Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1987-12-02
1988-11-29
Anderson, Harold D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
525132, 528212, 528214, 528217, C08G 6544
Patent
active
047882778
ABSTRACT:
There is disclosed a novel method for producing a polyphenylene ether, in which a phenol compound is reacted with an oxidizing agent in a reaction medium in the presence of a highly active catalyst comprising at least one copper compound, at least one 1,3-diamine compound selected from N,N,N',N'-tetramethyl-1,3-diaminopropanes and at least one halogen compound selected from a bromine compound and a chlorine compound, wherein the reaction medium contains at least one alcohol selected from the group consisting of methanol and ethanol. The novel method can be advantageously employed for efficiently producing a polyphenylene ether which has a desirable color and gives a composition improved with respect to Izod impact strength in combination with a rubber-reinforced polystyrene and the like. Major application of such a composition is found in the field of generally known engineering plastics.
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Ibe Sadao
Sakurai Tokio
Takahashi Kazuhiro
Unno Yoshiro
Anderson Harold D.
Asahi Kasei Kogyo Kabushiki Kaisha
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