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    A METHOD FOR THE PREPARATION OF AN UNSATURATED ETHYLENE COPOLYMER
    61.
    发明授权
    A METHOD FOR THE PREPARATION OF AN UNSATURATED ETHYLENE COPOLYMER 失效
    用于生产不饱和乙烯共聚物的方法

    公开(公告)号：EP0738287B1

    公开(公告)日：1998-05-06

    申请号：EP94902146.3

    申请日：1993-11-03

    申请人： Borealis Holding A/S

    发明人： GUSTAFSSON, Bill ,  THORN, Lars ,  WAHLSTRÖM, Anders ,  PALMLÖF, Magnus

    IPC分类号： C08F4/24 ,  C08F210/18

    CPC分类号： C08F210/18 ,  C08F210/02 ,  C08F4/22 ,  C08F236/20 ,  C08F2500/12 ,  C08F2500/07 ,  C08F210/08

    摘要： An unsaturated ethylene polymer and a method for the preparation thereof are disclosed. The unsaturated ethylene polymer is prepared by low-pressure polymerisation of ethylene and at least one monomer which is copolymerisable therewith and includes a polyunsaturated comonomer having 8-14 carbon atoms and at least two non-conjugated double bonds, of which at least one is terminal. Conveniently, the polyunsaturated comonomer is an α,φ-alkadiene, preferably 1,9-decadiene. A vinylically unsaturated monomer, preferably 1-butene, may additionally be added in the polymerisation. Polymerisation is performed by means of a chromium catalyst which is based on chromium trioxide or chromate and is supported by a carrier, such as silica, and which is unmodified or modified by titanation or fluoridation.

    Process for the preparation of ethylene-propylene copolymers
    64.
    发明公开
    Process for the preparation of ethylene-propylene copolymers 失效
    Verfahren zur Herstellung von Ethylen-Propylen-Copolymeren

    公开(公告)号：EP0751155A2

    公开(公告)日：1997-01-02

    申请号：EP96107090.1

    申请日：1996-05-06

    申请人： ENICHEM ELASTOMERI S.r.l.

    发明人： Tanaglia, Tiziano

    IPC分类号： C08F210/16 ,  C08F210/18 ,  C08F2/14 ,  C08F4/68

    CPC分类号： C08F10/00 ,  C08F210/16 ,  C08F210/18 ,  Y10S526/904 ,  Y10S526/905 ,  C08F4/6292 ,  C08F4/68 ,  C08F210/06 ,  C08F2500/17 ,  C08F2500/25

    摘要： Process for the polymerization of ethylene with C 3 -C 10 alpha-olefins in suspension of liquid monomer in the presence of a catalyst containing Vanadium obtained by the precipitation, in an atmosphere of ethylene or alpha-olefins, of:

    a) a compound of Vanadium in the oxidation state of 3 to 5, with
    b) a basically hydrocarbon solution of a compound selected from those having general formula R n AlX m wherein R is a C 1 -C 20 alkyl radical, X is a halogen, m+n = 3 , n is an integer from 0 to 2.

    摘要翻译： 在含有钒的催化剂存在下，在乙烯或α-烯烃气氛中沉淀出的液体单体悬浮液中乙烯与C 3 -C 10α-烯烃的聚合方法为：a）将钒的化合物 氧化态为3〜5，b）选自具有通式RnAlXm的化合物的基本烃溶液，其中R为C1-C20烷基，X为卤素，m + n = 3，n为整数 从0到2。

    UNSATURATED ETHYLENE - NON CONJUGATED DIENE COPOLYMERS AND PREPARATION THEREOF BY RADICAL POLYMERIZATION
    65.
    发明授权
    UNSATURATED ETHYLENE - NON CONJUGATED DIENE COPOLYMERS AND PREPARATION THEREOF BY RADICAL POLYMERIZATION 失效
    不饱和乙烯 - 非共轭二烯共聚物和它们的生产通过自由基聚合

    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.

    Rubber composition
    66.
    发明公开
    Rubber composition 失效
    橡胶组成

    公开(公告)号：EP0722982A1

    公开(公告)日：1996-07-24

    申请号：EP96300101.1

    申请日：1996-01-04

    申请人： JAPAN SYNTHETIC RUBBER CO., LTD.

    发明人： Kawata, Takashi ,  Tsuji, Shoei ,  Mori, Yoji

    IPC分类号： C08L23/16 ,  C08F210/18

    CPC分类号： C08F210/18 ,  C08K3/04 ,  C08K3/06 ,  C08K3/22 ,  C08K5/09 ,  C08L23/10 ,  C08L23/16 ,  C08L91/00 ,  C08L2312/00 ,  C08F2500/17 ,  C08F2500/21

    摘要： A rubber composition excellent in shape-retainability also in processibility, compression set and the like, which comprises a single ethylene-α-olefin-non-conjugated diene copolymer which has (1) a Mooney viscosity (ML 1+4 , 100°C) of 80 to 200, (2) a weight average molecular weight/number average molecular weight ratio of 6 or more as measured by a gel permeation chromatography (GPC), and (3) a stress-retention of 0.2 or more after 100 seconds at 80°C in a compression type stress-relaxation test.

    摘要翻译： （1）门尼粘度（ML1 + 4,100℃）为1以上的单一乙烯-α-烯烃 - 非共轭二烯共聚物的加工性，压缩永久变形性等形状保持性优异的橡胶组合物， （2）通过凝胶渗透色谱法（GPC）测定的重均分子量/数均分子量之比为6以上，（3）在100℃下100秒后的应力保持率为0.2以上 在压缩型应力松弛试验中为80℃。

    Reduced fouling in process for production of EP
    69.
    发明公开
    Reduced fouling in process for production of EP 失效
    减少结垢的工艺EP的制备。

    公开(公告)号：EP0652234A3

    公开(公告)日：1995-10-25

    申请号：EP94117016.9

    申请日：1994-10-27

    申请人： BAYER RUBBER INC.

    发明人： Knauf, Thomas F. ,  Osman, Akhtar ,  Padliya, Dilipkumar

    IPC分类号： C08F4/68 ,  C08F210/16 ,  C08F210/18

    CPC分类号： C08F10/00 ,  C08F4/68

    摘要： A process for producing EP and EPDM polymers with a reduction in fouling is provided, which process comprises polyemrizing ethylene, an alpha-olefin and a nonconjugated diolefin (if utilized) in a polymerization medium comprising a hydrocarbon diluent at a temperature of from about -50°C to about 150°C in the presence of a catalyst system comprising (a) a vanadium compound, (b) diethyl aluminum chloride, ethyl aluminum sesquichloride or ethyl aluminum dichloride and (c) an organo aluminum compound of the formula R₃Al wherein R is an alkyl group having from 8 to 12 carbon atoms and, optionally, triethyl aluminum, the molar ratio of chloride in diethyl aluminum chloride to the total aluminum content in (b) and (c) being from about 0.7:1 to about 0.95:1, the molar ratio of the chloride in ethyl aluminum sesquichloride to the total aluminum content in (b) and (c) being from about 0.7:1 to about 1.4:1 and the molar ratio of the chloride in ethyl aluminum dichloride to the total aluminum content in (b) and (c) being from about 0.7:1 to about 1.8:1 and the ratio of the mols of vanadium compound to the total mols of diethyl aluminum chloride and ethyl aluminum sesquichloride being from about 1:10 to about 1:50 to the desired conversion.