Invention Grant
US08664344B2 Process for the preparation of branched polybutadiene with a high content of 1,4-cis units
有权
制备具有高含量1,4-顺式单元的支化聚丁二烯的方法
- Patent Title: Process for the preparation of branched polybutadiene with a high content of 1,4-cis units
- Patent Title (中): 制备具有高含量1,4-顺式单元的支化聚丁二烯的方法
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Application No.: US12935780Application Date: 2009-03-19
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Publication No.: US08664344B2Publication Date: 2014-03-04
- Inventor: Gian Tommaso Viola , Marianna Zinna
- Applicant: Gian Tommaso Viola , Marianna Zinna
- Applicant Address: IT San Donato Milanese
- Assignee: Polimeri Europa S.p.A.
- Current Assignee: Polimeri Europa S.p.A.
- Current Assignee Address: IT San Donato Milanese
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: ITMI2008A0570 20080402
- International Application: PCT/EP2009/002218 WO 20090319
- International Announcement: WO2009/121516 WO 20091008
- Main IPC: C08F4/44
- IPC: C08F4/44 ; C08F4/52 ; C08F36/06
Abstract:
Process for the preparation of polybutadiene effected by the polymerization of butadiene in an aliphatic and/or cyclo-aliphatic solvent in the presence of a catalytic system prepared in situ which comprises: (i) a carboxylate of neodymium soluble in the process solvent containing a variable quantity of water, the H2O/Nd molar ratio ranging from 0.001/1 to 0.50/1; (ii) an alkyl compound of aluminum; (iii) an alkyl compound of aluminum in which at least one bond of Al consists of an Al—Cl bond; The total Al/Nd molar ratio ranging from 4/1 to 12/1, and the Cl/Nd molar ratio ranging from 2/1 to 6/1.
Public/Granted literature
- US20110112261A1 PROCESS FOR THE PREPARATION OF BRANCHED POLYBUTADIENE WITH A HIGH CONTENT OF 1,4-CIS UNITS Public/Granted day:2011-05-12
Information query
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