Abstract: Cyclopentyl trichlorosilane can be efficiently prepared by the hydrosiliaton reaction of trichlorosilane and cyclopentene which can proceed only to a very low extent by the use of conventional platinum catalysts effective in other hydrosilation reactions. Thus, an equimolar mixture of the reactants is heated in the presence of a chlorine-deficient chloroplatinic acid catalyst of a specified chlorine:platinum atomic ratio at a temperature higher than the boiling point of the mixture under normal pressure in a pressurizable vessel so that the desired product can be obtained in a yield of 90% of the theoretical value or higher.

Abstract: A photopolymerizable coating composition comprising:(A) 100 parts by weight of a vehicle consisting essentially of a urethaneacrylate oligomer;(B) from 0.1 to 5 parts by weight of an acylphosphine oxide compound as a photoinitiator;(C) from 1 to 100 parts by weight of a color pigment; and(D) from 20 to 300 parts by weight of a transparent glass powder having an average particle size of not larger than 100 .mu.m and an index of refraction which does not differ more than 0.3 from the index of refraction of the composition excluding the color pigment.

Abstract: 3-(3,4-Dimethoxyphenyl)propyltrichlorosilane, which in a new material, was disclosed together with some ways to synthesize it. A usefulness thereof was illustrated by synthesizing polysilazane using the above new material and applying the polysilazane to a steel plate as a protective coat.

Abstract: A novel organosilicon compound of the following formula ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3, respectively, represent a monovalent hydrocarbon group having from 1 to 8 carbon atoms, is described.

Abstract: Cycloalkyl silane compounds such as cyclohexyl methyl dichlorosilane can be efficiently prepared by the photochemically induced hydrosilylation reaction. For example, an equimolar mixture of cyclohexene and methyl dichlorosilane with admixture of a catalytic amount of a platinum catalyst, which is an alcohol complex of chloroplatinic acid, is irradiated at a temperature of 70.degree. C. with ultraviolet light so that the hydrosilylation reaction takes place and proceeds almost to completeness without deactivation of the platinum catalyst to give the desired product in a yield of 90% or even higher. Unexpectedly, the efficiency of the reaction can be greatly increased when the platinum catalyst is prepared by heating a solution of chloroplatinic acid in 2-ethylhexyl alcohol at 50.degree. to 80.degree. C. for at least 4 hours.

Abstract: Cycloalkyl silane compound such as cyclohexyl methyl dichlorosilane can be efficiently prepared by the photochemically induced hydrosilylation reaction. For example, an equimolar mixture of cyclohexene and methyl dichlorosilane with admixture of a catalytic amount of an alcoholic solution of, chloroplatinic acid, is irradiated at a temperature up to 70.degree. C. with ultraviolet light so that the hydrosilylation reaction takes place and proceeds almost to completeness without deactivation of the platinum catalyst to give the desired product in a yield of 90% or even higher.

Abstract: An automatic angle adjusting apparatus for adjusting vehicle equipments to be adjusted to optimum angular positions to a driver such as a fender mirror, an inner mirror, blowing ports of an air conditioner, a speaker and a meter is disclosed. Amounts of adjustment of vehicle seat parts are detected by amounts of adjustment detectors and the optimum angles of the vehicle equipments, a height of the driver or an eye position of the driver are calculated based on the detection signals to automatically adjust the vehicle equipments to the optimum angular position. When the height or the eye position of the driver is calculated, the optimum angles are further calculated based on the calculated height or eye position.

Abstract: A silicone rubber composition suitable for hot-air vulcanization under normal pressure without the disadvantages of surface tackiness and internal voids in the cured rubber products and also free from the problems of corrosiveness to metals and toxicity to workers, which comprises, as the curing agent for the organopolysiloxane, a peroxide derivative of dibenzoyl peroxide which is substituted on each of the benzene nuclei with substituted silyl, e.g. trimethyl silyl, group or a silyl-substituted methyl, e.g. trimethylsilyl methyl, group.

Abstract: A cathodic electrodeposition coating composition which comprises:(A) 100 parts by weight of an amine-unsaturated carboxylic acid adduct of epoxidized polybutadiene having a number average molecular weight of from 500 to 10,000 and containing from 70 to 200 mmol of a tertiary amino group, from 20 to 200 mmol of an .alpha.,.beta.-unsaturated monocarboxylate group and from 200 to 2,000 mmol of a carbon-carbon double bond, per 100 g of the resin;(B) from 20 to 200 parts by weight of an addition reaction product of (a) 1 mol of an epoxy resin containing at least two epoxy groups per molecule, and (b) from 1.5 to 2.0 mol of an .alpha.,.beta.-unsaturated monocarboxylic acid;(C) from 5 to 50 parts by weight of an addition reaction product of (a) 1 mol of an epoxy resin containing at least two epoxy groups per molecule, and (b) a mixture of from 0.5 to 1.5 mol of an .alpha., .beta.-unsaturated monocarboxylic acid and from 0.5 to 1.

Abstract: N-Methyl-N-trimethylsilyl trifluoroacetamide can be synthesized by the reaction of N-methyl trifluoroacetamide and, N,O-bis(trimethylsilyl) acetamide at 40.degree.-130.degree. C. followed by fractionating distillation. The method is advantageous in respect of the absence of the step of filtration for the removal of the by-product salt and non-use of any corrosive reactant in comparison with conventional methods.

