CAS: 6994-59-8; Tin(Ii) Stearate

专利信息

专利号:US-6174956-B1
优先权日:1995-06-02
标题 :Synthesis of condensation polymers in densified fluids
发明人：KERSCHNER JUDITH LYNNE; JURELLER SHARON HARRIOTT; THOMAIDES JOHN SOCRATES; HUMPHREYS ROBERT WILLIAM; IOVINE CARMINE PHILLIP
权利人:NAT STARCH CHEM INVEST
摘要:A polyurethane polymer and method of preparing it is described. The process requires the combination of a soluble polyol with a di- or polyisocyanate under densified fluid conditions. The process to prepare a waterborne polyurethane involves the utilization of a polyol containing ionic or latent ionic groups which must undergo preneutralization before combining with the di- or polyisocyanate under densified fluid conditions. The resulting polyurethane is substantially free of an organic solvent.

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-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:EP-1307465-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

专利号:EP-1307465-A1
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