Aqueous microgel from carboxyl latex polymer, acrylic-epoxy and

Details Aqueous microgel from carboxyl latex polymer, acrylic-epoxy and Aqueous microgel from carboxyl latex polymer, acrylic-epoxy and

1997-08-18

1999-03-02

Sellers, Robert E.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523409, 523412, C08K 320, C08L 3302, C08L 6300, C08L 6302

Patent

active

058772391

ABSTRACT:
An aqueous protective coating composition particularly useful for can coatings based on a polymeric binder comprises diepoxide crosslinked microgel particles. The microgel polymer is produced by dispersing into water a carboxyl functional acrylic-epoxy copolymer and combined with a carboxyl functional latex polymer along with a low molecular weight diepoxide, followed by coreaction and crosslinking between the carboxyl polymers and the diepoxide to form stable aqueous dispersed microgel particles. In a preferred aspect of the invention, the carboxyl latex polymer is a swollen latex polymer.

REFERENCES:
patent: 4446258 (1984-05-01), Chu et al.
patent: 4683273 (1987-07-01), Bode
patent: 5201436 (1993-04-01), Owens et al.
patent: 5508325 (1996-04-01), Craun et al.
patent: 5576360 (1996-11-01), Craun et al.

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