Synthesis by reacting oxirane resin with carboxyl compounds

Details Synthesis by reacting oxirane resin with carboxyl compounds Synthesis by reacting oxirane resin with carboxyl compounds

1986-10-15

1988-03-22

Henderson, Christopher

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

Synthetic resins

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

4272556, 525384, C08F 834, C08F 800

Patent

active

047329459

ABSTRACT:
Disclosed is a new partial capping synthesis wherein resinous mixtures containing controlled amounts of phenolic hydroxyl and/or mercapto functionality, and aliphatic hydroxyl functionality are synthesized. Such synthesis comprises providing one or more resins which in total contain aliphatic primary and/or secondary hydroxyl functionality and oxirane functionality. A single resin or blend of resins may provide the requisite functionality. The one or more resins then are reacted with a carboxyl-functional capping agent bearing phenolic hydroxyl functionality and/or mercapto functionality. This reaction is conducted under reaction conditions and for a time such that the carboxyl functionality of the capping agent selectively reacts with the oxirane functionality of the one or more resins to produce a resinous product containing aliphatic hydroxyl functionality and containing phenolic hydroxyl functionality and/or mercapto functionality.

REFERENCES:
patent: 3694388 (1972-09-01), Connelly
patent: 3991133 (1976-11-01), Siwiec
patent: 4435545 (1984-03-01), Favie
patent: 4577007 (1986-03-01), De Bergalis

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