Rubber compounding resorcinolic resins and process for making th

Details Rubber compounding resorcinolic resins and process for making th Rubber compounding resorcinolic resins and process for making th

1989-12-19

1991-07-09

Jacobs, Lewis T.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525135, 525139, 525140, C08L 6106

Patent

active

050306928

ABSTRACT:
Low fuming and less hygroscopic rubber compounding cashew nut shell liquid, allylphenol and alkylphenol modified resorcinolic novolak resins are made by condensing (A) a resol prepared by first reacting at least one monovalent phenol having the general formula (a) ##STR1## wherein R.sub.1 may be selected from the group consisting of hydrogen, an allyl, an alkyl of 1 to about 20 carbon atoms and an aryl having about 6 to about 12 carbon atoms, with methylformcel and/or furfural in the presence of an alkaline catalyst, or optionally reacting at least one monovalent phenol of the above-mentioned general formula (a) and cashew nut shell liquid, with methylformcel and/or furfural in the presence of an alkaline catalyst; and then (B) reacting the product of Step (A) with at least one of the compounds having the general formula (b) ##STR2## wherein R.sub.2 and R.sub.3 may be the same or different radicals selected from the group consisting of --H, --OH, --NH.sub.2, an allyl and an alkyl having 1 to about 20 carbon atoms.

REFERENCES:
patent: 4150194 (1979-04-01), Watts et al.
patent: 4167540 (1979-09-01), Giller et al.
patent: 4257926 (1981-03-01), Tanimura et al.
patent: 4310653 (1982-01-01), Krajewkie et al.
patent: 4317896 (1982-03-01), Holik

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