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:
Feb. 21, 1995
Filed:
Jun. 06, 1994
Applicant:
Inventor:
Guido F Smits, Wijnegem, BE;
Assignee:
The Dow Chemical, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; C08J / ;
U.S. Cl.
CPC ...
25218224 ; 521131 ; 521159 ; 521902 ;
Abstract
This disclosure relates to polyisocyanate-based foams, particularly to polyurethane or polyurethane-polyisocyanurate foam prepared in the presence of a certain blowing agent. The blowing agent, based on total amounts of a) and b), consists of: (a) from about 5 to about 80 mole percent of a C.sub.5-6 alicyclic alkane or mixtures of such; and (b) from about 95 to about 20 mole percent of a mixture of isopentane and n-pentane present in a mole ratio of from about 80:20 to about 20:80.