wilmington, DE (US);
Janet C Sung, Wilmington, DE (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B08B / ; C09K / ; C23G / ; C11D / ;
U.S. Cl.
CPC ...
252 67 ; 252-8 ; 252162 ; 252172 ; 252194 ; 252305 ; 252364 ; 252571 ; 252D / ; 60651 ; 62114 ; 134 12 ; 134 31 ; 134 38 ; 134 40 ; 134 42 ; 174 / ; 174 / ; 264 33 ; 264D / ; 521 98 ; 521131 ;
Abstract
Azeotropic or azeotrope-like compositions of effective amounts of 1,1,2,2,3,3,4,4-octafluorobutane and trans-1,2-dichloroethylene; cis-1,2-dichloroethylene; or 1,1-dichloroethane to form an azeotropic or azeotrope-like composition are disclosed that are useful as cleaning agents, refrigerants, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, expansion agents for polyolefins and polyurethanes and as power cycle working fluids.