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. 15, 1994
Filed:
Dec. 30, 1991
Applicant:
Inventors:
Assignee:
Solvay (Societe Anonyme), Brussels, BE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; C08J / ;
U.S. Cl.
CPC ...
252 67 ; 62114 ; 252162 ; 252172 ; 252305 ; 252364 ; 252D / ; 264 53 ; 264D / ; 521 98 ; 521131 ; 521910 ;
Abstract
A composition including from 40 to 55 mol % of 1,1,1,,2-tetrafluoroethane and from 45 to 60 mol % of methyl chloride; and a composition including from 68 to 75 mol % of 1,1,1,2-tetrafluoroethane and from 25 to 32 mol % of methyl chloride. These compositions are useful as porogenic agents for polystyrene, as refrigerating fluids, and as blowing agents for polyurethane and polyolefin foams.