Abstract: A multicomponent polymer blend composition is prepared by intimately mixing a polyurethane, a selectively hydrogenated monoalkenyl arene-diene block copolymer, and at least one dissimilar engineering thermoplastic resin under such conditions that at least two of the polymers form at least partial continuous network phases which interlock with the other polymer networks and therefore results in a desirable balance of properties.

Abstract: Disclosed is a composition comprised of an admixture of poly(tetramethylene terephthalate), bisphenol A polycarbonate and selected phosphorous compounds.

Abstract: Linear copolymers of glycidol, glycidyl esters of unsaturated fatty acids and, optionally, alkylene oxides, are made by the reaction of an unsaturated fatty acid with a polymer or copolymer of tert.-butyl glycidyl ether in the presence of an acid catalyst. The products are polymerizable and copolymerizable with vinyl monomers and are useful as curable resins.

Abstract: Blends of the thermoplastic polymers and a multiphase acrylic composite polymer comprising (A) a first non-crosslinked phase of molecular weight of about 7,500 to 50,000 polymerized from a first monomer emulsion or solution of at least 25 weight percent of at least one alkyl acrylate, wherein said alkyl group has 1 to 18 carbon atoms, 0 to 75 weight percent of another acrylic monomer and 0 to 75 weight percent of another copolymerizable ethylenically unsaturated monomer, and (B) a final rigid thermoplastic phase polymerized in the presence of the first phase from an emulsion or solution of about 35 to 100 weight percent of at least one monomer which is a methacrylate, acrylate, styrene or substituted styrene, 0 to 60 weight percent of another acrylic monomer, and 0 to 65 weight percent of another copolymerizable ethylenically unsaturated monomer, wherein the rigid thermoplastic phase has a molecular weight of from about 400,000 to about 5 .times. 10.sup.6.

Abstract: A molding composition of improved toughness, thermal stability, flow and stress craze resistance comprising (A) from about 70 to about 95% of a resinous terpolymer of 65 to 75 parts of methylmethacrylate, 18 to 24 parts of styrene and 2 to 12 parts of ethylacrylate and (B) 5% to 30% of polybutadiene grafted with 17 to 22 parts of methylmethacrylate, 4 to 7 parts of styrene and 0 to 3 parts of ethylacrylate, the ratio of polybutadiene to monomer in (B) ranging from 1:1 to 4:1, respectively.

Abstract: This invention is directed to polyenes derived from hydantoin acids, amines and esters. The polyene is typically a reaction product of a hydantoin amine, e.g., N,N'-bis(3-aminopropyl)-dimethylhydantoin, a diisocyanate and an unsaturated ether, e.g., trimethylolpropane diallyl ether. Upon exposure to a free radical generator, e. g., actinic radiation, in combination with a polythiol, this polyene cures to a solid, insoluble, chemically resistant, crosslinked polythioether product having excellent heat stability.

Abstract: Isocyanate-modified compounds consisting of the reaction products of an organic isocyanate with compounds with multiple acrylic radicals, the average composition of which has the general formula:X--Y--(Z).sub.m-p-1 ].sub.nwhereinX is the radical derived by removing the OH groups from the carboxyl groups of an organic carboxylic acid containing n COOH groups and the number of carbon atoms of which is between 14 and 90,Y is the radical derived by removing m-p hydrogen atoms from the hydroxyl groups of an organic compound containing m OH groups,Z is the monovalent radical derived by removing the OH group from the carboxyl group of a monocarboxylic acid having at least one terminal CH.sub.2 .dbd.CH--COO-- radical,n is a whole number from 1 to 6,m is a whole number from 2 to 8, andp is a number of from 0 to 2.

Abstract: Ultraviolet light-curable adhesive compositions are prepared from diacrylate hydantoin compounds, a photoinitiator and a silane. The adhesives are useful for bonding substrates, one of which is transparent to ultraviolet light.

