中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

13 records (took 0.04 seconds)

    A process for the production of polymer dispersions which are stable to frost and electrolytes
    12.
    发明专利
    A process for the production of polymer dispersions which are stable to frost and electrolytes 未知

    公开(公告)号：GB842672A

    公开(公告)日：1960-07-27

    申请号：GB1268958

    申请日：1958-04-22

    Applicant: BASF AG

    Inventor： FIKENTSCHER HANS ,  BURKERT HANS ,  NEUFELD ELSA ,  PLOETZ ERNST ,  KUESPERT KARLHUGO

    IPC: C08F2/00 ,  C08F2/24

    Abstract: Aqueous polymer suspension stable to frost and electrolytes are prepared by processes comprising polymerizing monomeric ethylenically unsaturated compounds in a aqueous media with water-soluble catalysts in the presence of 2 to 10%, by weight of the monomers, of an emulsifier which has a carbon chain of at least 6 carbon atoms, the hydrocarbon chain bearing a group containing at least one reactive hydrogen atom and which has been reacted with at least 5 mols of an alkylene oxide per mol and then sulphated, and adjusting the pH after polymerization to between 2 and 9. The monomer may be a conjugated diene, vinyl ester, vinyl ketone, vinyl ether, ethylene, styrene and its homologues, acrylic esters, acrylonitrile and their homologues, maleic and fumaric esters and nitrile, vinyl and vinylidene halides and vinyl lactams, optionally together with small amounts of acrylic acid, acrylamide and their homologues, vinyl pyrrolidone and vinyl imidazole. The catalyst may be a persulphate, hydrogen peroxide or peracetic acid, optionally together with sulphurous acid salts, alkylamines or hydroxyalkylamines. The emulsifiers may be prepared by reacting with ethylene or propylene oxide and sulphating fatty alcohols, fatty acids, resin acids, sulphuric acids, their amides and imides, monoalkylated and polyalkylated phenols and naphthols. Many suitable compounds are listed and examples describe the use of emulsifiers derived from sperm oil alcohol, coconut oil alcohol, decyl alcohol, C12-C18 alkyl sulphamides hexadecyl sulphamide of aminomethyl cyclohexane, octadecyl sulphamide, octadecyl sulphanilide, sperm oil acid monoethanolamide, octyl phenol, iso octyl phenol, ethyhexyl phenol, decyl phenol, iso decyl phenol, dodecyl phenol, octyl naphthol, decyl naphthol and dodecyl naphthol; and the copolymerization of methyl acrylate, methyl methacrylate and acrylic acid; ethyl acrylate, methyl methacrylate and acrylic acid; butyl acrylate, acrylonitrile and acrylic acid; vinyl propionate and butyl acrylate; vinylidene chloride, methylacrylate and acrylic acid; vinyl propionate, methyl methacrylate and acrylic acid; styrene, butyl acrylate and acrylic acid; butyl acrylate, methacrylamide, acrylic acid and vinyl chloride; butyl acrylate and vinyl acetate; vinyl propionate and dimethyl maleate; and methyl acrylate, acrylonitrile and acrylic acid. The dispersions may be used for coating and making films, treating leather and textiles, and in floor coverings.

Patent Agency Ranking