CAS: 73227-23-3; 2-Ethylhexanoate,Neodymium(3+)

专利信息

专利号:US-6184168-B1
优先权日:1997-09-22
标题:Synthesis of 1,4-trans-polybutadiene using a lanthanide organic acid salt catalyst
发明人：LYNCH THOMAS J
权利人:BRIDGESTONE CORP
摘要:The invention provides a catalyst composition, comprising: (a) an organolithium compound; and, (b) an organic acid salt of lanthanide series element; wherein: (1) only components (a) and (b) are required to promote the synthesis of 1,4-trans-polybutadiene; (2) the ratio of component (a) to component (b) is selected to maximize formation of the trans structure of said 1,4-trans-polybutadiene; and, (3) components (a) and (b) are selected for enabling further diblock synthesis. The invention further contemplates a process for using the catalyst to synthesize 1,4-trans-polybutadiene and other polymers and copolymers having trans configuration in the conjugated diene monomer contributed units.

专利号:US-6780948-B2
优先权日:2002-03-28
标题 :Synthesis of polyisoprene with neodymium catalyst
发明人：RACHITA MICHAEL JOSEPH; XU ZHENGFANG; WONG TANG
权利人:GOODYEAR TIRE & RUBBER
摘要:The neodymium catalyst system prepared by the technique of this invention can be used in the polymerization of isoprene monomer into polyisoprene rubber that is clear (transparent) and of high purity. This invention more specifically discloses a process for the synthesis of polyisoprene rubber which comprises polymerizing isoprene monomer in the presence of a neodymium catalyst system, wherein the neodymium catalyst system is prepared by (1) reacting a neodymium carboxylate with an organoaluminum compound in the presence of isoprene for a period of about 10 minutes to about 30 minutes to produce neodymium-aluminum catalyst component, and (2) subsequently reacting the neodymium-aluminum catalyst component with a dialkyl aluminum chloride for a period of at least 30 minutes to produce the neodymium catalyst system.

专利号:US-8933181-B2
优先权日:2006-10-06
标题:Branched polymers and methods for their synthesis and use
发明人：MOURI HIROSHI; LUO STEVEN; KURASCH JESSICA; ROBERTSON CHRISTOPHER G; WARREN SANDRA
权利人:MOURI HIROSHI; LUO STEVEN; KURASCH JESSICA; ROBERTSON CHRISTOPHER G; WARREN SANDRA; BRIDGESTONE CORP
摘要:Branched polymers including multi-branched polymers, functionalized branched polymers, star-branched polymers, and dendigraft polymers. Methods for the synthesis of branched polymers and method for the use of branched polymers in tire components are also included.

专利号:US-2023250208-A1
优先权日:2019-12-20
标 题:Synthesis of isoprene-butadiene copolymer rubbers
发明人：SPILKER THOMAS FRANKLIN
权利人:GOODYEAR TIRE & RUBBER
摘要:It has been unexpectedly found that certain neodymium catalyst systems can be used to copolymerize isoprene and 1,3-butadiene to produce random isoprene-butadiene copolymer rubbers which are not tapered. These random isoprene-butadiene copolymer rubbers have properties which are beneficial for use in rubber formulations for manufacturing a wide variety of rubber products, such as tires, hoses, conveyor belts, power transmission belts, and shoe soles. These random isoprene-butadiene rubbers are synthesized by copolymerizing (a) isoprene monomer or a substituted isoprene monomer and (b) 1,3-butadiene monomer in the presence of a neodymium catalyst system, wherein the neodymium catalyst system is prepared by (1) reacting a neodymium carboxylate with an organoaluminum compound in the presence of a conjugated diolefin monomer to produce neodymium-aluminum catalyst component, and (2) subsequently reacting the neodymium-aluminum catalyst component with an alkyl aluminum chloride to produce the neodymium catalyst system.

专利号:US-11597790-B2
优先权日:2019-12-20
标 题 :Synthesis of isoprene-butadiene copolymer rubbers
发明人：SPILKER THOMAS FRANKLIN
权利人:GOODYEAR TIRE & RUBBER
摘要:It has been unexpectedly found that certain neodymium catalyst systems can be used to copolymerize isoprene and 1,3-butadiene to produce random isoprene-butadiene copolymer rubbers which are not tapered. These random isoprene-butadiene copolymer rubbers have properties which are beneficial for use in rubber formulations for manufacturing a wide variety of rubber products, such as tires, hoses, conveyor belts, power transmission belts, and shoe soles. These random isoprene-butadiene rubbers are synthesized by copolymerizing (a) isoprene monomer or a substituted isoprene monomer and (b) 1,3-butadiene monomer in the presence of a neodymium catalyst system, wherein the neodymium catalyst system is prepared by (1) reacting a neodymium carboxylate with an organoaluminum compound in the presence of a conjugated diolefin monomer to produce neodymium-aluminum catalyst component, and (2) subsequently reacting the neodymium-aluminum catalyst component with an alkyl aluminum chloride to produce the neodymium catalyst system.

专利号:US-8188304-B2
优先权日:2006-03-31
标 题:Process for the purification of lanthanide carboxylates
发明人：BIAGINI PAOLO; SALVALAGGIO MARIO; CAMBISI FRANCO; BONOLDI LUCIA; GILA LILIANA
权利人:BIAGINI PAOLO; SALVALAGGIO MARIO; CAMBISI FRANCO; BONOLDI LUCIA; GILA LILIANA; POLIMERI EUROPA SPA
摘要:A process is described for the purification of lanthanide carboxylates which comprises a step in which the hydrocarbon solution deriving from the synthesis of lanthanide carboxylate, containing said carboxylate and impurities of the corresponding carboxylic acid and/or water, is treated with an aqueous solution of a base in order to obtain a pH of the aqueous phase ranging from 9.0 to 12.2 and/or a step in which the hydrocarbon solution containing lanthanide carboxylate is treated with a solid selected from Na 2 SO 4 , MgSO 4 , Mg(ClO 4 ) 2 , molecular sieves 3 â„«, molecular sieves 4 â„«, molecular sieves 5 â„« and molecular sieves 13 X. Analytical methods are also described, which allow the purity of the lanthanide carboxylates to be non-destructively measured.