Abstract: Radiation curable coating compositions for providing solvent-resistant abhesive coatings comprise polyfluorinated acrylates and methacrylates, polyethylenically unsaturated crosslinking agents and a film-forming organic polymer. The compositions can be used after radiation curing to render substrates oil, soil, and water repellent. The cured compositions have particular use as release coatings in image transfer systems wherein a fused xerographic image is transferred from the release coated surface, to another surface due to the particular characteristics of the coatings. Novel poly(fluorooxyalkylene)urethane acrylate compounds are also disclosed.

Abstract: A conjugated diene copolymer comprising (A) 40 to 90 mole % of a conjugated diene component, (B) 0.5 to 10 mole % of an alpha,beta-ethylenically unsaturated carboxylic acid component, (C) 0.1 to 5 mole % of a polyfunctional alkenyl compound component and (D) 5 to 58 mole % of a monoolefinically unsaturated compound component wherein the intrinsic viscosity [.eta.] of the copolymer as measured at 30.degree. C. in dimethylformamide is 0.01 to 3.0 dl/g, the width (.DELTA.Tg) of the endothermic transition temperature section determined by a differential scanning calorimetry is 45.degree. to 120.degree. C., and the limit temperature (T.sub.1) on the lower temperature side of the endothermic transition temperature section is -40.degree. C. or less.

Abstract: A method is provided for coating a substrate with a non-toxic irradiation curable epoxy resin composition. There is used an alkoxy-substituted aryl onium salt, in combination with a non-toxic oxirane-containing organic or silicone resin.

Abstract: A molding of modified polyphenylene oxide resin comprises a composite of modified polyphenylene oxide containing polyphenylene oxide having structure expressed in the following general formula (I) as a basic skeleton, which resin composite preferably contains a cross linking agent, more preferably phosphoric ester serving as a cross linking agent, while the molding is cross-linked by irradiation to ionizing radiation: ##STR1## where R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represents univalent substituents selected from a group of hydrogen, alkyl group, halogen, alkoxyl group and haloalkoxyl group, and n represents a natural number.

Abstract: Epoxy functional organopolysiloxanes are compatibilized with onium salt photocatalysts by modifying a controlled number of epoxy groups by esterification with carboxylic acids.

Abstract: Photopolymerizable compositions, based on 2-methoxytetrahydropyran and 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexane carboxylate, which can be applied as coatings on substrates and photocured at high speeds.

Abstract: A photo-curable epoxy resin type composition which comprises (a) an epoxy resin, (b) at least one compound selected from the group consisting of (i) a compound having a group, other than an imido group, which is represented by the formula --CONH and (ii) an aromatic amine, (c) an organic metal compound, where said metal is selected from the group consisting of titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, aluminum and zirconium; and (d) an organic silicon compound having at least one group selected from the group consisting of a peroxysilyl group and an o-nitrobenzyloxy group capable of forming a silanol group by irradiation with light. The photo-curable epoxy resin type composition according to this invention is capable of readily curing by light (ultraviolet ray in particular) and also capable of heat curing at a temperature of 150.degree. C.

Abstract: Photopolymerization initiators of the general formula: ##STR1## wherein R.sub.1 and R.sub.1 ' independently stand for a tertiary alkyl group or a tertiary aralkyl group and R.sub.2 and R.sub.2 ' independently stand for a hydrogen atom, a tertiary alkoxy group, or a tertiary aralkyloxy group are disclosed. They are useful for effecting polymerization of radically polymerizable unsaturated compounds.

Abstract: A pressure sensitive adhesive film reducible in the adhesive force by the application thereto of the ultraviolet light which comprises:(a) a base film permeable to the ultraviolet light; and(b) a layer of a pressure sensitive adhesive formed on one side of the base film, the adhesive comprising:(i) at least one elastic polymer selected from the group consisting of a polymer mainly composed of acrylic acid ester copolymers and a saturated copolyester mainly composed of dibasic carboxylic acids and dihydroxy alcohols;(ii) an ultraviolet light polymerizable acrylic acid ester having not less than two acryloyl or methacryloyl groups in the molecule in amounts of about 15-200 parts by weight in relation to 100 parts by weight of the elastic polymer; and(iii) a photopolymerization initiator in amounts sufficent to induce the photopolymerization of the ultraviolet light polymerizable acrylic acid ester;The film is especially suitable for use as a dicing film in dicing a semiconductor wafer to dices in which the wafe

Abstract: A reactive acrylic adhesive, activated by actinic radiation includes, in addition to a photoinitiator, at least about 1.0 percent by weight of a perester compound or cumene hydroperoxide, and 0.5 percent of a tautomeric organic acid, for enhanced bond strength.

