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. 04, 2001
Filed:
Jul. 24, 1992
Applicant:
Inventor:
Frank Sanns, Jr., Pittsburgh, PA (US);
Assignee:
Bayer Corporation, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08K 3/34 ; C08K 7/00 ; C08L 7/502 ; C08L 7/504 ;
U.S. Cl.
CPC ...
C08K 3/34 ; C08K 7/00 ; C08L 7/502 ; C08L 7/504 ;
Abstract
In accordance with the invention, a reinforcing agent is added to the polyol side before the Reaction Injection Molding (RIM) process. The agent of the invention comprise particulate flakes which are characterized by their fine particle size and high aspect ratio. It was surprisingly found that the incorporation of the agent of the invention in the RIM process yields molded parts with a good combination of properties including flexural and tensile modulus heat sag and reduction in the coefficient of linear thermal expansion and high Distinctness Of Image (DOI) values.