Synthesis of polyformals

Details Synthesis of polyformals Synthesis of polyformals

1979-07-03

1981-07-07

Lone, Werren B.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

568445, 568497, C07D31700, C07C 4330

Patent

active

042774020

ABSTRACT:
Formals of CH.sub.2 OH(CHOH).sub.n CH.sub.2 OH polyols (n=2 to 4) are prepared in less than 15 minutes by heating to about 125.degree. C., a mixture of e.g. sorbitol and paraformaldehyde in slight excess (5 to 10%), in the presence of e.g. sulfuric acid in catalytic quantities. Elution with methanol and filtration yield the pure solid cyclic triformal. The process can be carried in stages, using almost stoichiometric quantities of paraformaldehyde, but without any change in overall heating time.

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Schultz, "Ber.", vol. 27, p. 1892 + (1894).
Tollens "Ann.", vol. 289, p. 20 (1896).

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