Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1994-03-31
1994-11-08
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
053628055
ABSTRACT:
A process to produce a coating composition is provided comprising the steps of: providing 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; blending the modified block copolymer with 100 parts by weight of an epoxy resin; heating the blend of the modified block copolymer and epoxy resin to above 150.degree. C. for a time sufficient for the carboxylic acid or acid derivative to form an adduct with the epoxy resin and recovering a coating composition.
REFERENCES:
patent: 4292414 (1981-09-01), Saito et al.
patent: 4308353 (1981-12-01), Saito
patent: 4391949 (1983-07-01), St. Clair
patent: 4578429 (1986-03-01), Gergen et al.
Okorafor James O.
Sellers Robert E.
Shell Oil Company
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