Title:
COLD-CURING POLYURETHANE COMPOSITION
Document Type and Number:
Japanese Patent JP3169051
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prepare a cold-curing polyurethane compsn. which is excellent in storage stability and curability, does not foam during curing, does not emit an irritant odor, and does not corrode an adherend by compounding a polyisocyanate compd. or a urethane prepolymer, an oxazolidine compd., and a compd. which accelerates the opening of an oxazolidine ring.
SOLUTION: This compsn. is prepd. by compounding a polyisocyanate compd. or a urethane prepolymer (A), an oxazolidine compd. (B), and a compd. which accelerates the opening of an oxazolidine ring (C). Component A is pref. a urethane prepolymer formed from a polyol and a polyisocyanate in an equivalent ratio of hydroxyl group to isocyanate group of lower than 1, e.g. 0.95-0.75. Component B is pref. an isocyanatooxazolidine compd. (e.g. a compd. represented by formula I). Component C, when hydrolyzed, generates a free acid, which accelerates the opening of an oxazolidine ring, an example being methyl o- formate. The compsn. may further contain a modified carbodiimide compd. (D). The compounding ratio by wt. of A:B:C:D is 100:(0.1-200:(0.1-5.0):(0.1-2.5).
Inventors:
Kimura Kazuto
Satoshi Takeda
Hiroyuki Hosoda
Kazunori Ishikawa
Hiroyuki Okuhira
Satoshi Takeda
Hiroyuki Hosoda
Kazunori Ishikawa
Hiroyuki Okuhira
Application Number:
JP33137395A
Publication Date:
May 21, 2001
Filing Date:
December 20, 1995
Export Citation:
Assignee:
Yokohama Rubber Co., Ltd.
International Classes:
C09K3/10; C08G18/08; C08G18/09; C08G18/10; C08G18/30; C08G18/38; C08G18/78; C08G18/79; C09D175/00; C09D175/04; C09J175/00; C09J175/04; (IPC1-7): C08G18/09
Domestic Patent References:
| JP5117252A | ||||
| JP2233667A | ||||
| JP5089385A | ||||
| JP5265221A |
Attorney, Agent or Firm:
Nobuto Watanabe (1 person outside)