Dual-cure latex compositions

Coating processes – Direct application of electrical – magnetic – wave – or... – Polymerization of coating utilizing direct application of...

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430905, 430910, 430927, 522110, 522113, 523406, 525107, 525529, 525530, 525531, 525532, C08F 246, C08J 328, C08K 320

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active

057801177

ABSTRACT:
Radiation-curable latex compositions having a secondary curing mechanism are disclosed. In these compositions, an anionically stabilized, water-borne dispersion of one or more radiation-curable resins is combined with a low molecular weight compound having at least two reactive functional groups, wherein one reactive functional group comprises an epoxy and the other reactive functional group comprises either an epoxy or a functionality capable of self-condensation after film formation. Also disclosed is a method for providing a cross-linked protective coating on a substrate, wherein a coating of the composition of the present invention is applied to the substrate, the coated substrate is exposed to actinic radiation to effect curing, and then the unexposed or underexposed portions of the coated substrate are allowed to cure at room temperature or greater.

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Beitrage-Gesprache-Berichte, pp. 144-147 (Apr. 1993).
Radiation Curing, Science and Technology, Pappas, S.P., pp. 333-399.
Isocyanate-Free 2-Component Systems Based on a Carboxyl-Epoxy, Walz, G., Forschung und Entwicklung Polykondensate, pp. 429-449.
Ullman's Encyclopedia of Industrial Chemistry, Fifth Edition, vol. A9, 2.1.3, p. 556 (1987).

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