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    Coating fabrics
    53.
    发明专利
    Coating fabrics 未知

    公开(公告)号：GB939097A

    公开(公告)日：1963-10-09

    申请号：GB4364961

    申请日：1961-12-06

    Applicant: BASF AG

    Inventor： PENNING ERNST ,  WELZEL GERHARD ,  REINHARD HANS ,  WOLF HANS ,  WILHELM HANS

    IPC: B32B27/00 ,  C08G18/62 ,  D06M15/267 ,  D06M15/564 ,  D06N3/04 ,  D06N3/14

    Abstract: 939,097. Coated fabrics. BADISCHE ANILIN- & SODA-FABRIK A.G. Dec. 6, 1961 [Dec. 7, 1960], No. 43649/61. Class 140. Fabrics, especially fabrics of man-made fibres, such as a polycaprolactam fabric, are coated by the application thereto of a solution in a volatile solvent of (a) at least one copolymer of a mixture of (i) at least one unsaturated polymerizable compound containing one or more hydroxyl groups, and (ii) at least one other unsaturated polymerizable compound and (b) at least one polyisocyanate, the solvent is evaporated and the copolymer and polyisocyanate are cross-linked by heating. At least one of the unsaturated polymerizable compounds (i) may be a polymerizable ester of a carboxylic acid which still contains a hydroxyl group, e.g. a partial ester of acrylic or methacrylic acid with a polyhydric alcohol, such as partial esters of butane-1,4-diol-monoacrylate, pentane - 1,4 - diol - monoacrylate and ethylene glycol monomethacrylate. Especially suitable components for copolymerization with these partial esters are acrylic and methacrylic acid esters of alcohols with 1 to 4 carbon atoms, e.g. butyl acrylate, methyl methacrylate, or vinyl esters, e.g. vinyl acetate or propionate. Component (a) may be prepared by polymerization of monomer mixtures containing 0.5 to 10% of monomer (i). The proportion of component (b) may be 0.5 to 10% by weight of component (a). Polyisocyanates specified are the reaction products of polyhydric alcohols with toluylene polyisocyanates which have an excess of reactive isocyanate groups, and di-isocyanates such as hexamethylene-, 1,4-phenylene-, toluylene- or naphthalene-1,5-di-isocyanates. Heating may be carried out at a temperature between 60‹ and 160‹ C., especially between 90‹ and 150‹ C. The solution used for coating may have a solids content between 30 and 70%. A second coating of different composition, e.g. a silicone resin or a modified urea resin, may be applied to the first coating.

    Sizing staple fiber yarns containing cellulosic and/or acrylic fibers
    59.
    发明专利
    Sizing staple fiber yarns containing cellulosic and/or acrylic fibers 未知

