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:
Apr. 16, 2002
Filed:
Mar. 24, 1995
Applicant:
Inventors:
Joachim Werner, Bethel Park, PA (US);
Scott A. Kane, Wellsburg, WV (US);
Herman P. Doerge, Pittsburgh, PA (US);
Eric F. Boonstra, Oakdale, PA (US);
Assignee:
Bayer Corporation, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C11D 7/26 ; C11D 7/60 ; C23G 5/024 ; C23G 5/028 ;
U.S. Cl.
CPC ...
C11D 7/26 ; C11D 7/60 ; C23G 5/024 ; C23G 5/028 ;
Abstract
Azeotropic compositions made up of (a) from about 26 to about 72% by weight perfluorohexane and (b) one compound selected from (1) about 36 to about 74% by weight 2-methyl butane or (2) about 28 to about 53% by weight n-pentane in which the sum of the weight percent (a) and weight percent (b) is 100 percent may be used as blowing agents in the production of polyurethane/polyurea foams.