Title:
CURING AGENT FOR POLYURETHANE COATING MATERIAL AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2005/035615
Kind Code:
A1
Abstract:
A method for producing a curing agent for polyurethane coating materials which is composed of an aliphatic diisocyanate or an aliphatic diisocyanate and a polyester polyol is characterized in that a copolymerized lactone polyol is used as the polyester polyol which lactone polyol is obtained through ring-opening copolymerization of at least two kinds of cyclic lactone compounds wherein a low-molecular-weight compound having at least two active hydrogen groups is used as an initiator. By using at least two kinds of cyclic lactone compounds, there can be obtained a curing agent for polyurethane coating materials which enables to form a coating film having high mechanical strength, especially high flexibility and impact resistance at low temperatures, and excellent gloss retention.
Inventors:
IYOSHI SHUSO (JP)
FUJII TATSUMI (JP)
FUJII TATSUMI (JP)
Application Number:
PCT/JP2004/015204
Publication Date:
April 21, 2005
Filing Date:
October 07, 2004
Export Citation:
Assignee:
DAICEL CHEM (JP)
IYOSHI SHUSO (JP)
FUJII TATSUMI (JP)
IYOSHI SHUSO (JP)
FUJII TATSUMI (JP)
International Classes:
C08G18/10; C08G18/42; C09D167/00; C09D175/04; C09D175/06; (IPC1-7): C08G18/42; C09D175/10
Foreign References:
| JPS6128518A | 1986-02-08 | |||
| JPS60197717A | 1985-10-07 | |||
| JPH0450277A | 1992-02-19 | |||
| JPH08127638A | 1996-05-21 |
Attorney, Agent or Firm:
Kuwata, Mitsuo (6th Floor, Minato Umeda Buidling, 3-17,
Nishitemma 6-chome, Kita-ku, Osaka-sh, Osaka ., JP)
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