中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

50 records (took 0.021 seconds)

    Production of flexible coatings
    43.
    发明专利
    Production of flexible coatings 未知

    公开(公告)号：GB1125718A

    公开(公告)日：1968-08-28

    申请号：GB280866

    申请日：1966-01-21

    Applicant: BASF AG

    Inventor： REINHARD HANS ,  HOELSCHER FRIEDRICH ,  DOTZAUER BERNHARD

    IPC: C09D127/08 ,  D21H19/20 ,  D21H19/82

    Abstract: 1,125,718. Coated sheet material. BADISCHE ANILIN-& SODA FABRIK, A.G. 21 Jan., 1966 [22 Jan., 1965], No. 2808/66. Heading B2E. [Also in Division C3] Sheet materials containing cellulose are coated with a sub-coat by applying aqueous dispersions of mixtures of (1) copolymers A of 80-98% by weight of vinylidene chloride and 2-20% by weight of copolymerisable monoethylenically unsaturated compounds and (2) polymers B of ethylenically unsaturated compounds having a glass transition temperature of +10‹ to -55‹C, the amount of polymers B being 10-65% of the weight of the sum of the polymers A and B in the mixture, drying the sub-coat and thereafter applying as top-coat aqueous dispersions of a copolymer of 80-98% by weight of vinylidene chloride and 2-20% by weight of a copolymerisable monoethylenically unsaturated compound and drying the top-coat. Compounds copolymerisable with the vinylidene chloride in copolymers A may be esters of acrylic and/or methacrylic acid and monohydric aliphatic alcohols containing 1-8 carbon atoms in the alcohol radical, and vinyl chloride, acrylonitrile, methacrylonitrile, styrene, vinyl esters of aliphatic monocarboxylic acids having 2-12 carbon atoms, such as vinyl acetate and propionate, acrylamide, methacrylamide, acrylic acid, methacrylic acid, crotonic acid, maleic acid, fumaric acid, itaconic acid, the monoamides and N-substituted monoamides of said acids, esters and monoesters of these acids, and aliphatic monohydric and aliphatic monohydric alcohols containing 1-8 carbon atoms, maleic anhydride and itaconic anhydride. Polymers B may be copolymers containing 40-90% by weight of esters of acrylic acid and/or methacrylic acid with monohydric alcohols containing 2-8 carbon atoms and 10-60% of other conventional monoethylenically unsaturated compounds polymerisable by free radical mechanisms, such as methyl methacrylate, methyl acrylate, styrene, acrylonitrile, vinyl chloride or vinylidene chloride Copolymers of n-butyl acrylate and of butadiene with styrene, acrylonitrile or esters of ethylenically unsaturated carboxylic acids may be used. The proportions of monomers must be such as to provide the specified glass transition temperature. Various suitable copolymers are identified in the Examples. Emulsifiers may be added to the dispersions such as surface active salts of sulphonated ethenoxylated alkylphenols or fatty alcohols. Heat and light stabilizers, anti-foams,. thickeners and plasticizers may be added. Coating may be by means of doctor knives, rollers or shreading means, flooding means, houring or dipping. Drying may be with infrared rays or preheated air. The substrate may be paper or laminates of paper with metal foils such as aluminium foils.

    Packaging materials
    44.
    发明专利
    Packaging materials 未知

    公开(公告)号：GB1119787A

    公开(公告)日：1968-07-10

    申请号：GB4876565

    申请日：1965-11-17

    Applicant: BASF AG

    Inventor： REINHARD HANS ,  HERRLE KARL ,  BLUM DIETER WOLFGANG ,  LOECHNER ARNOLD

    IPC: B65D65/42 ,  D21H19/20 ,  D21H19/22

    Abstract: Packaging material is prepared by coating flat substrates with aqueous dispersions of polymers of vinylidene chloride wherein the aqueous polymer dispersions are mixtures of an aqueous dispersion of 50 to 75 parts by weight of a copolymer A of 85 to 92% by weight of vinylidene chloride and 15 to 8% by weight of an ester of an ethylenically unsaturated carboxylic acid having 3 to 5 carbon atoms with an alcohol containing 1 to 8 carbon atoms and an aqueous dispersion of 25 to 50 parts by weight of a copolymer B of 55 to 67% by weight of butadiene and 33 to 45% by weight of acrylonitrile and/or methacrylonitrile. From 10 to 50% by weight of the ester units of copolymer A may be replaced by units of acrylonitrile, methacrylonitrile and/or vinyl chloride. Up to 20% by weight of the units of butadiene in copolymer B may be replaced by units of one or more esters of ethylenically unsaturated carboxylic acids having 3 to 5 carbon atoms with alcohols containing 1 to 8 carbon atoms. Examples of copolymers are given. The substrate may be fibrous e.g. paper, or films or sheeting of plastics e.g. polyethylene, polypropylene, polystyrene, polyethylene terephthalate, polyvinyl chloride, and metal foils e.g. aluminium foil. The coating may be applied by means of doctor knives, air brushes or rollers, spray, flooding, pouring a dipping means. A further coating containing a copolymer of vinylidene chloride and methyl acrylate may be applied.

Patent Agency Ranking