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24 条记录 (耗时 0.008 秒)

    Preparation of salts of low molecular weight copolymers using metal oxides
    1.
    发明公开
    Preparation of salts of low molecular weight copolymers using metal oxides 失效
    使用金属氧化物制备低分子量共聚物

    公开(公告)号：EP0104316A3

    公开(公告)日：1984-12-27

    申请号：EP83105349

    申请日：1983-05-31

    申请人： ALLIED CORPORATION

    发明人： Lences, Charles Francis

    IPC分类号： C08F08/44

    CPC分类号： C08F8/44 ,  C08F210/02

    摘要： A method for forming ionic copolymer salts from low molecular weight copolymer acids formed from ethylene and an alpha, beta-ethylenically unsaturated carboxylic acid having at least one carboxylic acid group and oxides of Group II metals. The copolymer acid and the metal are fed to a reaction vessel. The copolymer acid and the metal oxide are mixed at a temperature between the melting point of the copolymer acid and 20°C above the melting point of the copolymer acid. The reaction is conducted at a reaction temperature which is from 30°C greater than the melting point of the copolymer acid to 300°C.

    Photographic element containing a polymeric mordant and use thereof in color image transfer
    6.
    发明公开
    Photographic element containing a polymeric mordant and use thereof in color image transfer 失效
    含有聚合物的摄影元件及其在彩色图像转印中的应用

    公开(公告)号：EP0131510A3

    公开(公告)日：1986-06-25

    申请号：EP84401398

    申请日：1984-07-03

    申请人： EASTMAN KODAK COMPANY (a New Jersey corporation)

    发明人： Snow, Robert A. ,  Klein, Gerald W.

    IPC分类号： G03C05/54 ,  C08F08/44

    CPC分类号： G03C8/56 ,  Y10S430/142 ,  Y10T428/31855 ,  Y10T428/31931

    摘要： @ A photographic element and its use in diffusion transfer photography are described which contain a novel polymeric mordant comprising recurring units having the formula
    wherein
    A represents recurring units derived from one or more an α,β-ethylenically unsaturated monomer; B represents recurring units derived from a monomer containing at least two ethylenically unsaturated groups; QN + represents a moiety containing a quaternized nitrogen group; R' represents an alkoxy group having from 1 to 8 carbon atoms or an alkylenedioxy group having from 1 to 4 carbon atoms, the group being appended to an aromatic group of A; R 2 represents an alkoxy group having from 1 to 8 carbon atoms or an alkylenedioxy group having from 1 to 4 carbon atoms, the group being appended to an aromatic group of QN + ; each n and m independently represents an integer from 0 to 5, with the proviso that the polymer contains recurring units having at leasttwo alkoxy groups or one alkylenedioxy group; each R 3 independently represents hydrogen or an alkyl group having from 1 to 6 carbon atoms; X 6 represents an anion; x is from 0 to 80 mole percent; y is from 20 to 100 mole percent; and z is from 0 to 10 mole percent.

    Ionomers with improved low temperature flex-crack resistance and improved process economics
    7.
    发明公开
    Ionomers with improved low temperature flex-crack resistance and improved process economics 失效
    具有改进的低温柔性抗裂性和改进的工艺经济性的转子

    公开(公告)号：EP0148632A3

    公开(公告)日：1986-02-12

    申请号：EP84309047

    申请日：1984-12-21

    申请人： E.I. DU PONT DE NEMOURS AND COMPANY

    发明人： Saltman, Robert Philip

    IPC分类号： C08F08/44 ,  C08F255/02 ,  C08F210/02

    CPC分类号： C08F8/44 ,  C08F255/02 ,  C08F210/02

    摘要： Improved low temperature flex-crack resistant ionic copolymers of ethylene, unsaturated carboxylic acid and at least one softening comonomer that is capable of forming a homopolymer having a glass transition temperature of less than -40°C, such as alkyl acrylates and/or alkyl vinyl ethers and from about 0.5 to about 6.0 mole % of chain branches arising from the polymerization of ethylene, are obtained by direct or graft copolymerization, followed by neutralization of the carboxylic acid groups with metal ions, such ionic copolymers of ethylene being characterized by having from about 5 to about 20 chain branches arising from the polymerization of ethylene/1000 CH 2 units of the polymer backbone, said ethylene chain branches being composed of butyl or longer branches, the copolymer being further characterized by satisfying the equation A + 2.05 B = C, wherein A is the mole percent of softening comonomer, B is the mole percent of butyl or longer chain branches derived from the polymerization of ethylene, and C is from about 1.5 to about 24.3.

    Tough, transparent lead ionomers with greater than 100% neutralization
    8.
    发明公开
    Tough, transparent lead ionomers with greater than 100% neutralization 失效
    TOUGH，透明度超过100％中和度的铅离子

    公开(公告)号：EP0141630A3

    公开(公告)日：1985-11-21

    申请号：EP84307412

    申请日：1984-10-26

    申请人： E.I. DU PONT DE NEMOURS AND COMPANY

    发明人： Statz, Robert Joseph

    IPC分类号： C08F08/44

    CPC分类号： C08F8/44

    摘要： lonic direct and graft copolymers of a-olefins and α,β-ethylenically unsaturated carboxylic acid are provided using from above 1 to about 3 times the amount of lead salt necessary to neutralize all of the copolymerized acid. The resulting ionomers contain high levels of lead and are tough, clear and melt-processible. Accordingly, they are useful in radiation shields.