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. 02, 1996
Filed:
Mar. 24, 1995
Applicant:
Inventors:
Joachim Werner, Bethel Park, PA (US);
Scott A Kane, Wellsburg, WV (US);
Eric F Boonstra, Oakdale, PA (US);
Herman P Doerge, Pittsburgh, PA (US);
Assignee:
Bayer Corporation, Pittsburgh, PA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08J / ; C11D / ; C23G / ; C23G / ;
U.S. Cl.
CPC ...
521131 ; 203 67 ; 203 68 ; 252364 ; 252350 ; 521159 ; 521164 ; 521167 ; 521170 ; 521174 ; 510177 ; 510408 ;
Abstract
Azeotropic compositions made up of from about 64 to about 80% by weight of 1,1,1,4,4,4-hexafluorobutane and from about 20 to about 36% by weight of 2-methyl butane have been found to be particularly useful as blowing agents for the production of polyurethane foams.