Abstract: Curable compositions comprising a substance that produces a base when exposed to radiation and a polymer molecule that contains silicon-hydrogen bonds which react with hydroxyl groups under the action of the base to form silicon-oxygen bonds (Si--O) and hydrogen molecules. These compositions cure when exposed to radiation. A pattern can be formed by placing a mask between a coating of the composition and the radiation source during this exposure episode and thereafter dissolving the uncured composition. The compositions have little weight loss during their cure, they can be cured by low intensity radiation, and they yield heat-resistant cured products.

Abstract: This invention pertains to a curable composition comprising a N-substituted 4-(o-nitrophenyl)dihydropyridine (a compound that generates base under the action of ultraviolet radiation) and a silanol-containing polymer that condenses under the action of the base generated to form a siloxane bond. The compositions of the instant invention cure by exposure to ultraviolet radiation. Cured patterns may be formed from the curable composition by interposing a mask between a film of the said composition and the radiation source during UV exposure, then dissolving and removing the uncured composition to form a pattern, and thereafter heating the residual material. The compositions can be cured by low-strength ultraviolet radiation and produce a highly heat-resistant cured product.

Abstract: A curable polysiloxane of formulaA.sub.a B.sub.b (R.sub.3 SiO.sub.0.5).sub.c (R.sub.2 SiO).sub.d (RSiO.sub.1.5).sub.e (SiO.sub.2).sub.fwhere A and B are silacyclobutane, disilacyclobutane or benzosilacyclobutene functional groups. A composition of matter comprising this polysiloxane and a copper, silver or gold containing catalyst. A method of curing this polysiloxane.

Abstract: The present invention pertains to a curable composition which comprises a) a N-substituted 4-(o-nitrophenyl)dihydropyridine which constitutes a base-generating substance that is caused to generate a base by the action of ultraviolet light, and (b) a silicone polymer (R.sub.2 SiO.sub.2/2)(RSiO.sub.3/2) containing silicon-hydrogen bonds (Si--H) which are capable of reacting with hydroxy groups to form silicon-oxygen bonds (Si--O) and hydrogen molecules (H.sub.2) under the effect of the base. This composition is cured by irradiation with ultraviolet light. Patterns are formed by placing a mask between a coating film of the composition and the ultraviolet light source during the irradiation with ultraviolet light, and then dissolving and removing the uncured portions of the composition following said irradiation.

Abstract: Curable compositions comprising a substance that produces a base when exposed to radiation and a polymer molecule that contains silicon-hydrogen bonds which react with hydroxyl groups under the action of the base to form silicon-oxygen bonds (Si--O) and hydrogen molecules. These compositions cure when exposed to radiation. A pattern can be formed by placing a mask between a coating of the composition and the radiation source during this exposure episode and thereafter dissolving the uncured composition. The compositions have little weight loss during their cure, they can be cured by low intensity radiation, and they yield heat-resistant cured products.

Abstract: The introduction of a highly spin-coatable silicone resin that does not produce large amounts of volatiles during its cure, and that is a precursor to highly heat-resistant, optically transparent cured products that exhibit an excellent hardness. The silicone resin comprises a silicone polymer of the general formula:(Ph.sub.2 SiO).sub.a (HSiO.sub.3/2).sub.b (R.sup.1 SiO.sub.3/2).sub.cin which R.sup.1 is hydrogen or C.sub.1 to C.sub.8 hydrocarbon group, possibly containing a heteroatom, Ph is a phenyl group and 6.ltoreq.a+b+c.ltoreq.1,000, 0.6>a/(a+b+c).gtoreq.0.4, and 1.0.gtoreq.b/(b+c).gtoreq.0.2.

Abstract: There is disclosed a diphenylsiloxane oligomer functionalized at both terminals and methods for the preparation thereof, said oligomer having the following general formulaG-(OSiPh.sub.2).sub.m O-G (i)wherein Ph denotes a phenyl radical, m is 3 to 50 and G has a formula independently selected from the group consisting of ##STR1## in which R, R.sup.4 and R.sup.5 are independently selected from the group consisting of methyl, phenyl and R.sup.1, R.sup.1 is selected from the group consisting of hydrogen and a monovalent hydrocarbon group having 2 to 8 carbon atoms excluding phenyl, tolyl, xylyl, and ethylphenyl radicals, Q is a divalent hydrocarbon group and k is independently 0 to 3 at each terminus of said oligomer with the proviso that k is >0 at one terminus of said oligomer, at least one substituent among R, R.sup.4 and R.sup.5 in formula (ii) is R.sup.1 and, when both R.sup.4 and R.sup.5 groups at one terminus of said oligomer are phenyl, groups R.sup.4 and R.sup.

Abstract: There is disclosed a diphenylsiloxane oligomer functionalized at both terminals, and methods for the preparation thereof, said oligomer having the following general formula G-(OSi(Ph).sub.2).sub.m O--G wherein Ph denotes a phenyl radical, m is 3 to 50 and G is has a formula independently selected from the group consisting of ##STR1## in which R.sup.1 is independently selected from the group consisting of hydrogen and a monovalent hydrocarbon group having 2 to 8 carbon atoms, said monovalent hydrocarbon group excluding phenyl, tolyl, xylyl, and ethylphenyl radicals, R is independently selected from the group consisting of R.sup.1, methyl radical and phenyl radical, Q is a divalent hydrocarbon group and n is an integer having a value of 1 to 3.

