Title:
ポリウレタンフォームの製造方法
Document Type and Number:
Japanese Patent JP6978397
Kind Code:
B2
Abstract:
To provide a method for producing a polyurethane foam capable of advantageously forming a polyurethane foam having excellent flame retardancy and a uniform density distribution.SOLUTION: In producing a polyurethane foam by mixing and reacting a composition A mainly composed of a polyol and a composition B mainly composed of a polyisocyanate, followed by foaming and curing, the objective polyurethane foam is produced by 1) incorporating an alkali metal carboxylate catalyst and/or a quaternary ammonium salt catalyst into the composition A, 2) incorporating a foaming agent composed of red phosphorus into the composition A and/or the composition B, and 3) in the production site of the polyurethane foam, adding a foaming agent I composed of critical, subcritical or liquid carbon dioxide to the composition A and/or the composition B, followed by immediately proceeding the reaction.SELECTED DRAWING: None
Inventors:
Hiroyuki Seki
Application Number:
JP2018207568A
Publication Date:
December 08, 2021
Filing Date:
November 02, 2018
Export Citation:
Assignee:
Asahi Organic Material Co., Ltd.
International Classes:
C08G18/00; C08G18/08; C08G18/16; C08K3/02; C08L75/04
Domestic Patent References:
| JP2016188330A | ||||
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Foreign References:
| US20140221518 |
Attorney, Agent or Firm:
Michio Nakajima
Masahiro Nakashima
Masahiro Nakashima
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