Process for preparing a stabilized oxymethylene copolymer

Details Process for preparing a stabilized oxymethylene copolymer Process for preparing a stabilized oxymethylene copolymer

1975-02-20

1977-05-17

Phynes, Lucille M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 459P, 260 67FP, 260 4585T, C08G 232, C08G 210

Patent

active

040241050

ABSTRACT:
Oxymethylene copolymer having heat and hydrolysis resistant terminal groups is prepared by heating the polymers present in a liquid phase, whereby a thermal degradation of the unstable terminal groups takes place. The degradation is advantageously effected in the presence of a calcium or magnesium salt of an aliphatic carboxylic acid of low molecular weight. The oxymethylene copolymers are suitable as engineering plastic for preparing semi-finished products and finished products.

REFERENCES:
patent: 3219623 (1965-11-01), Berardinelli
patent: 3340219 (1967-09-01), Stemmler
patent: 3484400 (1969-12-01), Haley
patent: 3505292 (1970-04-01), Smith et al.
patent: 3524832 (1970-08-01), Green
patent: 3626024 (1971-12-01), Gutweiler et al.
patent: 3699062 (1972-10-01), Starr et al.

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