Abstract: Novel 1-aza-3-oxa-4-silacyclohex-1-ene compounds, and tautomers thereof, having utility as chemical modifiers or cross linkers for hydroxy-containing organic or inorganic substances are disclosed, said compounds being represented by the general formula (I) ##STR1## wherein R.sup.1 and R.sup.2 each independently denotes a monovalent organic group having 1 to 6 carbon atoms selected from the group consisting of saturated hydrocarbon groups and unsaturated hydrocarbon groups, R.sup.3 deontes an organic group having 1 to 30 carbon atoms selected from the group consisting of saturated hydrocarbon groups and unsaturated hydrocarbon groups, said R.sup.3 groups optionally containing a heteroatom selected from the group consisting of oxygen, nitrogen, sulfur, silicon, fluorine, chlorine, bromine and iodine, Me denotes a methyl radical and n is an integer having a value of 1 to 4.

Abstract: The present invention introduces novel 1-aza-2-silacyclobutane compounds whose nitrogen is substituted by a hydrocarbon group or heteroatom-containing hydrocarbon group, whose N--Si bond remains highly reactive, and which are very effective as silanol endblocking agents and silane coupling agents. The present invention also introduces a method for the preparation of these novel 1-aza-2-silacyclobutanes by the intramolecular hydrosilylation reaction of N,N-disubstituted aminosilane.

Abstract: The present invention relates to a method for the preparation of 1-aza-2-silacyclopentane compounds whose nitrogen is substituted by a hydrocarbon group or a heteroatom-containing hydrocarbon group. The method comprises effecting an intramolecular hydrosilylation reaction of a N,N-disubstituted aminosilane. In a preferred method, the intramolecular hydrosilylation reaction is conducted in the presence of a rhodium-containing catalyst.

Abstract: An improved process for polymerizing butene-1 in the presence of a polymerization catalyst composed of (a) a catalyst component containing titanium and halogen as essential constituents and (b) an organometallic compound, wherein the improvement comprises bringing said catalyst component into contact with an activity inhibitor when said catalyst component is activated or after said catalyst component has been activated with said organometallic compound, and subsequently polymerizing butene-1.

Abstract: A process for preparing aminopropyl silanes in which an allylamine is reacted with a hydrosilane in the presence of a catalyst comprising (i) metallic rhodium or a rhodium compound and (ii) a basic compound. By the proposed process the corresponding gammaaminopropyl silane can be prepared in a high selectivity and yield within a short period of reaction time.

Abstract: In a process for preparing aminopropyl alkoxy silanes comprising reacting an allylamine with a hydro-alkoxy silane in the presence of a rhodium catalyst, the improvement which comprises use of a rhodium phosphide or its oligomer as said rhodium catalyst. By this process the desired gamma-isomer can be prepared in a high selectivity and yield within a short reaction time.

Abstract: A process for producing a catalyst component for polymerization of olefins which comprises contacting (a) a metal oxide with (b) a magnesium alkoxide, contacting the resulting contact product with (c) a halogen-containing compound, and finally contacting the resulting contact product with (d) a titanium compound.

Abstract: Silanes are produced by the disproportionation and/or redistribution reaction of chlorosilanes using a novel catalyst having a longer life and consisting of a quaternary phosphonium salt bonded to an organic macromolecule or polymer, represented by the following general formula: ##STR1## wherein .circle.P.circle. is an organic macromolecule or polymer, A is a bridging group between phosphorus and the organic macromolecule or polymer, R.sup.1, R.sup.2 and R.sup.3 are selected from the group consisting of hydrogen, C.sub.1 -C.sub.20 alkyl groups and aralkyl groups such as benzyl and phenethyl groups, which can contain oxygen or halogen atoms, and X is a halogen atom.

Abstract: A process for producing a catalyst component for polymerization of olefins which comprises contacting (a) a metal oxide with (b) an organomagnesium compound represented by the formula RMgR' wherein R denotes a hydrocarbyl group and R' denotes a hydrocarbyl group or a halogen atom, contacting the resulting contacting product with (c) carbon dioxide, and further contacting the resulting contact product with (d) a titanium compound. Optionally, the carbon dioxide contacted contact product can be treated with the halogen-containing compound prior to contact with the titanium compound.

Abstract: Silanes are produced by the disproportionation and/or redistribution reaction of chlorosilanes using a novel catalyst having a longer life and consisting of a quaternary phosphonium salt bonded to an organic macromolecule or polymer, represented by the following general formula: ##STR1## wherein .circle.P is an organic macromolecule or polymer, A is a bridging group between phosphorus and the organic macromolecule or polymer, R.sup.1, R.sup.2 and R.sup.3 are selected from the group consisting of hydrogen, C.sub.1 -C.sub.20 alkyl groups and aralkyl groups such as benzyl and phenethyl groups, which can contain oxygen or halogen atoms, and X is a halogen atom.

Abstract: A process for producing a catalyst component for polymerization of olefins which comprises contacting (a) a metal oxide with (b) a magnesium alkoxide, contacting the resulting contact product with (c) a halogen-containing compound, and finally contacting the resulting contact product with (d) a titanium compound.

Abstract: A process for producing a catalyst component for polymerization of olefins which comprises contacting (a) a metal oxide with (b) an organomagnesium compound represented by the formula RMgR' wherein R denotes a hydrocarbyl group and R' denotes a hydrocarbyl group or a halogen atom, contacting the resulting contacting product with (c) carbon dioxide, and further contacting the resulting contact product with (d) a titanium compound. Optionally, the carbon dioxide contacted product can be treated with the halogen-containing compound prior to contact with the titanium compound.