Abstract: Disclosed is a radiation curable resin composition permitting good dispersion of magnetic powders and forming a highly durable cured film, and hence suitable for use in the formation of magnetic recording media. This resin composition consists essentially of a urethane (meth)acrylate obtained by the reaction of(A) a hydroxyl-containing compound (I) composed of an amido hydroxy compound (a.sub.1) having at least one amido group and at least one isocyanate-reactive hydroxyl group in the molecule, and at least one polyol compound (a.sub.2) selected from polyester polyols, polyether polyols and alkyl polyols, the number of moles (x.sub.1) of the hydroxyl groups present in the amido hydroxy compound (a.sub.1) being from 5 to 80% of the total number of moles of the hydroxyl groups contained in component (A) and the number of moles (x.sub.2) of the hydroxyl groups present in the polyol compound (a.sub.

Abstract: There is provided a photo-curable coating composition comprising (a) a photo-curable monomer of polymer and (b) a compound having a blocked isocyanate group and at least one ethylenically unsaturated group.

Abstract: A fluoroelastomer composition is disclosed, which comprises a mixture of 100 parts by weight of a tetrafluoroethyline-propylene copolymer, not smaller than 1 part by weight and smaller than 100 parts by weight of a vinylidene fluoride-fluoroolefin copolymer having a fluoroolefin content of 1 to 20 mol %, and a cross-linking agent, said mixture being cross-linked by irradiation with electron beams. The fluoroelastomer composition has a high mechanical strength and improved low temperature characteristics. When the content of the vinylidene fluoride-fluoroolefin copolymer is not smaller than 10 parts by weight and smaller than 100 parts by weight per 100 parts by weight of the tetrafluoroethylene-propylene copolymer the fluoroelastomer composition is suitable as a material for producing heat shrinkable tubes.

Abstract: The invention relates to mixtures containing:(a) cationically polymerizable compound and(b) a compound of the formula I[R.sup.1 (FE.sup.II R.sup.2).sub.a ].sub.q.sup..sym.an an X.sup..crclbar.(I)in which a is 1 or 2, n is 1 or 2, R.sup.1 is a substituted or unsubstituted .pi.-arene, R.sup.2 is a substituted or unsubstituted .pi.-arene or cyclopentadienyl anion or indenyl anion, q is an integer from 1 to 3 and X is FSO.sub.3.sup.- or a q-valent anion of an organic sulfonic acid or of a carobxylic acid; R.sup.1 can also be a polymeric, aromatic ligand. The invention also relates to the novel compounds of the formula I. The curable mixtures can be processed in particular for the production of coatings having a good resistance to heat.

Abstract: An organosilicon compound having general formula (I) ##STR1## wherein R.sup.1 represents fluorine; l is an integer of 1 to 5; R.sup.2 represents a lower alkyl group, a lower unsaturated alkyl group or an aromatic group, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 each represent hydrogen, halogen, an alkyl group, an aryl group, a nitro group, a cyano group, and an alkoxyl group, which may be the same or different; m is an integer of 0 to 2, when m is 2, each R.sup.2 may be the same or different; and n is an integer of 1 to 3, provided that m+n is not more than 3 (m+n.ltoreq.3), and a photopolymerizable epoxy resin composition prepared by mixing an epoxy resin component, the above photodecomposing organosilicon compound, and an aluminum compound are disclosed.

Abstract: A polymerizable composition comprises a polymeric precursor selected from the group consisting of (1) at least one ethylenically-unsaturated monomer, (2) at least one epoxy monomer, and (3) polyurethane precursors, and a curing agent comprising an organometallic compound and an onium salt.

Abstract: A device, e.g., an electrical or electromechanical assembly, comprising a housing with a mechanism disposed therein which is potted by a cured mass of a self-leveling liquid composition. The composition comprises an actinic radiation cured first resin component and a subsequently cured second resin component which is non-cured under the actinic radiation conditions effective for curing the first resin component. Also disclosed is an appertaining method of making such devices.Depending on the depth of the composition which is to be cured in the housing, it may be desirable to utilize the self-leveling liquid composition as either a single homogeneous mixture of the first and second resin components, or, where the depth of the housing is greater than the depth of UV penetration, as a cured mass wherein the first resin component is in a separate and discrete resin layer overlying a lower resin layer containing the second resin component but not the first resin component.

Abstract: An energy polymerizable composition comprises at least one ethylenically-unsaturated monomer, one of polyurethane precursors, and at least one epoxy monomer, and a curing agent comprising an organometallic compound, and an onium salt.

Abstract: A compound of general formula ##STR1## in which X.sup.- represents one equivalent of an anion; R.sup.5 represents a hydrogen atom or a methyl group; each R.sup.4 independently represents a methyl or ethyl group; and each of R.sup.1, R.sup.2 and R.sup.3 independently represents a hydrogen or halogen atom, an alkyl, alkoxy or alkylthio group having from 1 to 4 carbon atoms, an arylthio group or a group of formula ##STR2## in which R.sup.4, R.sup.5 and X have the meanings given above, are useful as water soluble co-polymerizable photoinitiators.

Abstract: A new polycarbonate copolymer resin is formed by internal generation of stabilizers bound to the polymer chain. Irradiation of a solid piece or a deoxygenated solution of the resin at a first frequency below 300 nm generates 2 to 8 mol percent of phenyl salicylate groups which are rearranged to dihydroxybenzophenone groups by irradiating the resin under oxygen excluding conditions at a second frequency from 300 to 320 nm.