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:
Jun. 02, 2015
Filed:
Apr. 18, 2011
Kosuke Yoshitomi, Kanagawa, JP;
Kosuke Yoshitomi, Kanagawa, JP;
BRIDGESTONE CORPORATION, Tokyo, JP;
Abstract
A foam-molded polyurethane foam for a seat pad, particularly for a vehicle, that reduces both shakiness and stress relaxation is provided. The polyurethane foam contains a foaming liquid containing (A) a polyol, (B) a polyisocyanate, (C) water and (D) a catalyst. The polyol (A) contains from 40 to 50% by mass of (a-1) a polyether polyol having a molar ratio of repeating units derived from ethylene oxide and propylene oxide of from 5/95 to 25/75 and a number average molecular weight of from 6,000 to 8,000, and from 5 to 15% by mass of (a-2) a polyether polyol having a molar ratio of repeating units derived from ethylene oxide and propylene oxide of from 0/100 to 20/80 and a number average molecular weight of from 600 to 2,000. The amount of water (C) is 2.0 parts by mass or more per 100 parts by mass of the polyol (A).