CAS: 12185-10-3; Phosphorus

上下游产品

phosphoric acid phosphorus trichloride phosphan telluriumphosphoric acid phosphonic Acid phosphan trichlorophosphate

专利信息

专利号:US-2019228842-A1
优先权日:2017-11-17
标 题 :Recipe for the synthesis of metastable structures using topologically assembled precursors
发明人：JENA PURUSOTTAM; FANG HONG
权利人:UNIV VIRGINIA COMMONWEALTH
摘要:Methods of planning and executing the synthesis of metastable materials are provided. Topologically assembled precursors having potential energy surfaces in which the volumes of potential wells of certain local minima are increased are created in silico. The precursor molecules are used to synthesize, e.g. two-dimensional metastable carbon materials such as penta-graphene comprised entirely of pentagons, O-graphene comprised of five- and eight-membered rings, and R-graphene comprised of four-, six- and eight-membered rings.

专利号:EP-3060568-A1
优先权日:2013-10-25
标 题:Method for the synthesis of ethane-1-hydroxy-1,1-diphosphonic acid

专利号:CN-1027257-C
优先权日:1990-03-14
标题 :Continuous process of gas phase catalytic synthesis of oxalate

专利号:SU-1735300-A1
优先权日:1990-01-22
标题 :Method for synthesis of s-trimethylsilyl esters of dithio- or tetrathiophosphoric acids

专利号:US-6583315-B2
优先权日:2000-12-23
标 题:Process for preparing ethanebis(alkylphosphinic) acids
发明人：SICKEN MARTIN; WEFERLING NORBERT; SCHMITZ HANS-PETER
权利人:CLARIANT GMBH
摘要:The invention relates to a process for preparing ethanebis(alkylphosphinic) acids by n a) reacting elemental yellow phosphorus with alkyl halides in the presence of alkali metal hydroxide or of alkaline earth metal hydroxide to give a mixture whose main constituents are the alkali metal salts and/or alkaline earth metal salts of alkylphosphonous, phosphorous, and hypophosphorous acid, n b) liberating alkylphosphonous, phosphorous, and hypophosphorous acid by adding mineral acids, and also at the same time precipitating the alkali metal ions and, respectively, alkaline earth metal ions in the form of their salt of the mineral acids, and then n c) esterifying the alkylphosphonous acid from the mixture of the alkylphosphonous, phosphorous, and hypophosphorous acid, n d) isolating the ester of alkylphosphonous acid from the mixture and hydrolyzing the same to give alkylphosphonous acid, and n e) preparing, from the alkylphosphonous acid, the corresponding ethanebis(alkylphosphinic) acid of the general formula (I) where R 1 and R 2 may be identical or different and are hydrogen, a carboxy group, a carboxylic acid derivative, an unsubstituted or substituted alkyl group having from 1 to 10 carbon atoms, phenyl, benzyl, or alkyl-substituted aromatics, and R 3 and R 4 are identical or different and are an unsubstituted or substituted alkyl group having from 2 to 20 carbon atoms, by free-radical-initiated reaction with alkynes, and also to the use of the ethanebis(alkylphosphinic) acids prepared by this process as starting material for preparing flame retardants and precursors for the synthesis of other phosphorus-containing compounds.

专利号:CN-112028937-A
优先权日:2020-09-03
标 题:A kind of preparation method and preparation system of one-step synthesis of methyl phosphine dichloride