Title:
POLYCARBONATE POLYOL AND PROCESS FOR PRODUCTION THEREOF
Document Type and Number:
WIPO Patent Application WO/2007/108198
Kind Code:
A1
Abstract:
Polyurethane moldings produced by using as a raw material a polycarbonate polyol prepared by using 3-methyl-1,5-pentane- diol as the main glycol component have improved surface properties. The polycarbonate polyol has a 4-methyltetrahydropyran content of 0.15% by mass or below. The polycarbonate polyol is produced by using a sodium alcoholate represented by the general formula: R-O-Na (wherein R is a hydrocarbon group having 4 or less carbon atoms) as the transesterification catalyst.
Inventors:
NAKAMURA KOUICHIROU (JP)
AKIMOTO MAMORU (JP)
KOBAYASHI TOSHIHIDE (JP)
AKIMOTO MAMORU (JP)
KOBAYASHI TOSHIHIDE (JP)
Application Number:
PCT/JP2007/000038
Publication Date:
September 27, 2007
Filing Date:
January 29, 2007
Export Citation:
Assignee:
NIPPON POLYURETHANE KOGYO KK (JP)
NAKAMURA KOUICHIROU (JP)
AKIMOTO MAMORU (JP)
KOBAYASHI TOSHIHIDE (JP)
NAKAMURA KOUICHIROU (JP)
AKIMOTO MAMORU (JP)
KOBAYASHI TOSHIHIDE (JP)
International Classes:
C08G64/30
Domestic Patent References:
| WO2001090213A1 | 2001-11-29 |
Foreign References:
| JPH05255680A | 1993-10-05 | |||
| JP2000351843A | 2000-12-19 | |||
| JP2003246852A | 2003-09-05 | |||
| JP2003113237A | 2003-04-18 | |||
| JPH11116668A | 1999-04-27 |
Attorney, Agent or Firm:
UCHIDA, Masaru (24-18 Kamiogi 1-chom, Suginami-ku Tokyo 43, JP)
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