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:
Sep. 05, 1978
Filed:
Aug. 02, 1976
Dennis D Howard, Girard, PA (US);
Lord Corporation, Erie, PA (US);
Abstract
Unsaturated addition-polymerizable urethane resins prepared from polyester polyols based on (1) at least one glycol selected from the group consisting of 1,3-butylene glycol and neopentyl glycol; (2) adipic acid; (3) isophthalic acid; and, optionally, (4) at least one aliphatic polyhydroxy compound containing at least three hydroxy groups are characterized by reduced viscosity, improved physical stability, and by improved solubility and compatibility in organic solvents/diluents. Particularly advantageous resins are obtained by employing isocyanate-functional prepolymers based on the subject polyester polyols, with isocyanate-functional prepolymers obtained by reacting the polyester polyol compounds with organic polyisocyanate compounds at an NCO:OH ratio greater than 2:1 being especially preferred, as precursors for such unsaturated addition-polymerizable urethane resins.