Abstract: The inventive compound 4-chloromethylphenyl methyl dichlorosilane is a novel compound not known in the prior art. The silane compound can readily be prepared by the chlorination of 4-tolyl methyl dichlorosilane with sulfuryl chloride as the chlorinating agent. The novel silane compound is useful as a component of an organochlorosilane mixture as the starting material of various kinds of silicone products or, in particular, silicone resins capable of exhibiting high performance, e.g. sensitivity for radiation-induced curing, not obtained by any combinations of known organochlorosilanes.

Abstract: A fail safe circuit is provided in the receiver of a multi-signal transmission system which includes a transmitter and a receiver each of which incorporates a resettable power supply. The fail safe circuit comprises a signal check circuit which detects whether a check bit has been received or not and a power supply reset circuit which, when the check bit is not present, once shuts off and then resets both the power supplies incorporated in the receiver and the transmitter in order to initialize the transmitter and the receiver.

Abstract: An arrangement is proposed which is adapted to prevent misconnection between two optical connectors each having a female half and a male half. The female half is formed with a projection and the male half is formed with a hole to receive the projection. A guide plate having one corner beveled is mounted on the projection to prevent misconnection.

Abstract: In the system where multiple devices share one circuit by a sequential transmission system, each of the devices is adopted to monitor the transmission from a device one stage before the device which is immediately prior to the device and when a predetermined period of time passes after the transmission from the devices two stages before the device was made, the device is made to start its own transmission without waiting for the transmission from the device immediately therebefore. The transmission control system mentioned above does not fail and the sequential transmission continues even if a part of the devices fails.

Abstract: A process for forming a moisture resistant coating, which comprises:(i) a step of priming a coating composition on a substrate and drying it to form a prime coat,(ii) a step of coating thereon a radical-polymerizable and oxidation-polymerizable, room temperature solventless coating composition containing a scaly pigment and polymerizing it to form a cured intermediate coat, and(iii) a step of finish coating thereon an air-drying finish coating composition and drying it to form an finish coat.

Abstract: A process for forming a corrosion resistant high-build type coating, which comprises (i) a step of priming on a substrate a coating composition comprising (a) 100 parts by weight of a mixture composed of from 99.9 to 60% by weight of a vegetable oil and/or a phthalic alkyd resin, and from 0.1 to 40% by weight of tricyclodecene and/or its derivative, and (b) from 1 to 500 parts by weight of at least one member selected from the group consisting of an oxyacid salt, and metal lead and its oxide and salt, followed by drying it to form a prime coat, and (ii) a step of applying thereon a radical-polymerizable and oxidation-polymerizable, room temperature curing type solventless coating composition, and polymerizing it to form a cured coating film.

Abstract: In an apparatus for preserving different kinds of reagents to be selectively delivered for performing different test items in an automatic chemical analyzer, the reagents are contained in respective vessels which are placed on a turntable rotatably arranged in a compartment inside of which is kept at a low temperature, beside each reagent container is movably arranged a plug plate having an elastic plug secured thereto and a movable lever is arranged to engage with any one of the plug plate so as to remove the plug out of an opening of the reagent vessel only when a probe of a delivery device is moved through the opening.

Abstract: An anticorrosive coating process comprises:(i) a step of forming a primer coating layer by applying on a substrate an oil-type anticorrosive coating or an alkyd resin-type anticorrosive coating as a primer coating, followed by air-drying,(ii) a step of forming a binder coating layer by applying on the primer coating layer a phenol-modified alkyd resin-type coating containing a flaky pigment, followed by air-drying, and(iii) a step of forming a top coating layer by applying on the binder layer a top coating comprising (a) a fluorine-containing copolymer composed of from 40 to 60 molar % of a fluoroolefin, from 5 to 45 molar % of cyclohexylvinyl ether, from 5 to 45 molar % of an alkylvinyl ether, from 3 to 15 molar % of a hydroxyalkylvinyl ether and from 0 to 30 molar % of other comonomer and (b) a polyisocyanate, followed by air-drying.

Abstract: An anticorrosive coating process comprises:(i) a step of applying on a substrate a zinc-rich paint or an epoxy resin primer coating, followed by air-drying,(ii) a step of applying thereon an intermediate synthetic resin coating, followed by air-drying, and(iii) a step of applying thereon a top coating comprising (a) a fluorine-containing copolymer composed of from 40 to 60 molar % of a fluoroolefin, from 5 to 45 molar % of cyclohexylvinyl ether, from 5 to 45 molar % of an alkylvinyl ether, from 3 to 15 molar % of a hydroxyalkylvinyl ether and from 0 to 30 molar % of other comonomer and (b) a polyisocyanate, followed by air-drying.

Abstract: N-Methyl-N-trimethylsilyl trifluoroacetamide can be synthesized by the reaction of N-methyl trifluoroacetamide and, N,O-bis(trimethylsilyl) acetamide at 40.degree.-130.degree. C. followed by fractionating distillation. The method is advantageous in respect of the absence of the step of filtration for the removal of the by-product salt and non-use of any corrosive reactant in comparison with conventional methods.