Epoxy resin coating with COOH-grated hydrogenated block copolyme

Details Epoxy resin coating with COOH-grated hydrogenated block copolyme Epoxy resin coating with COOH-grated hydrogenated block copolyme

1989-12-08

1994-08-30

Sellers, Robert E.

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

Synthetic resins

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

523436, 525179, 525194, 525198, 525207, C08L 3314, C08L 6302, C08L 6304

Patent

active

053428854

ABSTRACT:
A coating composition is provided from about 0.5 to about 80 parts by weight of a modified selectively hydrogenated block copolymer comprising at least one block of predominantly vinyl arene monomer units and at least one block which is, before hydrogenation, predominantly conjugated diolefin monomer units, the modified block copolymers having been modified by grafting predominantly to the conjugated diolefin block a carboxylic acid or acid derivative and 100 parts by weight of an epoxy resin. The blend of the modified block copolymer and epoxy resin is heated to above 150.degree. C. for a time sufficient for the carboxylic acid or acid derivative to form an adduct with the epoxy resin. The modified block copolymer forms a stable suspension in the epoxy after the adduct is formed which greatly enhances storage stability.

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