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. 01, 1994
Filed:
Dec. 30, 1992
Thirumurti Narayan, Grosse Ile, MI (US);
Anthony Tantillo, Troy, MI (US);
William G Conger, Grosse Ile, MI (US);
BASF Corporation, Parsippany, NJ (US);
Abstract
Fatty prepolymers and fatty modidified organic polyisocyantes are provided as internal mold release agents useful in Reaction Injection Molded (RIM) parts. A terminal fatty chain-containing molecule having a primary or secondary hydroxyl group, a primary or secondary amine group, an epoxide group, or an isocyanate group is reacted with an organic aromatic polyisocyanate to yield a fatty prepolymer having a urethane linkage, a urea linkage, or an oxazolidinone linkage; or to yield a fatty modified polyisocyanate having an allophanate linkage, a biuret linkage, or a carbodiimide-uretonimine linkage. The terminal chain on the molecule contains at least 8 branched or unbranched, saturated or unsaturated, hydrogen substituted aliphatic carbon atoms in succession or at least 5 branched or unbranched, aliphatic or cycloaliphatic perfluorinated atoms in succession.