Meta-halo-phenolic alkylation products and epoxy systems

Details Meta-halo-phenolic alkylation products and epoxy systems Meta-halo-phenolic alkylation products and epoxy systems

1986-08-13

1988-03-15

Nielsen, Earl

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

Synthetic resins

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

5253333, 5253596, 525504, 525509, 528 98, 528102, 568718, 568720, 568722, 549559, 564315, C08G 5906, C08G 5908, C07C 3912

Patent

active

047314230

ABSTRACT:
Titled materials and their preparation. The materials contain a moiety such as, for example, 4-oxy-3,5-dimethyl-2,6-dibromobenzyl which can impart a high degree of thermal and hydrolytic stability to the materials, for example, epoxy thermosets such as in electronic encapsulations. For example, when used in electronic encapsulation formulations, these materials can provide a substantial increase in electronic device reliability. Their preparation involves an alkylation of an aromatic ring, for example, such as a Friedel-Crafts alkylation with 4-bromomethyl-3,5-dibromo-2,6-dimethylphenol or with 4-hydroxymethyl-3,5-dibromo-2,6-dimethylphenol.

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