Abstract: Provided are processes for preparing compositions useful in photopolymerizable compositions, which processes comprise:A. reacting a polyether diol and an acrylic acid in about equal molar proportions; andB.1. reacting a polyether diol and an acrylic acid in about equal molar proportions and2. reacting the product of step B1, a hydroxyalkylacrylate and an organic diisocyanate in about equal molar proportions. Also provided are the products of these processes. These products are useful in photopolymerizable compositions which may typically contain, in addition to said products, N-vinyl-2-pyrrolidone and a photoinitiator.

Abstract: The invention relates to a resinous polymer sheet material having surface decorative effects of contrasting gloss and to the method of making the same. The material is made by applying to a base a printing composition layer forming a pattern with designated areas containing a photoinitiator and then applying to said printing composition layer a resinous polymer wear layer having therein an actinic radiation curable polymerizable and cross-linkable monomeric materials. The composite thus produced is exposed to actinic radiation so that the areas above where the photoinitiators were applied are cross-linked. The product is then heated to form the composition. The resulting product has a lower gloss in such areas as compared to the remainder of the surface of the sheet.

Abstract: A method of increasing the reaction rate of the polymerization and/or cross-linking of reactive polymerizable and/or cross-linkable acrylic monomeric materials initiated by dialkyl or diaralkyl peroxides as the free radical generator which comprises carrying out such a polymerization and/or cross-linking reaction in the presence of a member of the group consisting of stannous alkanoates, alkenoates, aralkanoates and aralkenoates, dialkyl tin dialkanoates, dialkenoates, diaralkanoates and diaralkenoates, or mixtures thereof in various proportions.

Abstract: Provided are processes for preparing compositions useful in photopolymerizable compositions, which processes comprise:A. reacting a polyether diol and an acrylic acid in about equal molar proportions; andB.1. reacting a polyether diol and an acrylic acid in about equal molar proportions and2. reacting the product of step B1, a hydroxyalkylacrylate and an organic diisocyanate in about equal molar proportions.Also provided are the products of these processes. These products are useful in photopolymerizable compositions which may typically contain, in addition to said products, N-vinyl-2-pyrrolidone and a photoinitiator.

Abstract: A method of making a differential gloss product which comprises: forming a foamable base resinous plastisol on a substrate; gelling the base resinous plastisol; applying to the base resinous plastisol various printing ink compositions in a predetermined pattern, some portions of which contain a blowing inhibitor and a polymerization temperature-lowering promoter, either in the same or different portions; applying to the printed base resinous plastisol a resinous wear layer containing a polymerizable and/or cross-linkable monomeric material and a free radical polymerization catalyst; gelling the wear layer; mechanically dull mat embossing the entire surface of the wear layer at a temperature below the normal decomposition temperature of the catalyst but which is sufficient to decompose the catalyst in those portions of the wear layer lying directly over the polymerization temperature-lowering promoter present in some portions of the printed pattern, whereby the polymerizable monomeric material polymerizes to b

Abstract: Prepolymers having at least one functional group capable of absorbing actinic radiation resulting in electronic excitation of the molecule, leading to free radical type cure of systems containing these prepolymers and prepolymers capable of curing by a free radical mechanism are disclosed.

Abstract: Novel photocurable compositions employing the addition of thiols to polymers having terminal vinyl-acetal functions, products prepared therefrom, and process for preparation thereof are disclosed. The cured products are films useful in coating floor tile, fabrics, and wooden articles.

Abstract: Novel C6 to C18 liquid, branched-chain, N-.alpha.-alkylacrylamides, their use as reactive diluents and dye and pigment dispersants for radiation curable compositions, and radiation curable compositions containing them are disclosed.

Abstract: Novel photocurable compositions employing the addition of thiols to polymers having terminal vinyl-acetal functions, products prepared therefrom, and process for preparation thereof are disclosed. The cured products are films useful in coating floor tile, fabrics, and wooden articles.