초록 ▼

A UV and thermally curable composition comprising (1) a liquid, ethylenically unsaturated monomer, oligomer or prepolymer of the formula: [Figure] wherein R is H or CH3, R1 is an organic moiety and n is at least 2, (2) a thermal initiator for (1) selected from the group consisting of substituted or

A UV and thermally curable composition comprising (1) a liquid, ethylenically unsaturated monomer, oligomer or prepolymer of the formula: [Figure] wherein R is H or CH3, R1 is an organic moiety and n is at least 2, (2) a thermal initiator for (1) selected from the group consisting of substituted or unsubstituted pinacols, azo compounds, thiurams, organic peroxides and mixtures thereof, (3) a photoinitiator for (1) selected from the group consisting of aldehyde and ketone carbonyl compounds having at least one aromatic nucleus attached directly to the [Figure] group, benzoin alkyl ethers, diethoxyacetophenone and 2,2-dimethoxy-2-phenylacetophenone, (4) a thermoplastic material, and (5) a non-polymerizable plasticizer for (4). The exposure of the composition to UV radiation under atmospheric conditions and heat in seriatim results in a cured solid product which can be utilized as adhesives, coatings, gaskets, sealants, resists and the like.

대표청구항 ▼

A process for adhering two substrates which consists of applying to at least one of said substrates an adhesive composition consisting essentially of (1) a liquid, ethylenically unsaturated monomer, oligomer or prepolymer of the formula: [Figure] wherein R is H or CH3, R1 is an organic moiety and n

A process for adhering two substrates which consists of applying to at least one of said substrates an adhesive composition consisting essentially of (1) a liquid, ethylenically unsaturated monomer, oligomer or prepolymer of the formula: [Figure] wherein R is H or CH3, R1 is an organic moiety and n is at least 2, (2) a thermal initiator for (1) selected from the group consisting of azo compounds, thiurams, organic peroxides and mixtures thereof, (3) a photoinitiator for (1) selected from the group consisting of aldehyde and ketone carbonyl compounds having at least one aromatic nucleus attached directly to the [Figure] group, benzoin alkyl ethers, diethoxyacetophenone and 2,2-dimethoxy-2-phenylacetophenone, (4) a thermoplastic material, and (5) a non-polymerizable plasticizer for (4), exposing said composition in air to UV radiation having an intensity in the range 0.0004 to 60.0 watts/cm2 in the 200-400 nanometer region for a time sufficient to partially cure the adhesive in situ, contacting the substrates with the partially cured adhesive therebetween and, thereafter, heating the composition to a temperature in the range 80°-200°C. for a time sufficient to obtain a fully cured solid adhesive.