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:
Dec. 02, 1997
Filed:
Feb. 10, 1994
Applicant:
Inventors:
John F Szabat, Pittsburgh, PA (US);
Charles E Mortimer, Tarentum, PA (US);
Joseph M Sutej, New Brighton, PA (US);
Jeanne L Beaumont, Oakdale, PA (US);
Steven L Schilling, Glen Dale, WV (US);
Harold R Parsons, Wheeling, WV (US);
Robert P Yeater, Moundsville, WV (US);
Assignee:
Bayer Corporation, Pittsburgh, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ; C08J / ; C08G / ; C08G / ;
U.S. Cl.
CPC ...
521131 ; 521107 ; 521113 ; 521130 ; 521164 ; 521170 ; 521174 ; 521175 ; 521902 ; 2521822 ; 25218224 ; 25218226 ; 25218227 ; 25218228 ; 560330 ; 560331 ; 560354 ; 560355 ; 560358 ; 560360 ;
Abstract
A polyisocyanate having an acid value of at least 0.01% HCl is used to produce polyisocyanate, polyisocyanurate and polyurethane urea foams with an HCFC blowing agent. The use of such a polyisocyanate is advantageous because the polyisocyanate does not cause significant decomposition of the HCFC blowing agent.