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公开(公告)号：JPH1092437A
公开(公告)日：1998-04-10
申请号：JP15322497
申请日：1997-06-11
Applicant: DOW CORNING
Inventor： DAHN JEFFERY R , WILSON ALF M , XING WEIBING , ZANK GREGG A
IPC: C04B35/58 , H01M4/58 , H01M4/587 , H01M4/62 , H01M10/052 , H01M10/0587 , H01M10/36 , H01M4/02
Abstract: PROBLEM TO BE SOLVED: To provide a battery which has large capacity, low irreversible capacity, and high density by thermally decomposing a composition containing a silazane polymer into ceramic material, and containing lithium ions in the ceramic material so as to form an electrode. SOLUTION: After forming a composition containing a silazane polymer into a required shape, the same is thermally decomposed into ceramic material in inert gas and/or vacuum at a temperature of 700 deg.C or more, and thereafter, the same is heated and formed into an electrode. After the electrode is inserted into a battery finally, lithium ions are interposed so that the lithium ions are contained in the electrode. Thereby, it is possible to obtain a lithium ion battery which has large capacity, low irreversible capacity, high density, and further in which reaction speed between inserted lithium and electrolyte is small.
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公开(公告)号：CA2112876A1
公开(公告)日：1994-07-09
申请号：CA2112876
申请日：1994-01-05
Applicant: DOW CORNING
Inventor： BUJALSKI DUANE R , ZANK GREGG A , BARNARD THOMAS D
Abstract: METHOD OF CROSSLINKING POLYSILAZANE POLYMERS The present invention describes a novel method for crosslinking polysilazane polymers having Si-H or N-H bonds. The method comprises mixing the polysilazane with a silazane crosslinker having at least 2 boron functional groups which can react with the Si-H or N-H bonds of the polysilazane and then facilitating crosslinking.
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Patent Agency Ranking
公开(公告)号：CA2102026A1
公开(公告)日：1994-05-03
申请号：CA2102026
申请日：1993-10-29
Applicant: DOW CORNING , UNIV PENNSYLVANIA
Inventor： ZANK GREGG A , SNEDDON LARRY G , SU KAI
IPC: C04B35/571 , C04B35/589 , C07F7/10 , C08G77/48 , C08G77/62 , C08G79/08
Abstract: BORAZINE DERIVATIZED HYDRIDOPOLYSILAZANE POLYMERS There is described herein a method of preparing borazine modified hydridopolysilazane polymers. The method comprises reacting a hydridopolysilazane polymer with a material comprising at least one borazine ring for a time sufficient to produce the desired polymer. This invention also relates to the novel polymers produced by this method.
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公开(公告)号：CA2102025A1
公开(公告)日：1994-05-03
申请号：CA2102025
申请日：1993-10-29
Applicant: DOW CORNING , UNIV PENNSYLVANIA
Inventor： ZANK GREGG A , SNEDDON LARRY G , SU KAI
IPC: C04B35/571 , C04B35/589 , C08G77/48 , C08G77/60 , C08G79/08 , C04B35/00
Abstract: BORAZINE DERIVATIZED POLYCARBOSILANE POLYMERS AND CERAMICS DERIVED THEREFROM There is described herein a method of preparing borazine modified polycarbosilane polymers. The method comprises reacting a polycarbosilane polymer with a material comprising at least borazine ring for a time sufficient to produce the desired polymer. This invention also relates to the polymers produced by said method and to the ceramic products derived from heating them to temperatures greater than 800.degree.C.
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公开(公告)号：CA1338969C
公开(公告)日：1997-03-04
申请号：CA613367
申请日：1989-09-26
Applicant: DOW CORNING
Inventor： BURNS GARY T , ZANK GREGG A
IPC: C04B35/571 , C08G77/48 , C08G77/60 , C08G79/00
Abstract: A process for the preparation of preceramic metallopolysilanes is described. The process consists of reacting polysilanes with metallic compounds from which can be generated open coordination sites associated with the metallic element. Such open coordination sites can be generated by the reduction of the metallic compound with an alkali metal reducing agent or by heating a metallic compound which has thermally labile ligands or by the UV irradiation of a carbonyl-containing metallic compound. The metals which can be incorporated into the polysilane include aluminum, boron, chromium, molybdenum, tungsten, titanium, zirconium, hafnium, vanadium, niobium and tantalum. These metallopolysilanes are useful, when fired at high temperatures, to form metal-containing ceramic materials.
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公开(公告)号：CA1336100C
公开(公告)日：1995-06-27
申请号：CA616742
申请日：1993-09-02
Applicant: DOW CORNING
Inventor： CHANDRA GRISH , ZANK GREGG A
Abstract: Preceramic acetylenic polysilanes are described which contain -(CH2)wC?CR' groups attached to silicon where w is an integer from 0 to 3 and where R' is hydrogen, an alkyl radical containing 1 to 6 carbon atoms, a phenyl radical, or an -SiR'''3 radical wherein R''' is an alkyl radical containing 1 to 4 carbon atoms. The acetylenic polysilanes are prepared by reacting chlorine- or bromine-containing polysilanes with either a Grignard reagent of general formula R'C?C(CH2)wMgX' where w is an integer from 0 to 3 and X' is chlorine, bromine, or iodine or an organolithium compound of general formula R'C?C(CH2)wLi where w is an integer from 0 to 3. The acetylenic polysilanes can be converted to ceramic materials by pyrolysis at elevated temperatures under an inert atmosphere.
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公开(公告)号：CA1328656C
公开(公告)日：1994-04-19
申请号：CA572924
申请日：1988-07-25
Applicant: DOW CORNING
Inventor： CHANDRA GRISH , ZANK GREGG A
IPC: C04B35/571 , C04B35/622 , C08G77/00 , C08G77/02 , C08G77/48 , C08G77/60 , C04B35/56
Abstract: PRECERAMIC ACETYLENIC POLYSILANES Preceramic acetylenic polysilanes are described which contain -(CH2)wC?CR' groups attached to silicon where w is an integer from 0 to 3 and where R' is hydrogen, an alkyl radical containing 1 to 6 carbon atoms, a phenyl radical, or an -SiR'''3 radical wherein R''' is an alkyl radical containing 1 to 4 carbon atoms. The acetylenic polysilanes are prepared by reacting chlorine- or bromine-containing polysilanes with either a Grignard reagent of general formula R'C?C(CH2)wMgX' where w is an integer from 0 to 3 and X' is chlorine, bromine, or iodine or an organolithium compound of general formula R'C?C(CH2)wLi where w is an integer from 0 to 3. The acetylenic polysilanes can be converted to ceramic materials by pyrolysis at elevated temperatures under an inert atmosphere.
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