Process of forming heterocyclic-coupled block polymers of polyph

Details Process of forming heterocyclic-coupled block polymers of polyph Process of forming heterocyclic-coupled block polymers of polyph

1977-06-20

1979-05-29

Lee, Lester L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528212, 528214, 528215, C08G 6544, C08G 6548

Patent

active

041567714

ABSTRACT:
A process of forming heterocyclic-coupled linear, branched and/or cross-linked polymers of polyphenylene oxides is described which comprises contacting heterocyclic halides with (a) polyphenylene oxides having an average hydroxyl group per molecule value greater than zero including 1.0 or less, or (b) quinone-coupled polyphenylene oxides having an average hydroxyl group per molecule value greater than zero including 2.0 or less, including mixtures of (a) and (b).

REFERENCES:
patent: 3297639 (1967-01-01), Picklesimer et al.
patent: 3733302 (1973-05-01), Klebe et al.
patent: 3753946 (1973-08-01), Holub et al.
patent: 3773718 (1973-11-01), Klebe et al.
patent: 3978028 (1976-08-01), Sundermann et al.

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