Abstract: A multicomponent polymer blend composition is prepared by intimately mixing a polyolefin, a selectively hydrogenated monoalkenyl arene-diene block copolymer, and at least one dissimilar engineering thermoplastic resin under such conditions that at least two of the polymers form at least partial continuous network phases which interlock with the other polymer networks and therefore results in a desirable balance of properties.

Abstract: A multicomponent polymer blend composition is prepared by intimately mixing a polyacetal, a selectively hydrogenated monoalkenyl arene-diene block copolymer, and at least one dissimilar engineering thermoplastic resin under such conditions that at least two of the polymers form at least partial continuous network phases which interlock with the other polymer networks and therefore results in a desirable balance of properties. These blends have an unobviously high heat distortion temperature relative to the improved impact strength.

Abstract: A photopolymerizable composition comprising photopolymerizable ethylenically unsaturated compounds and, as the photoinitiator, a benzoyl benzoate having the formula: ##STR1## wherein X is OR, NHR or NRR; R is an independently selected hydrocarbon of 1 to 30 carbon atoms, alkoxysubstituted alkyl of 2 to 12 carbon atoms or aminosubstituted alkyl of 2 to 12 carbon atoms; R' is an independently selected halogen or X; and n and m are independently selected integers from 0 to 3.

Abstract: A multicomponent polymer blend composition is prepared by intimately mixing a halogenated thermoplastic, a selectively hydrogenated monoalkenyl arene-diene block copolymer, and at least one dissimilar engineering thermoplastic resin under such conditions that at least two of the polymers form at least partial continuous network phases which interlock with the other polymer networks and therefore results in a desirable balance of properties. These blends have an unobviously high heat distortion temperature relative to the improved impact strength.

Abstract: Polymeric blends having an unobviously high structural integrity and an improved balance of properties are prepared by intimately mixing certain selectively hydrogenated block copolymers with polyaryl polyethers and aromatic polysulfones thereby forming at least partial continuous networks which interlock.

Abstract: This invention relates to 3,4-bis(halomethyl) benzophenone photoinitiators and these initiators admixed with unsaturated photopolymerizable compounds. When such compositions are irradiated by ultraviolet light, the benzophenone derivatives split off free radicals which initiate the photopolymerization of the unsaturated photopolymerizable compounds.

Abstract: Polymeric blends having an unobviously high structural integrity and an improved balance of properties are prepared by intimately mixing certain selectively hydrogenated block copolymers with certain acetal resins thereby forming at least partial continuous networks which interlock.

Abstract: Polymeric blends having excellent dimensional stability and an improved balance of properties are prepared by intimately mixing certain selectively hydrogenated block copolymers with polymers and copolymers of 4-methyl-1-pentene under conditions where at least partial continuous networks which interlock are formed.

Abstract: Polymer blends having high impact resistance after mechanical working are produced by blending together a non-elastomeric monovinylidene aromatic polymer such as polystyrene with an elastomeric copolymer, such as a block copolymer of styrene and butadiene, in the form of crosslinked, colloidal size particles.

Abstract: Crosslinking, e.g., by irradiation, of a polymer comprising poly(tetramethyleneterephthalate) is made possible by the addition of a member selected from the group consisting of triallyl cyanurate and N,N'-m-phenylenedimaleimide. The resulting crosslinked modified polymer may be rendered heat recoverable.

Abstract: A contact lens is made from a polymer hydrogel by photopolymerizing a hydroxyalkyl acrylate or methacrylate in the absence of a cross-linking agent. The polymer hydrogel can also be formed by photopolymerization carried out in the presence of a catalyst responsive to short-wave light. Heat can also be used in combination with the photopolymerization to assist in formation of the polymer hydrogel contact lens.

Abstract: Method for producing polymers comprises connecting polymeric molecules at least one of which contains tertiary amino groups chemically bound in the chain in the presence of materials such as elemental halogens, compounds of the elements of groups 3 through 8 of the Periodic Table containing one or more halogen atoms or halogen containing organic compounds. It is possible to connect chains of identical or different types and in this way increase the molecular weight, produce block copolymers, cure films and varnishes and perform vulcanization and the like at ambient temperature.