CAS: 7783-63-3; Titanium Tetrafluoride

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CAS号7664-39-3 氟化氢 | CAS号7550-45-0 四氯化钛 | CAS号7440-32-6 钛粉 | CAS号7782-41-4 氟 | CAS号13470-08-1 氟化钛 | CAS号7705-07-9 三氯化钛(III)溶液 | CAS号7790-91-2 三氟化氯 | CAS号7783-81-5 六氟化铀 | CAS号1258515-14-8 | CAS号7782-41-4 氟 | CAS号7637-07-2 三氟化硼 | CAS号13537-16-1 titanium oxyfluoride | CAS号7783-61-1 四氟化硅 | CAS号7783-60-0 四氟化硫 | CAS号2314-97-8 三氟碘甲烷 | CAS号36140-35-9 (diphenyl)fluor... | CAS号7789-68-6 溴化钛 | CAS号368-98-9 difluorophenyl-... | CAS号75-63-8 三氟溴甲烷

专利信息

专利号:US-5919876-A
优先权日:1995-08-31
标题 :Synthesis of cis-1,4-polyisoprene rubber
发明人：CASTNER KENNETH FLOYD
权利人:GOODYEAR TIRE & RUBBER
摘要:The synthesis of cis-1,4-polyisoprene by polymerizing isoprene with a catalyst system which is comprised of a titanium tetrahalide, a trialkylaluminum compound and diphenylether is plagued with the formation of gel. This invention is based upon the unexpected discovery that gel formation can be reduced by conducting such polymerizations in the presence of a diarylamine, such as para-styrenated diphenylamine. The subject invention more specifically discloses a process for synthesizing cis-1,4-polyisoprene having a low gel content which comprises polymerizing isoprene in an inert organic solvent with a preformed catalyst system which is made by reacting an organoaluminum compound with titanium tetrahalide, such as titanium tetrachloride, in the presence of at least one ether, wherein said polymerization is conducted at a temperature which is within the range of about 0 DEG C. to about 100 DEG C., and wherein said polymerization is conducted in the presence of a diarylamine.

专利号:US-10851130-B2
优先权日:2018-01-29
标题:Chemical synthesis method of Plesiomonas shigelloides serotype O51 O-antigen oligosaccharide
发明人：YIN JIAN; HU JING; SEEBERGER PETER; QIN CHUNJUN
权利人:UNIV JIANGNAN; MAX PLANCK INST OF COLLOIDS AND INTERFACES
摘要:The present disclosure discloses the chemical synthesis method of the Plesiomonas shigelloides serotype O51 O-antigen oligosaccharide, belonging to the field of chemistry. Source-abundant D-glucose, L-fucose, D-glucosamine and the like are used as raw materials to prepare three glycosylation building blocks, the synthetic route composed of 11 reaction modules is designed, and through the optimization of protecting group and the optimization of the time of introducing functional group, the preparation of the target oligosaccharide chain is successfully achieved. The oligosaccharide chain prepared in the present disclosure has the advantages of cheap and easy-to-get raw materials, and simple and easy-to-repeat preparation method. The present disclosure will have good application prospects in the aspects of development of new drugs and vaccines of Plesiomonas shigelloides , and the like.

专利号:US-9580323-B2
优先权日:2013-05-31
标题 :Method of producing graphene and other carbon materials
发明人：MUKASYAN ALEXANDER; MANUKYAN KHACHATUR
权利人:MUKASYAN ALEXANDER; MANUKYAN KHACHATUR; UNIV NOTRE DAME DU LAC
摘要:The invention provides methods for the combustion synthesis (CS) of graphene by a novel exothermic self-sustained reaction between a refractory ceramic compound and a carbon-containing polymer under an inert gas atmosphere. The synthesis of graphene was confirmed by both transmission electron microscopy and Raman spectroscopy. The graphene produced has very low (<1 wt. %) oxygen content. Fluorocarbon gases released due to decomposition of the carbon-containing polymer in the combustion wave can reduce the ceramic to a gas and mesoporous carbon particles and graphene layers. The method does not require an external energy source because it occurs in a self-sustained synergetic manner after ignition. The methods are flexible in terms of tuning the synthesis conditions for desired products, and the method can be scaled to provide kilogram quantities.

专利号:US-11760707-B2
优先权日:2019-11-13
标题 :Process for the synthesis of 2,3,3,3-tetrafluoropropene
发明人：ZHOU CHANGYUE; WANG YONG
权利人:FUJIAN YONGJING TECH CO LTD
摘要:The present invention pertains to a novel process of manufacturing the compound 2,3,3,3-tetrafluoropropene (1234yf). The compound 1234yf is the newest refrigerant with zero OPD (Ozone Depleting Potential) and zero GWP (Global Warming Potential). Thus, the invention relates to a process, involving a carbene generation route, for the manufacture of the compound 2,3,3,3-tetrafluoropropene (1234yf), of the compound 243db (2,3-dichloro-1,1,1-trifluoropropane), and optionally of the compound 2-chloro-1,1,1-trifluoropropene (1233xf) via carbene route and compound 243db (2,3-dichloro-1,1,1-trifluoropropane). The invention also relates to a process for the manufacture of the compound 2,3,3,3-tetrafluoropropene (1234yf), wherein the compound 243db (2,3-dichloro-1,1,1-trifluoropropane) serves as a starting material, for the manufacture of the compound 2,3,3,3-tetrafluoropropene (1234yf). Further, the invention relates to a process for the manufacture of the compound 2,3,3,3-tetrafluoropropene (1234yf), and of the compound 243db (2,3-dichloro-1,1,1-trifluoropropane), the initial starting materials are selected from the group consisting of com-pound 123 (2,2-dichloro-1,1,1-trifluoroethane), compound 124 (2-chloro-1,1,1,2-tetrafluoroethane), and compound 125 (pentafluoroethane).

专利号:US-8445695-B2
优先权日:2003-10-31
标 题 :Synthesis of phosphono-substituted porphyrin compounds for attachment to metal oxide surfaces
发明人：LINDSEY JONATHAN S; LOEWE ROBERT S; MUTHUKUMARAN KANNAN; AMBROISE AROUNAGUIRY
权利人:LINDSEY JONATHAN S; LOEWE ROBERT S; MUTHUKUMARAN KANNAN; AMBROISE AROUNAGUIRY; UNIV NORTH CAROLINA STATE; ZETTACORE INC
摘要:A method of making a phosphono-substituted dipyrromethane comprises reacting an aldehyde or acetal having at least one phosphono group substituted thereon with pyrrole to produce a phosphono-substituted dipyrromethane; and wherein the phosphono is selected from the group consisting of dialkyl phosphono, diaryl phosphono, and dialkylaryl phosphono. Additional methods, intermediates and products are also described.

专利号:US-8129520-B2
优先权日:2003-06-06
标题 :Methods and intermediates for the synthesis of dipyrrin-substituted porphyrinic macrocycles
发明人：YU LIANHE; MUTHUKUMARAN KANNAN; SREEDHARAN PRATHAPAN; LINDSEY JONATHAN S
权利人:YU LIANHE; MUTHUKUMARAN KANNAN; SREEDHARAN PRATHAPAN; LINDSEY JONATHAN S; UNIV NORTH CAROLINA STATE
摘要:The present invention provides dipyrrin substituted porphyrinic macrocycles, intermediates useful for making the same, and methods of making the same. Such compounds may be used for purposes including the making of molecular memory devices, solar cells and light harvesting arrays.