Method of producing a quick-curing novolac phenolic resin using

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate

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Details

528146, 525504, C08G 6110, C08G 6114, C08G 6706, C08G 6900

Patent

active

048701548

ABSTRACT:
A method of producing a novolac phenolic resin having quick-curing properties and good fluidity is disclosed, whereby the novolac resin is prepared by reacting a phenol with an aldehyde using an acidic catalyst and thereafter adding an ammonium halide. The ammonium halide is added in amounts of about 0.05 to 3 wt % of the solid resin, and the conversion of aldehyde is not less than 90% and the water content of the resin is not less than 5%.

REFERENCES:
patent: 2636017 (1953-04-01), Schwartzberg
patent: 3619342 (1971-11-01), Burke
patent: 4433119 (1984-02-01), Brode et al.

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