公开(公告)号：EP0647244B2

公开(公告)日：2006-02-01

申请号：EP92918021.4

申请日：1992-07-01

申请人： Borealis Holding A/S

发明人： GUSTAFSSON, Bill ,  MAGNUSSON, Torbjörn ,  ALHA, Kari ,  RYDIN, Peter

IPC分类号： C08F210/18

CPC分类号： C08F210/02 ,  C08F210/18 ,  C08F218/08 ,  C08F2500/12 ,  C08F220/18 ,  C08F236/20

摘要： The invention concerns an unsaturated ethylene copolymer, a method for producing the ethylene copolymer, and the use of the ethylene copolymer in compositions for producing cross-linked structures, such as material for electric cables. In the method, ethylene and at least one monomer which is copolymerisable with ethylene and includes a polyunsaturated comonomer having a chain of at least 8 carbon atoms and at least 2 non-conjugated double bonds, of which at least one is terminal, are polymerised at a pressure of about 100-300 MPa and a temperature of about 80-300°C under the action of a radical initiator. The polyunsaturated comonomer preferably is an α,φ-alkadiene having 8-16 carbon atoms, most preferred 1,9-decadiene. Apart from the polyunsaturated comonomer, polymerisation may also involve another vinyl-unsaturated monomer, preferably containing at least one functional group selected from hydroxyl groups, alkoxy groups, carbonyl groups, carboxyl groups and ester groups. The ethylene copolymers produced have an increased degree of unsaturation, which can be used for cross-linking the ethylene copolymer or grafting reactive groups.

公开(公告)号：EP0647244B1

公开(公告)日：1996-12-04

申请号：EP92918021.4

申请日：1992-07-01

申请人： Borealis Holding A/S

发明人： GUSTAFSSON, Bill ,  MAGNUSSON, Torbjörn ,  ALHA, Kari ,  RYDIN, Peter

IPC分类号： C08F210/18

CPC分类号： C08F210/02 ,  C08F210/18 ,  C08F218/08 ,  C08F2500/12 ,  C08F220/18 ,  C08F236/20

摘要： The invention concerns an unsaturated ethylene copolymer, a method for producing the ethylene copolymer, and the use of the ethylene copolymer in compositions for producing cross-linked structures, such as material for electric cables. In the method, ethylene and at least one monomer which is copolymerisable with ethylene and includes a polyunsaturated comonomer having a chain of at least 8 carbon atoms and at least 2 non-conjugated double bonds, of which at least one is terminal, are polymerised at a pressure of about 100-300 MPa and a temperature of about 80-300°C under the action of a radical initiator. The polyunsaturated comonomer preferably is an α,φ-alkadiene having 8-16 carbon atoms, most preferred 1,9-decadiene. Apart from the polyunsaturated comonomer, polymerisation may also involve another vinyl-unsaturated monomer, preferably containing at least one functional group selected from hydroxyl groups, alkoxy groups, carbonyl groups, carboxyl groups and ester groups. The ethylene copolymers produced have an increased degree of unsaturation, which can be used for cross-linking the ethylene copolymer or grafting reactive groups.