Polymeric compositions
    3.
    发明授权
    Polymeric compositions 失效
    聚合物组合物

    公开(公告)号:US3683052A

    公开(公告)日:1972-08-08

    申请号:US3683052D

    申请日:1970-08-19

    CPC classification number: C08F279/02 C08F220/42

    Abstract: Impact-resistant polymers having low permeability to gases and vapors are prepared by polymerizing acrylonitrile with an alphaolefin such as isobutylene, at least one member selected from the group consisting of an acrylic ester, a methacrylic ester, methacrylonitrile, an acrylamide, and a vinyl ester, and optionally another vinyl monomer component such as a vinyl aromatic monomer in an aqueous medium in the presence of a diene rubber.

    Abstract translation: 通过将丙烯腈与α-烯烃(例如异丁烯),至少一种选自丙烯酸酯,甲基丙烯酸酯,甲基丙烯腈,丙烯酰胺和丙烯酸酯的组分聚合而制备对气体和蒸气具有低渗透性的耐冲击聚合物 乙烯基酯和任选另外的乙烯基单体组分如乙烯基芳族单体在水性介质中在二烯橡胶的存在下进行。

    New polymeric compositions
    4.
    发明授权
    New polymeric compositions 失效
    新型聚合物组合物

    公开(公告)号:US3652731A

    公开(公告)日:1972-03-28

    申请号:US3652731D

    申请日:1970-11-13

    CPC classification number: C08F279/02 C08F220/42

    Abstract: IMPACT-RESISTANT THERMOPLASTIC POLYMERS HAVING LOW PERMEABILITY TO GASES AND VAPORS ARE PREPARED BY POLYMERIZING ACRYLONITRILE WITH AN ALPHA-OLEFIN SUCH AS ISOBUTYLENE, AT LEAST ONE MEMBER SLECTED FROM THE GROUP CONSISTING OF AN ACRYLIC ESTER, A METHACRYLIC ESTER, METHACRYLONITRILE, AN ACRYLAMIDE, AND A VINYL ESTER, AND OPTIONALLY ANOTHER VINYL MONOMER COMPONENT SUCH AS A VINYL AROMATIC MONOMER IN AN AQUEOUS MEDIUM IN THE PRESENCE OF A RUBBERY POLYMER OF A CONJUGATED DIOLEFIN.

    MULTILAYERED BARRIER STRUCTURES FOR PACKAGING APPLICATIONS AND METHOD FOR THE PREPARATION THEREOF

    公开(公告)号:CA2028772A1

    公开(公告)日:1991-05-16

    申请号:CA2028772

    申请日:1990-10-29

    Abstract: SEP-3705 Multilayered barrier film products providing gas and moisture barrier properties. The film products comprise at least a first polymer film having low permeability to moisture and a heterogeneous polymer blend film containing a gasbarrier polymer and a second polymer distributed in the gas barrier polymer, so as to allow the heterogeneous polymer blend film to adhere to the first polymer film. A method for the preparation of multilayered barrier film products includes the steps of forming a gas barrier polymer film from a heterogeneous polymer blend containing a gas barrier polymer and a second polymer and, bonding a moisture barrier polymer film to at least one side of the gas barrier polymer film. The method can be practiced utilizing conventional coextrusion equipment.

    CATALYSTS USEFUL FOR PREPARING POLYAMIDES

    公开(公告)号:CA1189243A

    公开(公告)日:1985-06-18

    申请号:CA418656

    申请日:1982-12-29

    Abstract: CATALYSTS USEFUL FOR PREPARING POLYAMIDES A polyamide is produced by polymerizing at least one of an alpha, beta unsaturated carboxylic acid and ammonia, an ammonium salt of an alpha, beta unsaturated carboxylic acid, an alpha, beta unsaturated nitrite and water, a beta-amino propionic acid or alkyl derivative thereof and an alpha, beta unsaturated amide and ammoniua in the presence of a catalyst comprising a pentaammine cobalt (III) complex.

Patent Agency Ranking