Title:
SOFT POLYURETHANE FOAM AND SEAT PAD
Document Type and Number:
WIPO Patent Application WO/2017/104608
Kind Code:
A1
Abstract:
The present invention provides a soft polyurethane foam obtained by foaming and shaping a foaming stock solution comprising a polyol, a polyisocyanate, a foaming agent, and a catalyst. The polyol includes: a polyether polyol A wherein the weight-average molecular weight Mw is from 3000 to 8000 and the number of functional groups is from 3 to 4; and a polyol B that has a hydroxyl value of 100 mgKOH/g or greater and that includes C2-4 alkyleneoxy groups, wherein said alkyleneoxy groups comprise propyleneoxy groups only, or the ratio of C3 or C4 alkyleneoxy groups to ethyleneoxy groups (mass ratio) in said alkyleneoxy groups is 3 or greater. The polyisocyanate includes diphenylmethane diisocyanate.
Inventors:
YOSHITOMI KOSUKE (JP)
SEGUCHI HIDEHARU (JP)
SEGUCHI HIDEHARU (JP)
Application Number:
PCT/JP2016/086892
Publication Date:
June 22, 2017
Filing Date:
December 12, 2016
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
International Classes:
C08G18/48; A47C7/18; A47C27/14; B60N2/90; C08G18/76; C08G101/00
Foreign References:
| JP2003505570A | 2003-02-12 | |||
| JP2000290344A | 2000-10-17 | |||
| JPH09176276A | 1997-07-08 | |||
| JPH08208797A | 1996-08-13 | |||
| JPH03239716A | 1991-10-25 |
Attorney, Agent or Firm:
SHIGA Masatake et al. (JP)
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