US 2003/0153718 A1 · Low VOC vinylester resin and applications

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.

Claims66

Dependent claims

A resin comprising monomers and oligomers of Formula I

R—[—Ep′—MA′—]n—Ep′—R (I)
where R is, each occurrence, a carboxyl radical, Ep′ is a diepoxy residual group, MA′ is a maleic acid carboxyl residual group, n is a non-negative integer, wherein at least about 50 mole percent of the monomers and oligomers are linear and have a value for n of 0 or 1.

Dependencies are inferred from the claim text.

Low VOC vinylester resin and applications

Life of this patent

Low VOC vinylester resin and applications

Life of this patent

Abstract

Claims66