Title:
独特の組成を有するシアネートエステル樹脂の改良された製造方法
Document Type and Number:
Japanese Patent JP3905559
Kind Code:
B2
Abstract:
A continuous process for the production of a phenolic-based cyanate ester resin is provided and includes the steps of: feeding a phenolic organic compound, a trialkylamine and a cyanogen halide into a continuous, plug-flow type reactor; causing the reactants to flow through and react in the reactor over a period of time defined as a residence time; continuously reacting the phenolic organic compound, the triallckylamine and the cyanogen halide in the reactor; and maintaining a temperature in the reactor of between about -75 DEG C. to about 0 DEG C. The reactor has a length which is equal to or greater than ten times its internal diameter. The mol equivalent concentration of the cyanogen halide is greater than the mol equivalent concentration of the trialkylamine, and the mol equivalent of the trialkylamine is greater than the mol equivalent of the phenolic organic compound. The reactants are resident for a long enough time in the reactor to achieve at least substantial conversion of the phenol groups to cyanate ester groups, but for short enough a time to substantially suppress undesirable side reactions. The phenolic-based cyanate ester resins prepared by the continuous process may contain as much as 95 percent by weight or more cyanate ester groups.
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Inventors:
Bedwell, William Bee
Raymond El, Swed
Devona, Bruce Tea
Green, george dee
Raymond El, Swed
Devona, Bruce Tea
Green, george dee
Application Number:
JP52052497A
Publication Date:
April 18, 2007
Filing Date:
November 21, 1996
Export Citation:
Assignee:
Allied Signal, Inc.
International Classes:
C08G8/28; B01J19/24; C08G73/06; C08G85/00
Domestic Patent References:
| JP5500079A | ||||
| JP51014995A | ||||
| JP7133304A | ||||
| JP7330707A | ||||
| JP4507110A |
Attorney, Agent or Firm:
Kazuo Shamoto
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita