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    Production of ethylene copolymers
    2.
    发明专利
    Production of ethylene copolymers 未知

    公开(公告)号：GB1011986A

    公开(公告)日：1965-12-01

    申请号：GB3543662

    申请日：1962-09-18

    Applicant: BASF AG

    Inventor： NAARMANN HERBERT ,  KASTING ERNST-GUENTHER ,  SCHROEDER GERD

    IPC: C08F10/00 ,  C08F20/54 ,  C08F22/36

    Abstract: Copolymers of ethylene with up to 50% by weight of one or more polymerizable ethylenically unsaturated compounds that are non-gaseous under the conditions of polymerization, at least 1% by weight of the total monomers being a carboxylic amide ethylenically unsaturated in the a ,b position to the carboxylic amide group and if desired, substituted on the amide nitrogen atom, are obtained by polymerizing, in the presence of free radical catalysts, at pressures from 50-600 atmospheres and at temperatures between 50 DEG and 200 DEG C. in a trickle-type reactor or a coil-type reactor, by contacting the ethylene with a thin layer of the polymerizable ethylenically unsaturated compound, which layer contains also the catalyst used. The copolymers produced by this method are waxy and may be readily emulsified in water. Carboxylic amides used are the amide of maleic acid, N-methylol derivatives of carboxylic acids, and alkyl ethers of the above. A long list of vinyl and vinylidene compounds suitable as co-monomers is supplied. Examples relate to the polymerization of ethylene with (1) acrylamide, (2) N-methylol methacrylamide, (3) N-methylol methacrylamide butyl ether, (4) crotonamide, (5) imide of maleic acid, (6) acrylamide and methyl acrylate, (7) methacrylamide and vinyl acetate, (8) N-methylol methacrylamide and ethyl acrylate, (9) N-methylol acrylamide methyl ether, or ethyl ether or hexyl ether, (10) monoamide of maleic acid, (11) N,N1-dimethylol diamide of maleic or fumaric acid, (12) N-hydroxyethyl monoamide of maleic acid.

    Production of dispersable polyethylene waxes
    6.
    发明专利
    Production of dispersable polyethylene waxes 未知

    公开(公告)号：GB929643A

    公开(公告)日：1963-06-26

    申请号：GB4099261

    申请日：1961-11-16

    Applicant: BASF AG

    Inventor： SCHROEDER GERD ,  KASTNING ERNST-GUENTHER ,  OTTERBACH HANS

    IPC: C08F22/00 ,  C08F28/00 ,  C08F220/06

    Abstract: Waxy ethylene polymers dispersable in water are produced by polymerizing ethylene at 50 DEG -250 DEG C. and 100-2,000 atmospheres in p 20-80% of an organic solvent containing up to 20% of water in the presence of 0,1-20% of an at least 50% or wholly neutralized unsaturated polymerizable carboxylic or sulphonic acid and free radical forming calalysts. The acids may be acrylic, methacrylic, crotonic, maleic, fumaric or vinylsulphonic. An alkali, e.g. Na or K, hydroxide or ammonium hydroxide may be used for neutralization as well as organic ammonium compounds in which the H of the NH4 may be substituted by alkyl, alkoxy, aryl or aralkyl radicals. Amides or anhydrides of the above acids may be used together with the acids and their salts. The catalysts, e.g. 0,001-5%, may be organic or inorganic peroxides, e.g. benzoyl, a per salt, peroxyesters, azo compounds or redox systems or the radicals may be produced by high-energy radiation. Regulators, e.g. allyl acetate, may be used. The solvent may be alcohols, ketones, esters, ethers, lactones, and/or hydrocarbons. Dispersants may be used during polymerization which may be carried out in autoclaves or continuously in flow tubes.

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