Method for making aromatic cyclic polyformal

C - Chemistry – Metallurgy – 07 – D

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C07D 323/00 (2006.01) C08G 4/00 (2006.01) C08G 65/40 (2006.01)

Patent

CA 1132587

RD 10370 ABSTRACT OF THE DISCLOSURE There is provided, a method for making cyclic polyformal 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 poly- formal can be used to make wire coating compositions.

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