Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1977-12-29
1980-04-01
Lee, Lester L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528212, 528216, 528217, C08G 6544
Patent
active
041962788
ABSTRACT:
A novel process is described for the control of molecular weight in the preparation of polyphenylene oxide polymers. The process is based on the slow addition of additional amounts of a monomeric phenol to a polyphenylene oxide polymerization reaction mixture which comprises a main charge of a monomeric phenol, a polyphenylene oxide polymerization catalyst and a solvent, while continuing polymerization.
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Bennett, Jr. James G.
Cooper Glenn D.
General Electric Company
Lee Lester L.
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