CAS: 71205-22-6; Silicic Acid, Aluminum Magnesium Salt Hydrate

专利信息

专利号:US-8084384-B2
优先权日:2008-10-03
标题 :Magnesium aluminosilicate clays—synthesis and catalysis
发明人：KUPERMAN ALEXANDER E; MAESEN THEODORUS; DYKSTRA DENNIS; UCKUNG IBRAHIM J
权利人:KUPERMAN ALEXANDER E; MAESEN THEODORUS; DYKSTRA DENNIS; UCKUNG IBRAHIM J; CHEVRON USA INC
摘要:This invention is directed to a synthesis process for preparing magnesium aluminosilicate clays and to the products of said process. Briefly, a silicon component, an aluminum component, and a magnesium component are combined, under aqueous conditions and at an acidic pH, to form a first reaction mixture and subsequently the pH of the first reaction mixture is adjusted to greater than 7.5 to form a second reaction mixture. The second reaction mixture is allowed to react under conditions sufficient to form the magnesium aluminosilicate clay of the present invention. The invention is also directed to catalyst compositions comprising the magnesium aluminosilicate clays synthesized according to the process of the invention. The resulting magnesium aluminosilicate clay can be used as a catalyst or as a component in catalyst compositions. The invention is further directed to a magnesium aluminosilicate clay with a characteristic 29 Si NMR spectrum and the use of said magnesium aluminosilicate clay in catalyst compositions.

专利号:US-6410523-B1
优先权日:1998-04-10
标题:Vitamin D derivatives substituted at the 2beta-position
发明人：WATANABE HIROYOSHI
权利人:CHUGAI PHARMACEUTICAL CO LTD
摘要:The present invention provides a vitamin D derivative of the general formula (I):wherein A denotes a straight chain or branched chain alkylene group with 2 to 10 carbon atoms and R denotes SO3R1 in which R1 represents a hydrogen atom or a straight chain or branched chain alkyl group with 1 to 3 carbon atoms or COOR2 in which R2 represents a hydrogen atom or a straight chain or branched chain alkyl group with 1 to 3 carbon atoms; an intermediate compound for synthesis of the vitamin D derivative; and a pharmaceutical composition containing the vitamin D derivative as an active ingredient. The compound of the invention has affinity for a vitamin D receptor and a vitamin D binding protein, and is useful as a drug, such as a drug for treatment of diseases due to abnormal of calcium metabolism. The compound is considered to be a metabolite of a vitamin D derivative having a substituent at the 2beta-position, especially, 2beta-(3-hydroxypropoxy)-1alpha,25-dihydroxyvitamin D3. This compound can advantageously be used as an authentic sample to identify the derivative.

专利号:KR-20180053294-A
优先权日:2015-06-29
标 题 :Total Synthesis of Cissy Mythin A and Analogs Thereof

专利号:JP-S6241738-A
优先权日:1985-08-13
标题:Synthesis of gas phase sedimented oxidated product

专利号:SI-23746-A
优先权日:2011-05-26
标题:SYNTHESIS OF COATING COMPOSITE ABSORBER OF ELECTROMAGNETIC RADIATION BASED ON CERAMIC FERITOMATERS

专利号:US-4604118-A
优先权日:1985-08-13
标 题 :Method for synthesizing MgO--Al2 O3 --SiO2 glasses and ceramics
发明人：BOCKO PETER L; WEIN WILLIAM J; YOUNG CHARLES E
权利人:CORNING GLASS WORKS
摘要:A vapor phase method for the synthesis of MgO-Al2O3-SiO2 products, including MgO-Al2O3-SiO2 glasses of optical quality, wherein SiCl4, aluminum halide, and organometallic magnesium vapors are oxidized by flame oxidation and the oxides collected and sintered to glass or ceramic products, is described. A added shield gas stream is provided during flame oxidation of the vapors to reduce or prevent MgCl2 by-product formation at the burner and in the product.