利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

16 条记录 (耗时 0.012 秒)

    METHOD FOR PREPARING NORBORNENE AND SUBSTITUTED DERIVATIVES OF NORBORNENE
    3.
    发明授权
    METHOD FOR PREPARING NORBORNENE AND SUBSTITUTED DERIVATIVES OF NORBORNENE 失效
    VERFAHREN ZUR HERSTELLUNG VON NORBENNENEN UND SUBSTITUIERTE NORBORNENENDERIVATE

    公开(公告)号：EP0888265B1

    公开(公告)日：2003-07-30

    申请号：EP97907123.0

    申请日：1997-03-13

    申请人： OPTATECH CORPORATION

    发明人： BERGSTRÖM, Christer ,  KOSKINEN, Jukka ,  HALME, Erkki ,  LINDSTRÖM, Matti ,  PERÄLÄ, Mika

    IPC分类号： C07C13/42 ,  C07C13/64

    CPC分类号： C07C13/43 ,  C07C13/42 ,  C07C13/68 ,  C07C2602/42 ,  C07C2603/86

    摘要： The present invention concerns a method for the preparation of norbornene and substituted norbornene compounds via a Diels-Alder reaction, in which method a cyclic diene is reacted with an olefinic compound in order to prepare a norbornene compound. According to the invention a cyclic diene is gradually added to react with an olefinic compound, in order to keep the concentration of the cyclic diene in the reaction mixture as low as possible during the reaction. It is possible to obtain a very pure product, high yield, short reaction time and high concentrations of the exo diastereomer with this procedure.

    摘要翻译： 公开了通过Diels-Alder反应制备降冰片烯和取代的降冰片烯化合物的方法，其中环状二烯与烯属化合物反应以制备降冰片烯化合物。 根据本发明，逐渐加入环状二烯以与烯烃化合物反应，以便使反应混合物中的环状二烯的浓度尽可能地低。 用本发明的方法可以获得非常纯的产物，高产率，短的反应时间和高浓度的非对映异构体。

    PROCESS FOR PREPARING POLYACRYLATE/POLYOLEFIN BLENDS
    4.
    发明授权
    PROCESS FOR PREPARING POLYACRYLATE/POLYOLEFIN BLENDS 失效
    用于生产聚丙烯酸酯和聚烯烃的混合物

    公开(公告)号：EP0985001B1

    公开(公告)日：2004-01-28

    申请号：EP98922816.8

    申请日：1998-05-22

    申请人： Optatech Corporation

    发明人： BERGSTRÖM, Christer ,  HEISKANEN, Tomi

    IPC分类号： C08L33/06 ,  C08L23/02 ,  C08K5/00

    CPC分类号： C08J3/24 ,  C08J2333/06 ,  C08L23/08 ,  C08L23/10 ,  C08L33/06 ,  C08L2666/04

    摘要： The present invention concerns a process for producing a polymer blend comprising a first phase containing a polyacrylate polymer prepared by radical polymerization and a source of radicals, and a second phase containing a polyolefin polymer. According to the invention, the blend is compounded by melt processing and the termination reactions of free radicals derived from the source of radicals are preferably retarded by introducing N,N'-m-phenylene-dimaleimide or a similar peroxide accelerator into the blend before melt blending thereof. The introduction of a peroxide accelerator will promote formation of cross-links in the polyacrylate phase and thus improve the elastomeric properties of the blend.

    PROCESS FOR PREPARING POLYACRYLATE/POLYOLEFIN BLENDS
    5.
    发明公开
    PROCESS FOR PREPARING POLYACRYLATE/POLYOLEFIN BLENDS 失效
    用于生产聚丙烯酸酯和聚烯烃的混合物

    公开(公告)号：EP0985001A1

    公开(公告)日：2000-03-15

    申请号：EP98922816.8

    申请日：1998-05-22

    申请人： OPTATECH CORPORATION

    发明人： BERGSTRÖM, Christer ,  HEISKANEN, Tomi

    IPC分类号： C08L33/06 ,  C08L23/02 ,  C08K5/00

    CPC分类号： C08J3/24 ,  C08J2333/06 ,  C08L23/08 ,  C08L23/10 ,  C08L33/06 ,  C08L2666/04

    摘要： The present invention concerns a process for producing a polymer blend comprising a first phase containing a polyacrylate polymer prepared by radical polymerization and a source of radicals, and a second phase containing a polyolefin polymer. According to the invention, the blend is compounded by melt processing and the termination reactions of free radicals derived from the source of radicals are preferably retarded by introducing N,N'-m-phenylene-dimaleimide or a similar peroxide accelerator into the blend before melt blending thereof. The introduction of a peroxide accelerator will promote formation of cross-links in the polyacrylate phase and thus improve the elastomeric properties of the blend.

    POLYPHENYLENE ETHER BLENDS AND PROCESS FOR PRODUCING THEM
    10.
    发明公开
    POLYPHENYLENE ETHER BLENDS AND PROCESS FOR PRODUCING THEM 失效
    聚苯及其制造方法的混合工

    公开(公告)号：EP0796296A1

    公开(公告)日：1997-09-24

    申请号：EP95918632.0

    申请日：1995-05-19

    申请人： OPTATECH CORPORATION

    发明人： IKKALA, Olli ,  PIETILÄ, Lars-Olof ,  HOLSTI-MIETTINEN, Riitta ,  KATSARAS, Nikitas ,  SELÄNTAUS, Maaria ,  ÖSTERHOLM, Heidi ,  BERGSTRÖM, Christer

    IPC分类号： C08K5 ,  C08L67 ,  C08L71 ,  C08L77 ,  C08L79

    CPC分类号： C08L67/02 ,  C08K5/0008 ,  C08L67/00 ,  C08L71/02 ,  C08L71/123 ,  C08L77/00 ,  C08L79/08 ,  C08L71/12 ,  C08L2666/02 ,  C08L71/00

    摘要： The present invention concerns polymer blends and processes for the preparation thereof. The present blends contain a) 5 to 95 parts by weight of poly(2,6-dimethyl-1,4-phenylene)ether, b) 95 to 5 parts by weight of a second polymer which is immiscible therewith, and c) a component (a compatibilizer) which enhances the compatibility of the polymers. According to the invention the component enhancing the compatibility of the polymers comprises 0.1 to 10 %, preferably about 1.5 to 10 %, calculated on basis of the total weight of components a and b, of at least one compound C, which has the formula (I): Ai-Bj wherein A stands for a group which contains at least one ring with 3 to 7 members, capable of forming ring-to-ring interactions with the phenyl rings of poly(2,6-dimethyl-1,4-phenylene)ether; B is a polar group; i is an integer 1 to 20; and j is an integer 0 to 20; whereat i + j is greater than or equal to 2; the melting point of compound C is above 50 °C and the boiling point thereof above 200 °C (at 760 mmHg) and c; compound C is capable of at least partially dissolving poly(2,6-dimethyl-1,4-phenylene)ether. The polymer blends according to the invention are processible and their elasticity moduli are at least 10 % greater than those of blends which do not contain substance C, which has instead been replaced by the same amount of component b. The polymer blends can be used for the preparation of fibres, coatings and films.