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:
Jul. 06, 1993
Filed:
Nov. 30, 1989
Satofumi Yamamori, Kawabe, JP;
Takeda Chemical Industries, Ltd., Osaka, JP;
Abstract
A polyol composition for producing rigid polyurethane foams is disclosed which contains adducts of ethylene oxide or propylene oxide or both to resorcinol, catechol, cresorcinol or their homologues having two hydroxyls at the ortho or meta positions to each other, or adducts of ethylene oxide or propylene oxide or both to bisphenol A in combination with a second polyol and a low molecular weight glycol as a crosslinking agent. The resultant rigid polyurethane foams have such a high heat resistance as to stand the use over a long period under high temperature circumstances.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile