Process for continuous production of oxymethylene polymer or cop

Details Process for continuous production of oxymethylene polymer or cop Process for continuous production of oxymethylene polymer or cop

1980-05-19

1982-07-13

Phynes, Lucille M.

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

Synthetic resins

From aldehyde or derivative thereof as reactant

528241, 528242, C08G 210

Patent

active

043395694

ABSTRACT:
In a process for producing an oxymethylene homopolymer or copolymer having improved stability which comprises polymerizing trioxane or a mixture of trioxane and a cyclic ether and/or a cyclic acetal in bulk in the presence of a catalyst which is at least one compound selected from the group consisting of boron trifluoride, boron trifluoride hydrate and coordination compounds of boron trifluoride with organic compounds containing an oxygen or sulfur atom, the improvement which comprises performing the bulk polymerization without destroying the bulk polymerization system, or which comprises adding a tertiary phosphine compound to the polymerization system to deactivate the catalyst, before the polymerization system formed by the bulk polymerization is destroyed.

REFERENCES:
patent: 4087411 (1978-05-01), Sugio et al.
patent: 4115369 (1978-09-01), Sugio et al.

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