Title:
低モノマーポリウレタンプレポリマー
Document Type and Number:
Japanese Patent JP4536163
Kind Code:
B2
Abstract:
A low-monomer PU prepolymer containing free NCO groups which is obtained from polyhydric alcohols and diisocyanates differing in their reactivity and which is distinguished by the ratio of the NCO groups of the partly slower-reacting diisocyanate to the NCO groups of the faster-reacting diisocyanate. It is greater than 6:1. Nevertheless the prepolymer according to the invention cures more quickly than a known prepolymer predominantly containing fast-reacting NCO groups. In a preferred embodiment, TDI is used as the partly slower-reacting diisocyanate while MDI is used as the faster-reacting diisocyanate. The prepolymer is produced in two stages. The prepolymer according to the invention is suitable for bonding plastic articles, metals and paper, especially films. The accelerated absence of migration is particularly noticeable in this regard.
Inventors:
Volte, Gerd
Henke, Gunther
Crudenscheid, Marx
Omorui, A Street
Henke, Gunther
Crudenscheid, Marx
Omorui, A Street
Application Number:
JP52958398A
Publication Date:
September 01, 2010
Filing Date:
December 18, 1997
Export Citation:
Assignee:
Henkel AG & Co. KGaA
International Classes:
C08G18/10; B32B7/12; C08G18/72; C08G18/76; C09D5/00; C09D175/04; C09J175/04
Domestic Patent References:
| JP60161416A |
Attorney, Agent or Firm:
Mitsuo Tanaka
Takuji Yamada
Yasuo Shibata
Kenichi Morizumi
Takuji Yamada
Yasuo Shibata
Kenichi Morizumi