Low VOC vinylester resin and applications

Details Low VOC vinylester resin and applications Low VOC vinylester resin and applications

2005-05-31

2005-05-31

Sellers, Robert (Department: 1712)

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

Synthetic resins

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

C525S530000, C525S112000, C525S115000

Reexamination Certificate

active

06900276

ABSTRACT:
A low viscosity (and therefore low VOC) resin can be produced by limiting the molar ratio of the reactants, especially the dicarboxylic acid compound, used in the reaction. Specifically, reacting a reaction mixture comprising (i) one mole of a diepoxide having at least two glycidyl ether type epoxy groups; (ii) 0.5 to 2.0 moles of an unsaturated monocarboxylic acid; (iii) 0.1 to 0.5, preferably 0.1 to 0.3, moles of maleic anhydride; and, (iv) water, until substantially all of the epoxy groups disappear leads to the formation of a resin with a high shear (at least 500 s−1) viscosity of less than 1200 cP when measured in a 70% NVM (non-volatile matter) styrene solution. The resin may be used in barrier coatings, gel coatings, skin coatings and as a laminate resin.

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patent: 5106924 (1992-04-01), Smith et al.
patent: 1139100 (1969-01-01), None
patent: 09077843 (1997-03-01), None
patent: 2000199076 (2000-07-01), None

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