Title:
ポリイソシアネートの製造方法
Document Type and Number:
Japanese Patent JP2004534759
Kind Code:
A
Abstract:
Catalytic oligomerization of isocyanates comprises using a catalyst consisting of a salt in which the anion is derived from a 5-membered heterocyclic compound having at least one NH group in the ring.
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Inventors:
Jürgen Köcher
Frank Richter
Hans-Joseph Lars
Matthias Wintermantel
Frank Richter
Hans-Joseph Lars
Matthias Wintermantel
Application Number:
JP2002589537A
Publication Date:
November 18, 2004
Filing Date:
May 07, 2002
Export Citation:
Assignee:
Bayer Aktiengesellschaft
International Classes:
C07D251/34; C07B61/00; C07D229/00; C07D273/04; C08G18/02; C08G18/20; C08G18/79; C08G18/80; C09D175/04; (IPC1-7): C07D229/00; C07D251/34; C07D273/04; C08G18/79
Attorney, Agent or Firm:
Aoyama Aoi
Yasuo Shibata
Kenichi Morizumi
Shigehisa Takayama
Yasuo Shibata
Kenichi Morizumi
Shigehisa Takayama