Carboxyl-functional adduct from oh- or epoxy-functional polymer

Details Carboxyl-functional adduct from oh- or epoxy-functional polymer Carboxyl-functional adduct from oh- or epoxy-functional polymer

1998-09-02

2000-07-04

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...

525117, 525176, 525207, 5253273, 5253288, 525440, 525528, 525533, C08L 3314, C08L 6302, C08L 6700, C08L 7516

Patent

active

060840366

ABSTRACT:
Coating compositions comprising (a) a carboxyl functional adduct which is the reaction product of (i) a compound, polymer or oligomer containing pendant and/or terminal hydroxyl or epoxy functional groups and (ii) citric acid or citric acid anhydride; and (b) an anhydride functional curing agent are disclosed. The coating compositions have accelerated tack-free times and enhanced adhesion to zinc-coated steel substrates without the use of a chrome-containing wash primer.

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