Air Products and Chemicals, Inc.

David A Cornforth

Walter L Renz

Stuart P Darwen

Eric Knowles

Francis M Carney

Dawn Fowler

Dawn Howell

A process is provided whereby radiation curable compositions comprising N-vinylformamide and an oligomer selected from the group consisting of epoxy-acrylate resins, polyester acrylate resins, polyurethane acrylate resins, acrylic acrylate resins, silicone acrylate resins, unsaturated polyester resins, maleate ester resins, vinyl ether resins and mixtures thereof are applied to the surface of a substrate and subsequently exposed to a radiation source until an adherent dry polymerized film is formed on the substrate. These compositions are useful for a wide range of applications including pigmented and unpigmented coatings, printing inks, adhesives and the like.

Coating process using radiation curable compositions

A two-component water-dispersible coating composition based on a blend of a water compatible polyamine-epoxy adduct and a resin compatible polyamine-epoxy adduct, and a polyepoxide resin. The water compatible polyamine-epoxy adduct is formed by reacting a polyamine having primary amine groups with a mixture of a monoepoxide and polyepoxide in which the amounts of monoepoxide and polyepoxide are such that the monoepoxide reacts with 10 to 50% of the primary amine groups and the polyepoxide reacts with 5 to 65% of the remaining primary amine groups. The resin compatible polyamine-epoxy adduct is formed by reacting a polyamine having primary amine groups with a monoepoxide or a polyepoxide in an amount which provides from about 0.4 to 1 equivalents epoxide per primary amine group. The amount of polyepoxide resin is such that there is from about 0.5 to 1.5 equivalents epoxide per active hydrogen equivalent.

Water dispersible polyamine-epoxy adduct and epoxy coating composition

Improved radiation curable compositions are provided which comprises N-vinylformamide and an oligomer selected from the group consisting of epoxy-acrylate resins, polyester acrylate resins, polyurethane acrylate resins and mixtures thereof. A photoinitiator is also added to the composition. A process is also provided whereby the composition is applied to the surface of a substrate and subsequently exposed to a radiation source until an adherent dry polymerized film is formed on the substrate. These compositions are useful as pigmented and unpigmented coatings, printing inks, adhesives and the like.

Radiation curable compositions and method of use

This invention pertains to scorch retardant systems for peroxide curable elastomers. Polyunsaturated monomers copolymerizable with the elastomer in the presence of peroxides are mixed with hydroquinone and sulfenamides and incorporated into elastomer formulations. The formulations are milled and cured. Excellent Mooney scorch times and hardness values, as well as other physical properties are obtained.

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Rochdale, United Kingdom

David A Cornforth