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1.发明授权
公开(公告)号：EP1899389B1
公开(公告)日：2009-06-17
申请号：EP06724096.0
申请日：2006-04-06
IPC分类号： C08F136/06 , C08F4/54
CPC分类号： C08F136/06 , C08F136/08 , C08F4/545
摘要： The invention concerns a method for preparing a diene elastomer. The invention is applicable in particular for obtaining a polybutadiene with a high proportion of cis-1,4 sequences having both a Mooney viscosity (ML1+4) not less than 40, a polydispersity index less than 2.1 and a reduced cold creep and a polyisoprene. The inventive method includes reacting a catalytic system with at least one conjugated diene monomer, said catalytic system being based on at least: one conjugated diene, one or more rare earth metal salts of an organic phosphoric acid, said salt being suspended in at least one inert and saturated hydrocarbon solvent of aliphatic or alicyclic type, an alkylating agent consisting of an alkylaluminium of formula AIR3 or HAIR2, and a halogen donor belonging to the family of alkylaluminium halides, excluding alkylaluminium sesquihalides. Said method includes offset contacting of the monomer(s) to be polymerized with at least one alkylaluminium compound of formula AIR3 or HAIR2 which is identical or not to the alkylating agent of said catalytic system, said amount being selected based on the characteristics of the polymerization medium and/or polymerization conditions and/or said elastomer to be obtained.
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2.发明公开PROCEDE D'OBTENTION D'UN HOMOPOLYMERE DU BUTADIENE EN PRESENCE DE MONO-OLEFINE(S) A 4 ATOMES DE CARBONE 审中-公开用于生产丁二烯HOMO聚合物中4碳原子上MONO烯烃的存在
公开(公告)号：EP1565501A1
公开(公告)日：2005-08-24
申请号：EP03767562.6
申请日：2003-11-17
IPC分类号： C08F36/06 , C08F136/06
CPC分类号： C08F136/06
摘要： The invention concerns a method for obtaining a 1,3-butadiene homopolymer which consists in reacting a catalytic system in the presence of 1,3-butadiene and one or more mono-olefin(s) of 4 carbon atoms. The invention is characterized in that said catalytic system is based on at least: one conjugate diene monomer, one salt of one or more rare earth metals of an organic phosphoric acid, said salt being suspended in at least a saturated, inert hydrocarbon solvent of the aliphatic or alicyclic type, an alkylating agent consisting of alkylaluminium of formula AlR3 or HalR2, wherein R is an alkyl group, and a halogen donor consisting of alkylaluminium halide.
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3.发明公开
公开(公告)号：EP1899389A1
公开(公告)日：2008-03-19
申请号：EP06724096.0
申请日：2006-04-06
IPC分类号： C08F136/06 , C08F4/54
CPC分类号： C08F136/06 , C08F136/08 , C08F4/545
摘要： The invention concerns a method for preparing a diene elastomer. The invention is applicable in particular for obtaining a polybutadiene with a high proportion of cis-1,4 sequences having both a Mooney viscosity (ML1+4) not less than 40, a polydispersity index less than 2.1 and a reduced cold creep and a polyisoprene. The inventive method includes reacting a catalytic system with at least one conjugated diene monomer, said catalytic system being based on at least: one conjugated diene, one or more rare earth metal salts of an organic phosphoric acid, said salt being suspended in at least one inert and saturated hydrocarbon solvent of aliphatic or alicyclic type, an alkylating agent consisting of an alkylaluminium of formula AIR3 or HAIR2, and a halogen donor belonging to the family of alkylaluminium halides, excluding alkylaluminium sesquihalides. Said method includes offset contacting of the monomer(s) to be polymerized with at least one alkylaluminium compound of formula AIR3 or HAIR2 which is identical or not to the alkylating agent of said catalytic system, said amount being selected based on the characteristics of the polymerization medium and/or polymerization conditions and/or said elastomer to be obtained.
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