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. 21, 1993
Filed:
Nov. 08, 1990
Satoshi Ozaki, Aichi, JP;
Tsukuru Izukawa, Aichi, JP;
Haruhiko Kawakami, Aichi, JP;
Takayoshi Masuda, Aichi, JP;
Toshio Nozawa, Kanagawa, JP;
Mitsui Toatsu Chemicals, Inc., Tokyo, JP;
Abstract
The present invention relates to a polyol, polyurethane resin, rigid polyurethane foam, preparation process thereof and a preparation process of a rigid polyurethane foam composite. The polyol comprises an epoxy resin based polyol, which may be combined with a phenol resin based polyol component and/or an aromatic amine based polyol component. The polyurethane resin, foam and composite using the polyol as a raw material has resistance to dissolution in a hydrochlorofluorocarbon and a hydrofluorocarbon which are foaming agents having very low public environmental hazards and can be used as a thermal insulation material or a thermal insulation structure for refrigerators, freezers, insulation panels, ships and vehicles.