CAS: 1912-84-1; 9-Octadecenoic Acid (9Z)-, Tin(2+) Salt (2:1)

专利信息

专利号:US-6303808-B1
优先权日:2000-08-10
标题:Direct synthesis of tin (II) carboxylates and tin(IV) carboxylates from elemental tin or tin oxides
发明人：KNEZEVIC VASILIJE; BRECKER LAWRENCE R; FISCH MICHAEL; KLEINLAUTH PHILIP J; BACALOGU RADU
权利人:CROMPTON CORP
摘要:A process for making a product containing tin (II) carboxylates of the formula (RCOO) 2−n (OOCR′) n , where each R, which may be the same or different, is hydrogen or a C 1 -C 40 hydrocarbyl group, each R′, which may be the same or different, is a C 1 -C 40 hydrocarbyl group, and n is 0, 1, or 2 the process comprising: n (a) forming a reaction mixture by combining elemental tin, a promoter, and one or more carboxylate-containing compounds of the formula R(CO)X, where R is hydrogen or a C 1 -C 40 hydrocarbyl group and X is a hydroxyl group, a halogen atom, or O(CO)R′, where R′ is a C 1 -C 40 hydrocarbyl group; n (b) heating the reaction mixture to form heated reaction mixture; n (c) oxidizing the heated reaction mixture using an oxygen-containing gas to form an oxidized reaction mixture containing tin (II) carboxylates as well as tin (IV) carboxylates; and n (d) reducing the oxidized reaction mixture with elemental tin to convert at least a portion of the tin (IV) carboxylates to tin (II) carboxylates to form the product containing tin (II) carboxylates.

专利号:US-2018312623-A1
优先权日:2017-04-28
标题 :Polyurethane Elastomer with High Ultimate Elongation
发明人：WANG LIANG; WANG VIKTORIA
权利人:WANG LIANG; WANG VIKTORIA
摘要:The present invention relates to polyurethane-urea elastomers with exceptional mechanical properties and enhanced elasticity based on molecular structure analysis. The present invention involves the synthesis of a polyurethane-urea elastomer using a combination of commercially available materials: (1) polyols with ultralow unsaturation and narrow polydispersity, (2) diisocyanates with symmetric steric conformation, and (3) bulky diamines between functional groups. The preparation method for the novel polyurethane-urea is disclosed. The subject elastomers have the highest reported elongation-at-break among known polyurethane elastomers.

专利号:US-11945775-B2
优先权日:2018-12-21
标题:Stable dispersant and application thereof in preparing copolymer polyols
发明人：LI FUGUO; LIU YANG; JU CHANGXUN; LIU BIN; QIN CHENGQUN; WU XUNKUN; LI JING; ZHENG BING; WANG LUNPENG
权利人:WANHUA CHEMICAL GROUP CO LTD
摘要:A stable dispersant and an application thereof in preparing copolymer polyols, the preparation method for the stable dispersant including the steps of 1) contacting a polyol with a dianhydride compound for reaction so as to prepare an adduct; 2) performing a ring-opening addition reaction on the adduct obtained in step 1) and an epoxy compound to prepare a stable dispersant; the dianhydride compound does not contain a double bond that may copolymerize with an olefinically unsaturated monomer, while the epoxy compound contains a double bond that may copolymerize with an olefinically unsaturated monomer, the polyol is a polyester polyol and/or a polyether polyol, preferably being a polyether polyol. The stable dispersant obtained by means of the described preparation method has a multi-active site anchoring function, and is applied to the synthesis of copolymer polyols to obtain copolymer polyols having relatively uniform particle size.

专利号:US-8106150-B2
优先权日:2008-05-27
标 题:Polylactide manufacturing apparatus and method for manufacturing polylactide
发明人：OKA KENICHIRO; MATSUO TOSHIAKI; KAMIKAWA MASAYUKI; OKAMOTO NARUYASU
权利人:OKA KENICHIRO; MATSUO TOSHIAKI; KAMIKAWA MASAYUKI; OKAMOTO NARUYASU; HITACHI PLANT TECHNOLOGIES LTD
摘要:In a process of manufacturing polylactide, synthesis of high-quality polymers is achieved with a sufficient degree of vacuum secured. Provided is an apparatus for manufacturing polylactide which includes the steps of preparing lactide through oligomerization of lactic acid and depolymerization of the resulting oligomers, effecting ring-opening polymerization of the lactide, and removing unreacted lactide. The apparatus comprises an exhausting gas treatment device for reducing pressure in the step of removing unreacted lactide. The exhausting gas treatment device includes boilers ( 81 - 83 ) for generating water vapor; a pressure-reducing section having stages each including an ejector ( 71 - 73 ) driven with the water vapor, a condenser ( 61 - 63 ) connected downstream of the ejector, and a hot well tank ( 41 - 43 ) connected to the condenser; and a main condenser 60 and a main hot well tank 40 connected to the main condenser that are disposed on a pipe line through which a gas of the unreacted lactide is suctioned into the pressure-reducing section. The gas of the unreacted lactide is washed away in the main condenser using a liquid containing lactic acid as a main component that has been collected in the main hot well tank.

专利号:US-2005222379-A1
优先权日:2004-03-10
标题:Method and apparatus for synthesis of lactide

专利号:US-11780954-B2
优先权日:2018-12-26
标题 :Modified polyether polyol and use thereof in polyurethane foam materials
发明人：LI FUGUO; LIU YANG; JU CHANGXUN; JIANG NAIHUA; LIU BIN; QIN CHENGQUN; WANG LUNPENG
权利人:WANHUA CHEMICAL GROUP CO LTD
摘要:Provided are a modified polyether polyol and the use thereof in polyurethane foam materials. The method for preparing a modified polyether polyol comprises the following steps: 1) reacting a compound A with a polyether polyol, wherein the compound A is an anhydride and/or dicarboxylic acid compound containing a polymerizable double bond, preferably selected from one or two of maleic anhydride and itaconic anhydride, preferably maleic anhydride; and 2) reacting the product obtained in step 1) with an epoxy compound containing a polymerizable double bond in the presence of a catalyst, in order to prepare the modified polyether polyol. The modified polyether polyol obtained by means of the preparation method has more active sites, uses the polymerizable double bond for blocking, is used as a dispersion stabilizer for the synthesis of copolymer polyols, and has the characteristics of a better dispersion stability, filterability and a low viscosity.