CAS: 7784-16-9; Sodium Tetrachloroaluminate

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专利信息

专利号:US-4552973-A
优先权日:1984-03-23
标题 :Process for the preparation of dimethyldichlorosilane
发明人：FELDNER KURT; GRAPE WOLFGANG
权利人:BAYER AG
摘要:A process for the preparation of dimethyldichlorosilane from the low-boiling and high-boiling by-products of the direct synthesis of methylchlorosilane, comprising reacting methyltrichlorosilane simultaneously with the low-boiling components having a high content of methyl groups and with the high-boiling non-cleavable components, in the presence of a catalyst, at a temperature between about 250° C. and 400° C. and under a pressure of up to 100 bar.

专利号:US-4117239-A
优先权日:1973-11-19
标题 :Process for preparation of 2-anthryl and substituted 2-anthryl functional monomers and polymers
发明人：STOLKA MILAN; PEARSON JAMES M; YANUS JOHN F
权利人:XEROX CORP
摘要:Process for preparation of 2-anthryl and substituted 2-anthryl functional monomers and polymers. In the process for preparation of these monomers, an anthracenic reactant of the formula: ##STR1## wherein X and Y are independently selected from hydrogen, chlorine, bromine, alkyl of 1 to 4 carbon atoms or phenyl n Is acylated in nitrobenzene under conditions which favor reaction at the two position. The resulting acylated product can then be (a) reacted with an alkylidenephosphorane (Wittig synthesis) or (b) reduced to the corresponding alcohol. Subsequent to such reduction, this alcohol can undergo further modification at the hydroxyl function to form a polymerizable addition monomer. Through the proper selection of the relative concentration of reactants and control over processing conditions, it is possible not only to prepare such monomers in high yields but also upon polymerization of such monomers, to obtain high molecular weight 2-anthryl and substituted 2-anthryl functional polymers (molecular weight of at least 10 4 ). Polymers of such high molecular weight can readily be formed without the use of binders into self-supporting films. Such films are intrinsically photoconductive in the ultraviolet region of the electromagnetic spectrum and have good transport capabilities for charge carriers of both polarities.

专利号:US-4043812-A
优先权日:1973-11-19
标 题 :Electrostatographic imaging member and process using anthracene functional polymers
发明人：STOLKA MILAN; PEARSON JAMES M; YANUS JOHN F
权利人:XEROX CORP
摘要:Process for preparation of 2-anthryl and substituted 2-anthryl functional monomers and polymers. In the process for preparation of these monomers, an anthracenic reactant of the formula: wherein X and Y are independently selected from hydrogen, chlorine, bromine, alkyl of 1 to 4 carbon atoms or phenyl IS ACYLATED IN NITROBENZENE UNDER CONDITIONS WHICH FAVOR REACTION AT THE TWO POSITION. The resulting acylated product can then be (a) reacted with an alkylidenephosphorane (Wittig synthesis) or (b) reduced to the corresponding alcohol. Subsequent to such reduction, this alcohol can undergo further modification at the hydroxyl function to form a polymerizable addition monomer. Through the proper selection of the relative concentration of reactants and control over processing conditions, it is possible not only to prepare such monomers in high yields but also upon polymerization of such monomers, to obtain high molecular weight 2-anthryl and substituted 2-anthryl functional polymers (molecular weight of at least 104). Polymers of such high molecular weight can readily be formed without the use of binders into self-supporting films. Such films are intrinsically photoconductive in the ultraviolet region of the electromagnetic spectrum and have good transport capabilities for charge carriers of both polarities.