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:
Jul. 30, 1991
Filed:
Nov. 16, 1989
Applicant:
Inventors:
Assignee:
Du Pont-Mitsui Fluorochemicals Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ;
U.S. Cl.
CPC ...
25218224 ; 25218225 ; 252305 ; 252350 ; 264D / ; 521 98 ;
Abstract
A blowing agent composition for use in preparing a polyurethane foam, which is a mixture of dichlorotrifluoroethane and at least one of paraffins having 5 and 6 carbon atoms in a weight ratio of from 97:3 to 70:30.