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. 09, 1982
Filed:
Dec. 29, 1980
Applicant:
Inventors:
John C Wollensak, Bloomfield Hills, MI (US);
Kryn G Ihrman, Farmington, MI (US);
Assignee:
Ethyl Corporation, Richmond, VA (US);
Primary Examiner:
Int. Cl.
CPC ...
B29F / ; C08G / ;
U.S. Cl.
CPC ...
2643286 ; 26432816 ; 26432817 ; 528 65 ; 528 85 ; 528502 ;
Abstract
Polyurethanes can be produced using dihydroxyaromatic compounds as chain extenders. Preferred polyurethanes of this type are RIM (reaction injection molding) molded products or cast elastomers. The dihydroxyaromatic compounds are preferably selected from: