Production of monomeric etherified bisphenol-formaldehyde conden

Details Production of monomeric etherified bisphenol-formaldehyde conden Production of monomeric etherified bisphenol-formaldehyde conden

1980-10-08

1982-01-12

Schain, Howard E.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

204 14R, 204181C, 260 293, 528137, 528153, 568608, 568609, C08G 234, C08G 820, C08G 836

Patent

active

043106536

ABSTRACT:
A method of producing essentially monomeric etherified formaldehyde condensates with a bisphenol having a plurality of formaldehyde-reactive sites is disclosed in which the bisphenol is reacted with at least about 2 moles of formaldehyde per mole of bisphenol in solution in etherifying alcohol in the presence of an insoluble strong acid cation exchange resin. The reaction is carried out at a reaction temperature of from about 30.degree. C. to about 100.degree. C. to simultaneously provide the desired methylolation and etherification without introducing soluble ionic contaminants.

REFERENCES:
patent: 4033909 (1977-07-01), Papa
patent: 4116921 (1978-09-01), Olivo et al.
patent: 4182732 (1980-01-01), Fry
patent: 4260730 (1981-04-01), Sekmakas et al.

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