摘要:
In a process for preparing oganohalosilanes by reacting metallic silicon particles with an organohalide in the presence of a copper catalyst, a contact mass composed of the metallic silicon and the catalyst further contains a minute, but effective amount of a catalytic metal powder which has been produced by an atomizing technique. The process is successful in drastically increasing a formation rate without lowering the selectivity of useful silane.
摘要:
The igniter connector comprises an insulating housing having a bead-receiving cavity open at one end, a partition in a center of a bottom wall of the cavity, a ferrite bead disposed in the bead-receiving cavity, and holes in the bottom wall of the bead-receiving cavity for insertion of pin terminals, the ferrite bead that is inserted in the bead-receiving cavity and secured in the insulating housing with the ferrite bead having a central opening through which the partition is passed when the ferrite bead is inserted in the bead-receiving cavity, a pair of electrical contacts having receptacle sections for electrical connection with the pin terminals are arranged in contact-receiving cavities disposed between the partition and the ferrite bead inserted in the bead-receiving cavity and wire-connecting sections for connection to electrical wires, and a cover member enclosing the bead-receiving cavity of the insulating housing is latched to the housing and has posts coaxially aligning the receptacle sections of the electrical contacts with the holes for the pin terminals. The cover member is equipped with a pressure device that exerts pressure on the ferrite bead holding it down against the bottom of the bead-receiving cavity.
摘要:
When oganohalosilanes are prepared by charging a reactor with a contact mass containing a metallic silicon powder and a copper catalyst, and introducing an organohalide-containing gas into the reactor to effect the direct reaction, a metal complex of an organophosphino compound is added to the contact mass. The invention is successful in producing organohalosilanes at a significantly improved production rate without reducing the selectivity of useful silane.
摘要:
A process for preparing hexamethylcyclo-trisilazane by heating octamethylcyclotetra-silazane in the presence of a catalyst such as a Lewis acid or a sulfur compound of the following formula ##STR1## wherein M represents Ca, Mg, Al, Fe or NH.sub.4, R represents OH, a phenyl group or a substituted phenyl group, x is 0, 1 or 2 and y is 0, 1, 2 or 3 provided that x and y are not zero at the same time, and z is 0, 1, 2 or 3.
摘要:
A method of producing dicyclopentyldichlorosilane which comprises reacting cyclopentene and dichlorosilane with each other by using a platinum catalyst and/or a rhodium catalyst in the presence of 1,3-diethinyl-1,1,3,3-tetramethyldisiloxane.
摘要:
N,O-bis(trimethylsilyl)acetamide is improved in thermal stability by adding about 0.01 to 5 mol % of a 2-mercaptobenzothiazole or a salt thereof thereto.
摘要:
A silylating agent comprising an N-(trialkylsilyl)benzanilide having the following general formula: ##STR1## wherein R.sup.1 is a lower alkyl group. This agent is reacted with a secondary amine to produce an N,N-dialkylaminotrialkylsilane. This process is free of formation of amine hydrochlorides as by-products. Therefore, the problem associated with disposal of such amine hydrochlorides and the problem of limitations on the use of the silane compound product due to mixing of such amine hydrochlorides can be obviated effectively.
摘要:
Several thexyl trialkoxy silanes as a novel class of organosilicon compounds were synthesized by the reaction of dehydrochlorination condensation between thexyl trichlorosilane and an alcohol, e.g., methyl, ethyl, isopropyl and isobutyl alcohols, and characterized by the analytical data. These compounds are useful as an intermediate in the synthetic preparation of other organosilicon compounds, starting material of various silicones, surface-treatment agent of inorganic materials and additive in complex catalysts.
摘要:
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.
摘要:
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.