Title:
BLOCKED POLYISOCYANATE COMPOSITION AND ONE-PACKAGE THERMOSETTING COMPOSITION CONTAINING THE SAME
Document Type and Number:
Japanese Patent JP3712295
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a curing agent composition containing an active methylene type blocked polyisocyanate having a high heat stability and an excellent hue, a process for producing the same and a one-package thermosetting composition excellent in low-temperature curability and storage stability.
SOLUTION: This invention provides an active methylene type blocked polyisocyanate composition having a pH of 8.5 or below and obtained by reacting an active methylene compound such as diethyl malonate with a polyisocyanate in the presence of a catalyst being a basic compound (e.g. sodium methylate) and neutralizing at least part of the catalyst with an acidic compound (e.g. dibutyl phosphate) and a one-package thermosetting composition containing the above composition and a polyhydroxy compound.
Inventors:
Taketoshi Usui
Yoshiyuki Asahina
Yoshiyuki Asahina
Application Number:
JP9118296A
Publication Date:
November 02, 2005
Filing Date:
April 12, 1996
Export Citation:
Assignee:
Asahi Kasei Chemicals Corporation
International Classes:
C07C263/18; C08G18/08; C08G18/80; C08G18/34; C09D175/00; C09D175/04; (IPC1-7): C08G18/80; C07C263/18
Domestic Patent References:
| JP55082119A | ||||
| JP7258381A |
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