Method of producing an improved polyacetal polymer

Details Method of producing an improved polyacetal polymer Method of producing an improved polyacetal polymer

1984-09-11

1985-09-10

Phynes, Lucille M.

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

Synthetic resins

Treating polymer containing material or treating a solid...

C08G 228

Patent

active

045407738

ABSTRACT:
A crude polyacetal polymer obtained by polymerization or copolymerization and having as a principal component thereof connected oxymethylene radicals in a main chain is treated in a non-soluble liquid medium at temperatures higher than 80.degree. C. but lower than the melting point of the polymer and at heterogeneous equilibrium, moving the crude polymer and the non-soluble medium in opposite directions relative to each other.

REFERENCES:
patent: 3210322 (1965-10-01), Polly et al.
patent: 3337504 (1967-08-01), Fisher
patent: 3733301 (1973-05-01), Modan
patent: 4458064 (1984-07-01), Chatterjee

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