Method for making aromatic cyclic polyformal

Details Method for making aromatic cyclic polyformal Method for making aromatic cyclic polyformal

1978-05-15

1979-08-07

Lee, Lester L.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528126, 528128, 528174, 528219, C08G 6540

Patent

active

041638336

ABSTRACT:
There is provided, a method for making cyclic poly-formal substantially free of linear polyformal by agitating a plural phase mixture of an aqueous alkali metal salt solution of bisphenol in contact with methylene halide and a phase transfer catalyst. The cyclic polyformal can be used to make wire coating compositions.

REFERENCES:
patent: 3069386 (1962-12-01), Barclay, Jr.

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