CAS: 5970-45-6; Zinc (Acetate Dihydrate)

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5990-32-9 546-46-3 6046-93-1

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专利信息

专利号:US-2004127467-A1
优先权日:2002-04-17
标 题:Synthesis of pancratistatin prodrugs
发明人：PETTIT GEORGE R; ORR BRIAN; DUCKI SYLVIE
摘要:A new and efficient synthesis of the (+)-pancratistatin phosphate prodrug 2 a has been accomplished. Selective protection (tetraacetate 4 ) of (+)-pancratistatin ( 1 a ) was followed by phosphorylation (to 5 ) with dibenzyl chlorophosphite (prepared in situ from dibenzyl phosphite). Cleavage of the acetate (with sodium methoxide) and benzyl (by hydrogenolysis) protecting groups followed by concomitant reaction with two equivalents of sodium methoxide afforded good yield of disodium (+)-pancratistatin phosphate ( 2 a ). Further increases in yields of the prodrug ( 2 a ) were realized by avoiding heat in the final purification steps. Fourteen ( 2 b - o ) additional metal and ammonium derived phosphate prodrugs were also synthesized.

专利号:US-5869543-A
优先权日:1996-10-22
标题:Process for the synthesis of polyethylene carboxylate from polyethylene carboxylate waste
发明人：BOOS FRANK; SCHNITTKER NORMAN; SEELIG JOACHIM
权利人:ZIMMER AG
摘要:The invention comprises a method for synthesizing polyethylene terephthalate from waste polyethylene terephthalate by cleavage with ethylene glycol and separation of bis(hydroxyethylene) terephthalate from the cleavage mixture with a specific temperature program, recrystallization from water, and esterification and polycondensation with the addition of terephthalic acid. n The invention further comprises a method for synthesis of polyethylene naphthalate from waste polyethylene naphthalate in a similar manner.

专利号:US-10059902-B2
优先权日:2015-02-14
标题:Process for in situ synthesis of dispersion ZnO nanoparticles in oil
发明人：VIJAYARAJ Munusamy; HAIT SAMIK KUMAR; SASTRY MADHIRA INDU SEKHARA; RAMAKUMAR Sankara Sri Venkata
权利人:INDIAN OIL CORP LTD
摘要:The present invention relates to a process for synthesizing dispersion of ZnO nanoparticles in an oil medium. Particularly, the invention relates to a process for in-situ synthesis of dispersion of ZnO nanoparticles in oil medium. Additionally, the present invention relates to a lubricant oil composition, wherein the composition comprises a base oil, a dispersant and the dispersion of ZnO as obtained by the process of the present invention.

专利号:US-6603070-B2
优先权日:2000-07-21
标题 :Convergent synthesis of multiporphyrin light-harvesting rods
发明人：LINDSEY JONATHAN S; LOEWE ROBERT S
权利人:UNIV NORTH CAROLINA STATE
摘要:The present invention provides a convergent method for the synthesis of light harvesting rods. The rods are oligomers of the formula A 1 (A b+1 ) b , wherein b is at least 1, A 1 through A b+1 are covalently coupled rod segments, and each rod segment A 1 through A 1+b comprises a compound of the formula X 1 (X m+1 ) m wherein m is at least 1 and X 1 through X m+1 are covalently coupled porphyrinic macrocycles. Light harvesting arrays and solar cells containing such light harvesting rods are also described, along with intermediates useful in such methods and rods produced by such methods.

专利号:US-5905136-A
优先权日:1994-12-21
标 题 :Polycondensation catalyzers for the synthesis of polyethylene terephtalate
发明人：PO RICCARDO; PELOSINI LUIGI
权利人:MONTEFIBRE SPA; INCA INTERNATIONAL SPA
摘要:PCT No. PCT/EP95/04883 Sec. 371 Date Jun. 19, 1997 Sec. 102(e) Date Jun. 19, 1997 PCT Filed Dec. 6, 1995 PCT Pub. No. WO96/19518 PCT Pub. Date Jun. 27, 1996The subject is a class of catalyzers to be used in the stage of polycondensation of the synthesis of poly(ethylene terephtalate), consisting of metal and non-metal derivatives in composition with sulfonic acids mixed with titanium compounds so that the final polymer contains a sulfur quantity of 5-60 ppm and a quantity of metals between 2 and 100 ppm.

专利号:US-10633609-B2
优先权日:2017-05-16
标题 :Process for in-situ synthesis of dispersion ZnO—TiO2 nanoparticles in oil
发明人：VIJAYARAJ Munusamy; HAIT SAMIK KUMAR; SASTRY MADHIRA INDU SEKHARA; RAMAKUMAR Sankara Sri Venkata
权利人:INDIAN OIL CORP LTD
摘要:The present invention provides a process for in situ synthesis of dispersion of ZnO and TiO 2 nanoparticles in an oil medium, wherein the process comprises: (a) providing layered basic zinc hydroxide (LBZ) in an oil medium, containing a dispersant, (b) providing a titanium precursor in the oil medium to obtain a mixture, (c) hydrolyzing the mixture to obtain a suspension, and (d) decomposing the suspension to obtain a dispersion of mixture of ZnO and TiO 2 nanoparticles. The present invention also provides an oil dispersion comprising dispersant stabilized mixture of zinc oxide and titanium dioxide nanoparticles were synthesized through this process. The dispersion contains up to 2.5 Wt % metals loading balanced with dispersant and base oil or dispersant alone. Addition of this dispersion to oil of lubricating viscosity improves the anti-wear property and resulting a low SAPS formulation.