    公开(公告)号：GB1119133A

    公开(公告)日：1968-07-10

    申请号：GB462267

    申请日：1967-01-31

    Applicant: BASF AG

    Inventor： WOLF HANS ,  SPOOR HERBERT ,  RUEMENS WILHELM ,  POHLEMANN HEINZE

    IPC: D06M15/31

    Abstract: A composition for sizing staple yarns consists of, or contains, a polymer consisting of copolymerized units of (a) acrylonitrile, and (b) acrylic acid and its sodium or ammonium salt in the molar ratio of (a) : (b) of 1 : 1.5 to 1 : 7 and which, as determined in a 10% by weight aqueous solution at 20 DEG C. has a viscosity of 20 to 2000 c.p. and a pH value of 2.5 to 6.5, the said polymer containing from 0 to 20% by weight of copolymerized units of other monomers, said monomers being soluble in water at 20 DEG C. in an amount of at least 2% by weight. The other monomers employed are e.g. acrylamide, methacrylamide, methyl, acrylate, methacrylic acid or its alkali metal or ammonium salts, maleic acid or its salts or semi-esters, methacrylonitrile and vinyl pyrrolidone. The copolymers are prepared in aqueous solution by copolymerization of acrylonitrile and acrylic acid followed by partial neutralization of the copolymer with ammonium or sodium hydroxide, or by copolymerization of acrylonitrile, acrylic acid and sodium or ammonium acrylate. The aqueous solutions produced are used, after the addition, if desired, of conventional sizing agents such as the starch ether employed in Example 7, for the sizing of cellulosic and/or acrylic fibres (see Division D1).ALSO:A process for sizing staple yarns consisting of cellulosic fibres and/or acrylic fibres, or containing at least 30% by weight thereof, comprises applying to the fibres an aqueous liquor which contains in solution a polymer containing copolymerised units of (a) acrylonitrile and (b) acrylic acid and its sodium or ammonium salt and drying and treated yarn, the said polymer containing units of (a) and (b) in the molar ratio of from 1:1.5 to 1:7 and, as determined in a 10% by weight aqueous solution at 20 DEG C., having a viscosity of 20 to 2000 cp and a pH value of 2.5 to 6.5, and containing 0 to 20% by weight of copolymerised units of other monomers, said monomers being soluble in water at 20 DEG C. in an amount of at least 2% by weight. The sizing liquor may contain conventional agents e.g. the starch ether employed in Example 7. In the examples the sizing liquors are applied to cotton yarn, red-dyed acrylic fibres, pale blue rayon staple/acrylic fibre blend yarns, linen warps, staple rayon yarns and polyester fibre/cotton blend yarns.

    Flocked materials and their production
    60.
    发明专利
    Flocked materials and their production 未知

    公开(公告)号：GB1091956A

    公开(公告)日：1967-11-22

    申请号：GB753665

    申请日：1965-02-22

    Applicant: BASF AG

    Inventor： ZAUNBRECHER HORST ,  CRAEMER KARL ,  WOLF HANS ,  SCHWINDT WOLFGANG ,  WILHELM HANS

    IPC: D04H11/00

    Abstract: Flocked material is produced by a process wherein a highly-viscous or thixotropic solution or dispersion, which may contain 10 to 30% by wt. of a readily volatile organic solvent, of a cross-linkable film-forming macromolecular organic substance is flocked with fibres of all types, e.g. cotton, wool, viscose, acetate, triacetate, polyamide, and polyester fibres having any desired shape and colour, and non fibrous materials, e.g. mica and metal powders, by a conventional method, on a non-adherent substrate, and is dried and subjected either before or after stripping from the substrate, to a cross-linking reaction. The macromolecular organic substance may be a polymer which may be a cross-linkable emulsion polymer, i.e. polycondensation and polyaddition products which after formation of a film can be converted into the thermosetting condition by cross-linking, e.g. unsaturated polyesters, polyurethanes, epoxy resins, and polymers having reactive groups which cause cross-linking, emulsion copolymers of comonomers having reactive groups such as those having free or etherified N-methylolamide, chlorohydrin, epoxy or quaternised dialkylamino methylene amide groups, examples of which are given, or other comonomers which do not contain any groups regarded as reactive in this connection, e.g. butadiene, vinyl esters such as vinyl acetate, styrene, vinyl chloride, acrylic esters, methacrylic esters, fumaric esters, acrylonitrile and methacrylonitrile, acrylic acid, acrylamide and N-vinylpyrrolidone. The emulsion polymers may themselves be cross-linkable, e.g. contain N-methylol groups, or compounds which cause cross-linking, e.g. dimethylolurea, aminoplast recondensates or diisocyanates, may be added thereto. Fillers, thickeners, e.g. cellulose derivatives, polyacrylic acid, and polyvinyl alcohol, dyes, brighteners, pigments, protective colloids, plasticizers, hardeners and cross-linking catalysts may also be present. The solution or dispersion may be applied to the non-adherent substrate by spreading, knife coating or spraying; and is then flocked by scattering or electrostatic means, and any desired pattern being produced by the use of stencils or by applying flock of different types in different patterns. The non-adherent substrate may be a film or sheet of polyvinyl chloride, polyethylene, polyester, metal, glass or oiled paper. The organic film may be provided with a self-adhesive layer on the back.

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