The Dow Chemical Company

Virginia B Messick

Robert E Hefner, Jr

Dwight K Hoffman

Michael G Stevens

Vinylized epoxy resins, such as vinyl ester resins, comprise polymerizable ethylenic unsaturation and an in situ polymerized polymer, such as a polyalkyl acrylate. The vinylized epoxy resins can form stable dispersions and are useful in thermoset applications.

Polymer-modified vinylized epoxy resins

Polymer modified vinyl ester resin compositions are disclosed which comprise (I) a polymer modified epoxy resin which comprises (A) an epoxy resin wherein a portion of the epoxide groups have been reacted to provide groups containing polymerizable ethylenic unsaturation; (B) at least one vinyl terminated urethane oligomer and optionally (C) at least one polymerizable ethylenically unsaturated compound and (II) a monounsaturated monocarboxylic acid or mixture of such acids.

Polymer modified vinyl ester resin compositions

Polymer modified epoxy resin compositions are disclosed which comprise (A) an epoxy resin wherein a portion of the epoxide groups have been reacted to provide groups containing polymerizable ethylenic unsaturation; (B) at least one vinyl terminated urethane oligomer and optionally (C) at least one polymerizable ethylenically unsaturated compound. These compositions are useful as intermediates to novel polymer modified vinyl esters and thermoset (cured) products.

Polymer modified epoxy resin compositions

Oxalic acid, alone or in combination with phenothiazine or with phenothiazine and 4-chloro-2-nitrophenol, increases the storage life of vinyl ester resins or unsaturated polyesters without adversely suppressing the exotherm or affecting their curability.

Oxalic acid stabilized thermosettable vinyl ester resins

Nitric acid, alone or in combination with phenothiazine, increases the storage life of vinyl ester resins or unsaturated polyesters without adversely suppressing the exotherm or affecting their curability.

Growing community of inventors

Lake Jackson, TX, United States of America

Virginia B Messick