Abstract: Vinylidene fluoride polymer resin dispersed in carbon tetrachloride is chlorinated at elevated temperature in the presence of a specified initiator compound and triethanolamine and with exposure 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 a polycarbonate 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: Polymeric blends having structural integrity at unobviously high temperature and an improved balance of properties are prepared by intimately mixing certain selectively hydrogenated block copolymers with certain thermoplastic saturated polyesters under conditions where at least partial continuous networks which interlock are formed.

Abstract: A process for hardening (I) a resin which is the reaction Product of a first reaction of a) an epoxy resin which contains at least two epoxy groups with b) an olefinically unsaturated monocarboxylic acid followed by a reaction with c) a carboxylic groups containing component; by copolymerizing said resin (I) with (II) a copolymerizable unsaturated monomer under the action of irradiation of an electron beam, one polycarboxylic acid unit of said carboxylic groups containing component being attached to at least two molecules of the epoxy resin the number of epoxy groups being approximately equal to the sum of the number of free carboxylic groups and the number of anhydride groups, the proportion being 1.25 to 1.5 equivalents of epoxyde per equivalent of unsaturated monocarboxylic acid and about 0.25 to 0.5 mol of carboxylic groups containing compound. The radiation dose may be as low as 0.25 Mrad/g resin. Shaped body which is obtained by the process and which may be a film, fibre or a coating.

Abstract: A radiation curable vehicle for coating and printing ink compositions consist essentially of the reaction product of a polyepoxide, a saturated dicarboxylic acid, an ethylenically unsaturated monocarboxylic acid and optionally a saturated monocarboxylic acid.

Abstract: A dental restorative composition and tooth coating comprising the combination of an adhesive resin of the oligomeric BIS-GMA type, a low molecular weight reactive extender or diluent acrylate, an organic peroxide catalyst or free radical initiator and, as a photosensitizer, Michler's ketone.

Abstract: Novel diacrylates are prepared by reacting a monohydroxylated acrylic monomer with a polyisocyanate. The reaction product may be polymerized by subjecting to ionizing irradiation, actinic light or to free radical catalysis to form a useful coating material. The diacrylates may also be copolymerized with other radiation sensitive materials.

Abstract: This invention relates to foamable, thermoplastic polyester molding compositions, to molded products suitable for structural applications and to a process for their manufacture. The resin compositions when foamed have a cellular interior and a skin having structural strength.

Abstract: A process which improves the handleability of resilient, acrylic graft rubber particles which comprises coagulating the rubber particles, then contacting the coagulated particles in the coagulation medium with a dispersion of a non-resilient alkyl methacrylate resin and coagulating the alkyl methacrylate resin on the surface of the rubber particles. The particles of alkyl methacrylate resin adhere to the rubber particles and prevent the normally sticky rubber particles from adhering to one another.

Abstract: A hot melt adhesive composition suitable for adhering polyester and polyvinyl fluoride compositions is prepared by making a blend of about 9 to 30 percent of a copolymer of ethylene and ethyl acrylate or methacrylate, about 40 to 45 percent of a copolyester of a terephthalate of ethylene and neopentyl glycol and about 50 to 55 percent of a terpolyester obtained by condensing ethylene glycol with a mixture of terephthalic acid, isophthalic acid and azelaic acid.

Abstract: Polymeric blends having excellent dimensional stability and an improved balance of properties are prepared by intimately mixing certain selectively hydrogenated block copolymers with certain halogenated thermoplastics thereby forming at least partial continuous networks which interlock.

Abstract: There is disclosed a process for preparing chemically modified olefin polymers or copolymers which comprises exposure to ultraviolet or visible radiation of a mixture containing a polymer, a sensitizer, and a co-reactant having a structure containing both a saturate aliphatic hydrocarbon residue and at least one highly polar functional group.

Abstract: A curable coating composition contains a polymer having pendant mercaptan groups and a bis-maleimide cross-linking agent. The mercaptan groups of the polymer cross-link with the bis-maleimide upon curing to form a fully cured coating. In a preferred embodiment, the coating composition serves as a cathodic electrocoating composition.

Abstract: Improved radiation vulcanization of elastomers is accomplished by incorporating into the elastomer composition a polythiol. The polythiol is preferably a hydrocarbon thioether thiol and is normally liquid at room temperature with a molecular weight of at least 150. Though difunctional polythiols are operative in this invention, the preferred polythiols have about three to about five thiol groups per molecule.

Abstract: A multicomponent polymer blend composition is prepared by intimately mixing a thermoplastic polyester, 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 method of repairing teeth which comprises applying to the teeth a composition comprising (a) an inert, translucent, inorganic particulate filler (b) a polymerizable material comprising a polymerizable prepolymer containing at least two polymerizable ethylenically unsaturated groups and being the reaction product of a urethane prepolymer and a polymerizable ethylenically unsaturated monomer reactive with the urethane prepolymer; the urethane prepolymer being the reaction product of a diisocyanate and a diol; up to 100% by weight of the polymerizable prepolymer of a liquid ethylenically unsaturated monomer which is copolymerizable with the polymerizable prepolymer; and from 0.01 to 10% by weight of the polymerizable material of a photosensitive catalyst capable of curing the composition on exposure to visible light and comprising a photosensitizer selected from fluorenone and an .alpha.-diketone of the formula A.CO.CO.

Abstract: A multicomponent polymer blend composition is prepared by intimately mixing a polysulfone, 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 polycarbonates thereby forming at least partial continuous networks which interlock.

Abstract: Monoketals of esters and amides of aromatic .alpha.,.beta.-dioxocarboxylic acids having the formulaR -- CO -- C(OR.sub.1)(OR.sub.2) -- COX].sub.mwherein m is 1 or 2, R is a mono- or divalent aromatic residue, R.sub.1 and R.sub.2 are monovalent organic residues and X is an alkoxy or amino groups, are photoinitiators for the UV-curing of resins. Examples for such resins are acrylates, methacrylates or unsaturated polyesters. The most important application for such photochemical curing is the field of coatings and printing inks.

Abstract: The gel time of unsaturated polyester thermosetting resins containing polymerizable vinyl monomers, such a styrene, and a vinylphosphonate flame retardant, such as the bis(hydrocarbyl)vinylphosphonates, which normally retards the gel time of such resins, is reduced by the addition of an effective amount for gel time reduction of maleic anhydride.