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. 25, 1992
Filed:
Jul. 10, 1990
Yoshihiko Tairaka, Sakai, JP;
Masayoshi Idomoto, Minoo, JP;
Takeda Chemical Industries, Ltd., Osaka, JP;
Abstract
A method of producing a rigid urethane foam, which comprises reacting a blend polyol consisting of a polyol having a hydroxyl value of 300 to 450 mg KOH/g as prepared by using an acyclic sugar alcohol of 5 to 6 carbon atoms as an initiator and one or more other polyols, said blend polyol having a sugar alcohol content of 3 to 14 weight % and an average hydroxyl value of 300 to 430 mg KOH/g, with a polyisocyanate using 4.0 to 7.0 weight parts of water based on 100 weight parts of said polyol composition as a blowing agent, can reduce the CFC requirements by 50 to 100 percent as compared with the known production technology for rigid urethane foams and, moreover, the adhesive property of the resulting foam is not inferior to that of the conventional urethane foam.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile