Title:
ポリウレタンフォームの製造方法
Document Type and Number:
Japanese Patent JP2009530458
Kind Code:
A
Abstract:
Process for preparing a polyurethane foam, according to the free rise process, the foam having a free rise density of 5-40 kg/m3, comprising reacting at an index of 40-80 a polyisocyanate composition consisting of diphenylmethane diisocyanate and of homologues of diphenylmethane diisocyanate, said homologues having an isocyanate functionality of 3 or more, and wherein the polyisocyanate composition has an average isocyanate functionality of 2.10-2.40 and a 2,4'-diphenylmethane diisocyanate content of 6-45% by weight with the proviso that the relationship between this functionality (F) and content (C) is: -123F+287@C@-123F+311, and a polyoxyethylene polyoxypropylene polyol (polyol b1) having an oxyethylene content of 5-30% by weight, a nominal functionality of 2-4 and an average equivalent weight of 1000-3000, and comprising using 5-20 parts by weight, per 100 parts by weight of polyol b1, of water as blowing agent, an effective amount of a catalyst enhancing urethane formation, and an effective amount of a surfactant. Foams are claimed as well. The foams show good sound absorption and/or sound insulation.
Inventors:
Bertels, Philip
Ellen, Rough
Van Esse, Ryu
Ellen, Rough
Van Esse, Ryu
Application Number:
JP2009500800A
Publication Date:
August 27, 2009
Filing Date:
February 22, 2007
Export Citation:
Assignee:
Huntsman International LLC
International Classes:
C08G18/00; C08G18/48; C08G18/76
Domestic Patent References:
| JPH05320308A | 1993-12-03 |
Attorney, Agent or Firm:
Shinjiro Ono
Kazuo Shamoto
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Mitsutoshi Nakamura
Kazuo Shamoto
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Mitsutoshi Nakamura