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:
Jun. 19, 2001
Filed:
Dec. 10, 1999
Applicant:
Inventors:
Ashok M. Sarpeshkar, Upper St. Clair, PA (US);
Peter H. Markusch, McMurray, PA (US);
Robert L. Cline, Paden City, WV (US);
Corrine M. Gilbert, Aliquippa, PA (US);
Assignee:
Bayer Corporation, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 1/870 ;
U.S. Cl.
CPC ...
C08G 1/870 ;
Abstract
This invention relates to a process for the production of polyurethane elastomers having low compression sets. The process comprises reacting A) an isocyanate component comprising methylene bis(phenyl isocyanate) containing the 2,4′-isomer of methylene bis(phenyl isocyanate), with B) an isocyanate-reactive component, optionally, in the presence of C) one or more additives. The reaction components are processed via the one-shot process at an isocyanate index of 90 to 130.