CAS: 293-51-6; Cyclotetrasiloxane

📜二氯硅烷置于水体系中,用 二氯甲烷 用作溶剂,以6.1%的收率获得1,3,5,7,2,4,6,8-四氧杂四硅杂环辛烷
参考文献:Seyferth,Dietmar; Prud'Homme,Christian; Wiseman,Gary H.,Inorganic Chemistry,1983,Vol. 22,# 15,P. 2163-2167
标题:Seyferth,Dietmar; Prud'Homme,Christian; Wiseman,Gary H.,Inorganic Chemistry,1983,Vol. 22,# 15,P. 2163-2167

专利信息

专利号:US-7655206-B2
优先权日:2006-04-19
标 题:Process for the manufacture of hydrogen-rich cyclosiloxane
发明人：FESTER GERRIT; ROEWER GERHARD; KROKE EDWIN
权利人:EVONIK DEGUSSA GMBH
摘要:The present invention relates to a for controlled synthesis of hydrogen-rich cyclosiloxanes of the (H 2 SiO) n type. n nwhere n is an integer equal to or greater than 3, by reacting:n a.) a halosilane of the H 2 SiX 2 type where X=halogen with b.) a lithium salt, copper(II) salt or a salt of a metal from main group 2 or transition group 2 of the periodic table of the elements, or a mixture of these salts. n The ring size is advantageously adjustable to n=3, 4, 5, 6 (especially n=4 to 6), such that larger rings are not formed. n In a particularly advantageous embodiment of the process, for the selective preparation of cyclohexasiloxane (H 2 SiO) 6 , after the reaction, the solvent is at least partly removed and then solvent is added again.

专利号:US-8900547-B2
优先权日:2011-12-01
标题:Synthesis of high activity large crystal ZSM-5
发明人：LAI WENYIH FRANK; HAMILTON MERCI A
权利人:EXXONMOBIL RES & ENG CO
摘要:In a process for preparing a high activity, large crystal ZSM-5 type zeolite in the absence of a template, a reaction mixture can be prepared comprising water, a silica source having a surface area less than 150 m 2 /g, an alumina source, seeds, a source of an oxide of an alkali metal, M, and a source of gluconic acid or salt thereof, Q, wherein the mixture has a SiO 2 /Al 2 O 3 molar ratio≦40. The reaction mixture can be heated to a crystallization temperature from about 100° C. to 200° C. for a time sufficient for crystals of ZSM-5 to form Crystals of ZSM-5 can then be recovered from the reaction mixture which crystals can have a SiO 2 /Al 2 O 3 molar ratio≦40 and a majority of which crystals can have at least one crystalline dimension of at least about 2 μm.

专利号:US-5023168-A
优先权日:1990-03-01
标 题:Synthesis of polysiloxy containing naphthalocyanine compounds using cyclosiloxanes
发明人：JOHNSON ROBERT E
权利人:HOECHST CELANESE CORP
摘要:Provided is a method for preparing polysiloxy containing naphthalocyanine compounds. The method comprises reacting a cyclosiloxane with a nucleophile to open the ring of the cyclosiloxane. The ring opened cyclosiloxane is then reacted with a naphthalocyanine precursor and a capping group compound. The nucleophile can perform the dual role of the nucleophile and the capping group compound. The method permits the preparation of siloxane containing naphthalocyanine compounds in a more proficient manner through the use of cyclosiloxanes as reactants.

专利号:US-2012094192-A1
优先权日:2010-10-14
标题 :Composite nanowire compositions and methods of synthesis
发明人：QU JUN; DAI SHENG
权利人:QU JUN; DAI SHENG; UT BATTELLE LLC
摘要:Nanowire array compositions in which nanowires containing at least one Group IV metal (e.g., Si or Ge) in a single layer or core-shell nanowire structure, wherein, in particular embodiments, the nanowires have a transition metal core and/or are surrounded by or embedded within a metal oxide or metal oxide-ionic liquid ordered host material. The nanowire compositions are incorporated into the anodes of lithium ion batteries. Methods of preparing the nanowire compositions, particularly by low temperature methods, are also described.

专利号:US-2013144100-A1
优先权日:2011-12-01
标 题 :Synthesis of high activity large crystal zsm-5

专利号:WO-2024215360-A2
优先权日:2022-05-08
标 题 :Synthesis of shape-controlled polymer nano/microstructures using initiated chemical vapor deposition (icvd) polymerization in structured liquids