Title:
PRODUCTION OF POLYURETHANE FOAM
Document Type and Number:
Japanese Patent JP3755971
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing a low-density polyurethane foam having good appearance and feel and excellent in mechanical strength such as tensile strength and tear strength.
SOLUTION: This polyurethane foam is obtained by reaction between a polyisocyanate component and a polyol component followed by expansion; wherein the polyol component contains a polyester polyol which is prepared by polycondensation reaction between an acid component comprising an aromatic polybasic acid (except o-phthalic acid, phthalic anhydride, isophthalic acid and terephthalic acid) and an aliphatic polybasic acid and a polyhydric alcohol, and the polyester polyol is liquid at 40°C and has a viscosity of ≤10,000 cP at 60°C. Alternatively, this polyurethane foam is obtained by reaction between a polyol component and an isocyanate prepolymer which is prepared from a polyisocyanate component and a polyol component containing the above- mentioned polyester polyol, followed by expansion.
Inventors:
Sawai Minoru
Makoto Okubo
Masahiro Mori
Makoto Okubo
Masahiro Mori
Application Number:
JP24708197A
Publication Date:
March 15, 2006
Filing Date:
September 11, 1997
Export Citation:
Assignee:
Kao Corporation
International Classes:
C08G63/181; C08J9/02; C08G18/10; C08G18/42; C08G63/12; C08G101/00; C08L75/04; (IPC1-7): C08G63/12; C08G18/10; C08G18/42; C08J9/02; //(C08G18/42; C08G101:00); C08L75:04
Domestic Patent References:
| JP7305026A | ||||
| JP7041538A |
Attorney, Agent or Firm:
Yoshinori Hosoda