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. 02, 2019
Filed:
Feb. 24, 2016
Achilles Corporation, Tokyo, JP;
Takeshi Kurita, Tokyo, JP;
Yamato Koike, Tokyo, JP;
ACHILLES CORPORATION, Tokyo, JP;
Abstract
A rigid polyurethane foam which has ultrafine cells, has a low thermal conductivity of 0.0190 W/(m·K) or lower, exhibits excellent heat insulating properties and flame retardancy, and has very little impact on global warming, without using a special apparatus such as a gas loading device. Provided is a rigid polyurethane foam which is obtained by mixing and reacting raw materials including a polyol, a polyisocyanate, a blowing agent, and a catalyst. The rigid polyurethane foam contains the polyol containing a polyester polyol having an aromatic component concentration of 17-35 wt. %, and a non-amine-based polyether polyol and/or an aromatic amine-based polyether polyol; the polyisocyanate in which MDI/TDI are mixed at a ratio of 4/6 to 9/1; and the blowing agent containing a halogenated olefin.