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:
Oct. 30, 2012
Filed:
May. 17, 2007
Yuuji Kimura, Kamisu, JP;
Takayuki Sasaki, Kamisu, JP;
Yuuji Kimura, Kamisu, JP;
Takayuki Sasaki, Kamisu, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
A process for producing a flexible polyurethane foam having a low transmissibility at resonance frequency, of which a rebound resilience can be suppressed, without using a foam stabilizer, is provided. In production of a flexible polyurethane foam; an isocyanate containing TDI as the main component is used as an isocyanate; and a polyol containing from 20 to 50 mass % of a polyol (A) having an oxyethylene group content of from 10 to 20 mass % and having a hydroxyl value of from 15 to 56 mgKOH/g, which is obtained by subjecting propylene oxide to ring opening addition polymerization to an initiator by using a double metal cyanide complex catalyst, and further subjecting ethylene oxide to ring opening addition polymerization by using an alkali metal compound catalyst or a phosphazenium catalyst, is used as a polyol.