Zero VOC, aqueous dispersed, polyester modified acrylic-epoxy mi

Details Zero VOC, aqueous dispersed, polyester modified acrylic-epoxy mi Zero VOC, aqueous dispersed, polyester modified acrylic-epoxy mi

1995-04-20

1996-11-19

Marquis, Melvyn I.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523400, 525119, 525438, C08K 320

Patent

active

055763618

ABSTRACT:
Protective coating compositions free of volatile organic solvents and particularly useful as can coatings are produced based on an aqueous dispersed microgel polymeric binder comprising between about 1% and 70% low molecular weight polyester diluent, between about 1% and 70% epoxy resin, between about 10% and 80% addition copolymer, and between about 1% and 40% low molecular weight diepoxide crosslinking resin. The aqueous dispersed solvent free microgel polymer is produced by mixing the polyester diluent with high molecular weight epoxy to produce a fluid resin mixture, copolymerizing in-situ ethylenically unsature monomers including carboxyl monomers in the presence of the fluid resin mixture and dispersing the resulting polymeric mixture into water. Low molecular weight diepoxide resin is added and crosslinked with carboxyl functionality to produce the microgel polymers.

REFERENCES:
patent: 5055501 (1991-10-01), Moriya et al.
patent: 5290828 (1994-03-01), Craun et al.

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