Process for the production of low molecular weight polyhydroxyl

Details Process for the production of low molecular weight polyhydroxyl Process for the production of low molecular weight polyhydroxyl

1978-08-17

1979-05-29

Evans, Joseph E.

Chemistry: electrical and wave energy

Processes and products

260594, 260602, 568863, C25B 304, C07C 4719, C07C 4917, C07C 2914

Patent

active

041566360

ABSTRACT:
Low molecular weight polyhydroxyl compounds are made from formaldehyde hydrate by an improved process comprising adjusting the pH of an aqueous solution of formaldehyde and co-catalyst to 9-12 with calcium hydroxide at 80.degree.-110.degree. C. to begin condensation and then adding to this reaction mixture aqueous formalin and/or paraformaldehyde and calcium hydroxide to maintain a pH of 7.5-9.5 and temperature of 80.degree.-110.degree. C.

REFERENCES:
patent: 2224910 (1940-12-01), Hanford et al.
patent: 2269935 (1942-01-01), Hanford et al.
patent: 2760983 (1958-08-01), MacLean et al.

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