专利号:US-9932423-B2 优先权日:2015-09-24 标题:Hydrogenation of annulated cyclopentadienyl metal complexes and metallocene catalysts comprising such 发明人:MCCULLOUGH LAUGHLIN G 权利人:EXXONMOBIL CHEMICAL PATENTS INC 摘要:Disclosed are methods for making partially hydrogenated annulated cyclopentadienyl complexes which can provide efficient synthesis of metallocene catalysts desired for olefin polymerization.
专利号:US-8168556-B2 优先权日:2007-10-25 标 题 :Racemoselective synthesis of ansa-metallocene compounds, ansa-metallocene compounds, catalysts comprising them, process for producing an olefin polymer by use of the catalysts, and olefin homo- and copolymers 发明人:SCHULTE JOERG; SELL THORSTEN; THORN MATTHEW GRANT; WINTER ANDREAS; DIMESKA ANITA 权利人:SCHULTE JOERG; SELL THORSTEN; THORN MATTHEW GRANT; WINTER ANDREAS; DIMESKA ANITA; LUMMUS NOVOLEN TECHNOLOGY GMBH 摘要:A metallocene compound with the 4- and 7-positions on the indenyl moiety possessing large aromatic substituents is prepared in accordance with a method which produces substantially 100 percent racemic isomer. Advantageously, polymerization catalysts including the metallocene of the invention provide superior olefin polymerization results.
专利号:US-9765042-B2 优先权日:2013-10-07 标题 :Methods of chemical synthesis of diaminophenothiazinium compounds including methylthioninium chloride (MTC) 发明人:SINCLAIR JAMES PETER; NICOLL SARAH LOUISE; STOREY JOHN MERVYN DAVID 权利人:WISTA LAB LTD 摘要:Methods of synthesizing and purifying certain 3,7-diamino-phenothiazin-5-ium compounds (referred to herein as “diaminophenothiazinium compoundsâ€?) including Methythioninium Chloride (MTC) (also known as Methylene Blue) are provided.
专利号:US-6518444-B1 优先权日:2000-12-18 标题 :Preparation of polymerization catalysts 发明人:MCCONVILLE DAVID H; SHER JAIMES 权利人:UNIVATION TECH LLC 摘要:A method to synthesize a Group 15 containing metal polymerization catalyst is disclosed. The method includes an efficient high temperature synthesis of Group 15 containing ligands, especially arylamine ligands, for use in preparing polymerization catalysts and catalyst systems.
专利号:US-7285608-B2 优先权日:2004-04-21 标题:Metallocene ligands, metallocene compounds and metallocene catalysts, their synthesis and their use for the polymerization of olefins 发明人:SCHOTTEK JOERG; PACZKOWSKI NICOLA STEFANIE; WINTER ANDREAS; SELL THORSTEN 权利人:NOVOLEN TECH HOLDINGS CV 摘要:A catalyst system includes a metallocene compound having the formula R 9 L 1 L 2 M 1 R 1 R 2 wherein R 9 is a bridge between ligands L 1 and L 2 and M 1 is a metal of Group IVB of the Periodic Table such as titanium, zirconium and hafnium and R 1 and R 2 can be hydrogen or aliphatic or aromatic groups. Bridge R 9 can include silicon, germanium or tin. The metallocene compound of the invention as synthesized has a racemic to meso isomer ratio of greater than 5 to 1, thereby precluding the need for subsequent separation of the meso isomer.
专利号:US-7169864-B2 优先权日:2004-12-01 标题 :Metallocene catalysts, their synthesis and their use for the polymerization of olefins 发明人:PACZKOWSKI NICOLA S; WINTER ANDREAS; LANGHAUSER FRANZ 权利人:NOVOLEN TECH HOLDINGS CV 摘要:A process for the preparation of a catalyst system includes the steps of combining a support material with a first composition which includes at least one aluminoxane in a first solvent to provide an aluminoxane loaded support; and, contacting the aluminoxane loaded support with a second composition which includes at least one metallocene compound, a second solvent, and a cocatalyst, wherein the cocatalyst includes a second portion of the at least one aluminoxane alone or in combination with an ionic compound and/or a Lewis acid.
参考标题:Application Of Silicon-Initiated Water Splitting For The Reduction Of Organic Substrates 作者:Ashot Gevorgyan,Satenik Mkrtchyan,Tatevik Grigoryan,Viktor O. Iaroshenko |发布日期:2018.5 摘要:Several Important Classes Of Organic Compounds Is Described. It Is Found That The Reductive Water Splitting Can Be Promoted By Several Metalloids Among Which Silicon Shows The Best Efficiency. The Developed Methodologies Were Applied For The Reduction Of Nitro Compounds, N-Oxides, Sulfoxides, Alkenes, Alkynes, Hydrodehalogenation As Well As For The Gram-Scale Synthesis Of Several Substrates Of Industrial
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