发明申请
US20130333832A1 PROCESS FOR PREPARING ETHYLENE HOMOPOLYMERS OR COPOLYMERS IN A TUBULAR REACTOR WITH AT LEAST TWO REACTION ZONES HAVING DIFFERENT CONCENTRATIONS OF CHAIN TRANSFER AGENT
审中-公开
在具有链转移剂不同浓度的至少两个反应区的管状反应器中制备乙烯共聚物或共聚物的方法
- 专利标题： PROCESS FOR PREPARING ETHYLENE HOMOPOLYMERS OR COPOLYMERS IN A TUBULAR REACTOR WITH AT LEAST TWO REACTION ZONES HAVING DIFFERENT CONCENTRATIONS OF CHAIN TRANSFER AGENT
- 专利标题（中）： 在具有链转移剂不同浓度的至少两个反应区的管状反应器中制备乙烯共聚物或共聚物的方法
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申请号： US14002242申请日： 2012-03-01
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公开(公告)号： US20130333832A1公开(公告)日： 2013-12-19
- 发明人: Iakovos Vittorias , Barbara Gall , Sebastian Weiand , Andrei Gonioukh , Stephan Schmitz , Klaus Berhalter , Gerd Mannebach , Markus Busch , Thomas Herrmann
- 申请人： Iakovos Vittorias , Barbara Gall , Sebastian Weiand , Andrei Gonioukh , Stephan Schmitz , Klaus Berhalter , Gerd Mannebach , Markus Busch , Thomas Herrmann
- 申请人地址： DE Wesseling
- 专利权人： Basell Polyolefine GmbH
- 当前专利权人： Basell Polyolefine GmbH
- 当前专利权人地址： DE Wesseling
- 优先权： EP11001770.4 20110303
- 国际申请： PCT/EP2012/053484 WO 20120301
- 主分类号： C08F2/38
- IPC分类号： C08F2/38
摘要：
Process for preparing ethylene homopolymers or copolymers in the presence of free-radical polymerization initiator and at least one chain transfer agent at pressures in the range of from 110 MPa to 350 MPa and temperatures in the range of from 100° C. to 350° C. in a tubular reactor with at least two reaction zones having different concentrations of the chain transfer agent, wherein the concentration of the chain transfer agent in the first reaction zone is less than 70% of the concentration of the chain transfer agent in the reaction zone with the highest concentration of the chain transfer agent, ethylene homopolymers or copolymers obtainable by such a process, the use of the ethylene homopolymers or copolymers for extrusion coating and a process for extrusion coating a substrate selected from the group consisting of paper, paperboard, polymeric film, and metal, with such ethylene homopolymers or copolymers.
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