Process for improving the stability of etherified acetal homopol

Details Process for improving the stability of etherified acetal homopol Process for improving the stability of etherified acetal homopol

1976-12-16

1978-08-08

Phynes, Lucille M.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528132, 528134, C08G 236

Patent

active

041056388

ABSTRACT:
An etherified acetal homopolymer is stabilized by heat-treating said homopolymer suspended in a liquid diluent chosen from water or mixtures thereof with polar organic compounds, preferably in the presence of a basic compound, at a temperature of 100.degree.-160.degree. C and below the melting point of the homopolymer, thereby to substantially degrade the unstable fraction of said homopolymer.

REFERENCES:
patent: 3192182 (1965-06-01), Brown et al.
patent: 3193531 (1965-07-01), Heller
patent: 3393179 (1968-07-01), Leverett
patent: 3477993 (1969-11-01), Alsup et al.

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