Title:
硬質ポリウレタンフォームの製造方法
Document Type and Number:
Japanese Patent JP3919824
Kind Code:
B2
Abstract:
A method for producing a rigid polyurethane foam, which comprises mixing (a) a polyisocyanate component with a polyol component comprising (b) a polyol mixture, (c) a catalyst and (d) a blowing agent, then foaming the mixture; wherein the polyisocyanate component (a) is polymethylenepolyphenyl polyisocyanate or a modified material thereof; the polyol mixture (b) comprises (b-1) a polyol which is produced by adding an alkylene oxide to an aliphatic amine and (b-2) an aromatic polyether polyol which is produced by using an aromatic amine, a Mannich base having an aromatic ring or a polyfunctional phenol as a starting material; the catalyst (c) is at least one metallic catalyst and the blowing agent (d) is an adduct of a primary or secondary amine compound with carbon dioxide. The method of the present invention is superior in initial activity and requires a small amount of raw materials.
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Inventors:
Yasuo Inazawa
Kei Kotani
Kei Kotani
Application Number:
JP53647898A
Publication Date:
May 30, 2007
Filing Date:
February 13, 1998
Export Citation:
Assignee:
Sumika Bayer Urethane Co., Ltd.
International Classes:
C08G18/48; C08G18/50; C08G18/54; C08G18/76; C08J9/12; C08L75/04
Domestic Patent References:
| JP10204143A | ||||
| JP6316621A | ||||
| JP4351620A | ||||
| JP641268A | ||||
| JP6316620A | ||||
| JP10168152A | ||||
| JP725975A | ||||
| JP959409A |
Attorney, Agent or Firm:
Aoyama Aoi
Yasuo Shibata
Yasuo Shibata