CAS: 557-20-0; Diethylzinc

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CAS号74-96-4 溴乙烷 | CAS号7646-85-7 氯化锌 | CAS号75-03-6 碘乙烷 | CAS号925-90-6 乙基溴化镁 | CAS号1184-55-0 zinc,methanolate | CAS号2386-64-3 乙基氯化镁 | CAS号7440-66-6 锌标准溶液 | CAS号97-93-8 三乙基铝 | CAS号13824-25-4 triethyl-alane,... | CAS号811-49-4 乙基锂 | CAS号104849-66-3 triphenyltin,zinc | CAS号1067-20-5 3,3-二乙基戊烷 | CAS号624-78-2 N-甲基乙胺 | CAS号74-89-5 氨基甲烷 | CAS号110611-22-8 (3R)-1-phenylpe... | CAS号27975-78-6 1-苯基-1-戊炔-3-醇 | CAS号36678-81-6 (3R)-(-)-3-Phen... | CAS号27855-02-3 (3S)-3-Phenylpe... | CAS号1113-22-0 Ethyldimethylborane

专利信息

专利号:US-6479685-B2
优先权日:1998-01-09
标题 :Metallocene catalysts for synthesis of high-melting polyolefin copolymer elastomers
发明人：WAYMOUTH ROBERT M; KRAVCHENKO RAISA L; MACIEJEWSKI PETOFF JENNIFER; HUNG JOYCE
权利人:TRUSTEES OF THE LELAND STANDAR
摘要:Metallocene catalysts having plural coordination geometries for synthesis of high melting polyolefin copolymers suitable as thermoplastic elastomers. The inventive catalysts comprise unbridged, substituted or unsubstituted cyclopentadienyl metallocene catalysts that are capable of inter-converting between states with different polymerization or copolymerization characteristics, which interconversion is controlled by selecting the substituents of the cyclopentadienyl ligands so that the rate of interconversion of the two states is within several orders of magnitude of the rate of formation of a single polymer chain. Where r i >r f the polymer can be characterized as multiblock; where r i
专利号:US-7501599-B2
优先权日:2001-04-24
标题 :Apparatus for plasma synthesis of metal oxide nanopowder
发明人：BOULOS MAHER I; JUREWICZ JERZY W; NESSIM CHRISTINE A ABDEL MESSIH
权利人:TEKNA PLASMA SYSTEMS INC
摘要:A process and apparatus for the synthesis of metal oxide nanopowder from a metal compound vapour is presented. In particular a process and apparatus for the synthesis of TiO 2 nanopowder from TiCl 4 is disclosed. The metal compound vapour is reacted with an oxidizing gas in electrically induced RF frequency plasma thus forming a metal oxide vapour. The metal oxide vapour is rapidly cooled using a highly turbulent gas quench zone which quickly halts the particle growth process, yielding a substantial reduction in the size of metal oxide particles formed compared with known processes. The metal compound vapour can also react with a doping agent to create a doped metal oxide nanopowder. Additionally, a process and apparatus for the inline synthesis of a coated metal oxide is disclosed wherein the metal oxide particles are coated with a surface agent after being cooled in a highly turbulent gas quench zone.

专利号:US-7615169-B2
优先权日:2004-09-20
标题 :Method for synthesis of colloidal nanoparticles
发明人：STROUSE GEOFFREY FIELDING; GERBEC JEFFREY A; MAGANA DONNY
权利人:UNIV CALIFORNIA
摘要:A method for synthesis of high quality colloidal nanoparticles using comprises a high heating rate process. Irradiation of single mode, high power, microwave is a particularly well suited technique to realize high quality semiconductor nanoparticles. The use of microwave radiation effectively automates the synthesis, and more importantly, permits the use of a continuous flow microwave reactor for commercial preparation of the high quality colloidal nanoparticles.

专利号:US-6184168-B1
优先权日:1997-09-22
标题:Synthesis of 1,4-trans-polybutadiene using a lanthanide organic acid salt catalyst
发明人：LYNCH THOMAS J
权利人:BRIDGESTONE CORP
摘要:The invention provides a catalyst composition, comprising: (a) an organolithium compound; and, (b) an organic acid salt of lanthanide series element; wherein: (1) only components (a) and (b) are required to promote the synthesis of 1,4-trans-polybutadiene; (2) the ratio of component (a) to component (b) is selected to maximize formation of the trans structure of said 1,4-trans-polybutadiene; and, (3) components (a) and (b) are selected for enabling further diblock synthesis. The invention further contemplates a process for using the catalyst to synthesize 1,4-trans-polybutadiene and other polymers and copolymers having trans configuration in the conjugated diene monomer contributed units.

专利号:US-7927516-B2
优先权日:2004-09-20
标题 :Method for synthesis of colloidal nanoparticles
发明人：STROUSE GEOFFREY F; GERBEC JEFFREY A; MAGANA DONNY
权利人:UNIV CALIFORNIA
摘要:A method for synthesis of high quality colloidal nanoparticles using comprises a high heating rate process. Irradiation of single mode, high power, microwave is a particularly well suited technique to realize high quality semiconductor nanoparticles. The use of microwave radiation effectively automates the synthesis, and more importantly, permits the use of a continuous flow microwave reactor for commercial preparation of the high quality colloidal nanoparticles.

专利号:US-11247977-B2
优先权日:2018-06-22
标题 :Compound and use thereof in synthesis of brivaracetam intermediate and crude drug
发明人：FENG YAN; WANG RUYONG; YE YIZHANG; ZHANG FENGSEN; GONG XUAN; WANG ZHONGHONG; KANG XINSHAN
权利人:FUJIAN HAIXI PHARMACEUTICALS CO LTD
摘要:The present application provides a compound in formula III, and further provides a use of the compound in the synthesis of a Brivaracetam intermediate and a crude drug, and a synthesis method. A raw material involved in the method of the present application is low in costs and easily available; (R)-4-propyl-dihydrofuran-2-ketone having high optical purity can be prepared; complicated separation and purification steps are avoided; costs are reduced, and the method is more applicable to industrial production.