Title:
PRODUCTION OF FLEXIBLE POLYURETHANE FOAM
Document Type and Number:
Japanese Patent JP3675023
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a flexible polyurethane foam excellent in flame retardancy and heat sealability by reacting a mixture of three specified polyols with a polyisocyanate compd. in the presence of a foaming agent, a foam stabilizer, a catalyst, or the like.
SOLUTION: This process comprises reacting a high-mol.wt. active hydrogen compd. having two or more active hydrogen groups reactive with an isocyanate group with a polyisocyanate compd. in the presence of a foaming agent, a foam stabilizer, a catalyst and other assistants. A mixture of a high-mol.wt. piperazine polyol prepd. by the ring-opening polymn. of a piperazine and an alkylene oxide, a urethane-modified or ester-modified polyether polyol, and a particulate dispersed polyol contg. fine particles of an aldehyde condensate resin as a dispersoid is used as at least part of the high-mol.wt. active hydrogen compd. and the reaction is conducted in the absence of any amine-based catalyst or in the presence of an amine-based catalyst in an amt. of less than 0.35wt.% based on the whole polyol.
Inventors:
Takayuki Sasaki
Nobuaki Toruda
Nobuaki Toruda
Application Number:
JP5964796A
Publication Date:
July 27, 2005
Filing Date:
March 15, 1996
Export Citation:
Assignee:
Asahi Glass Co., Ltd.
International Classes:
C08G18/50; C08G18/20; C08G18/54; C08G101/00; (IPC1-7): C08G18/50; C08G18/20; C08G18/54
Domestic Patent References:
| JP4031419A | ||||
| JP4279622A |
Attorney, Agent or Firm:
Sumio Tanai
Masatake Shiga
Masakazu Aoyama
Suzuki Mitsuyoshi
Noriko Yanai
Masatake Shiga
Masakazu Aoyama
Suzuki Mitsuyoshi
Noriko Yanai