Title:
POLYURETHANE FOAM FOR SEAT PAD
Document Type and Number:
WIPO Patent Application WO/2011/132645
Kind Code:
A1
Abstract:
Provided is polyurethane foam made through foam molding of a foam liquid solution containing a polyol component (A), a polyisocyanate component (B), water (C), and a catalyst (D). The polyol component (A) contains 40-55 mass percent of a polyether polyol (a-1) that has a number average molecular weight of 6,000-8,000, and which has repeating units with a mole ratio of 5/95-25/75 derived from ethylene oxide and propylene oxide, and also contains 5-15 mass percent of a polyether polyol (a-2) that has a number average molecular weight of 600-2,000, and which has repeating units with a mole ratio of 0/100-20/80 derived from ethylene oxide and propylene oxide. For each 100 mass units of the polyol component (A), there are at least 2.0 mass units of water (C). Thus is provided polyurethane foam for a seat pad that achieves a balance of reduced shakiness and reduced stress relaxation, and specifically, is optimal for a vehicle seat pad.
Inventors:
YOSHITOMI, Kosuke (Yokohama Factory 1, Kashio-cho, Totsuka-ku, Yokohama-sh, Kanagawa 10, 〒2448510, JP)
Application Number:
JP2011/059555
Publication Date:
October 27, 2011
Filing Date:
April 18, 2011
Export Citation:
Assignee:
BRIDGESTONE CORPORATION (10-1, Kyobashi 1-chome Chuo-k, Tokyo 40, 〒1048340, JP)
株式会社ブリヂストン (〒40 東京都中央区京橋一丁目１０番１号 Tokyo, 〒1048340, JP)
株式会社ブリヂストン (〒40 東京都中央区京橋一丁目１０番１号 Tokyo, 〒1048340, JP)
International Classes:
C08G18/48; A47C27/14; B60N2/44
Attorney, Agent or Firm:
OHTANI, Tamotsu (OHTANI PATENT OFFICE, Bridgestone Toranomon Bldg. 6F.25-2, Toranomon 3-chom, Minato-ku Tokyo 01, 〒1050001, JP)
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Claims: