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    Flocked materials and their production
    1.
    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.

    Binder and process for flocking fibrous material
    9.
    发明专利
    Binder and process for flocking fibrous material 未知

    公开(公告)号：GB1011810A

    公开(公告)日：1965-12-01

    申请号：GB2553963

    申请日：1963-06-27

    Applicant: BASF AG

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

    IPC: D04H11/00 ,  D06M15/263 ,  D06M15/29 ,  D06M23/10

    Abstract: A binder for flocking fibrous material comprises a thickened aqueous dispersion of a self-cross-linking copolymer and from 3 to 30% by weight of the total binder of an organic liquid which exerts a swelling, but no dissolving, action on the copolymer. Preferred copolymers are those made from an alkyl acrylate or methacrylate, acrylonitrile or methacrylonitrile N-methylol acrylamide or methacrylamide, an unsaturated carboxylic acid and, optionally, other monomers. Suitable organic liquids are aliphatic halohydrocarbons, aromatic hydrocarbons, ketones, esters and amides. Also present in the compositions may be water-dispersible aminoplast condensates, and catalysts for the cross-linking of the copolymers and condensation of the aminoplasts. Coatings formed from the compositions are cross-linked by heating above 80 DEG C. The examples describe the following compositions: (1) an ammonia-neutralized aqueous dispersion of a copolymer of n-butyl acrylate, ethyl acrylate, acrylonitrile, acrylic acid and N-methylolmethacrylamide containing trichloroethylene, dimethylolurea dimethyl ether urea, a sperm oil alcohol/ethylene oxide condensate and ammonium thiocyanate; (2) an ammonia-neutralized aqueous dispersion of a copolymer of isobutyl acrylate, acrylonitrile, N-methylolacrylamide and acrylic acid containing perchloroethylene, the dimethylol compound of butanediol diurethane, a sperm oil alcohol/ethylene oxide condensate and ammonium thiocyanate; (3) an ammonia-neutralized aqueous dispersion of a copolymer of n-butyl acrylate, styrene, acrylonitrile, acrylic acid and the N-methylol ethyl ether of methacrylamide, containing cyclohexanone, a urea-formaldehyde condensate, methyl cellulose, a sperm oil alcohol/ethylene oxide condensate and diammonium phosphate; and (4) an ammonia-neutralized aqueous dispersion of a copolymer of n-butyl acrylate, methyl acrylate, acrylonitrile, divinyl benzene N-methylolmethacrylamide and acrylic acid containing a urea-formaldehyde condensate, trichloroethylene, methyl cellulose, urea, ammonium chloride and ammonium thiocyanate. Specification 1,011,809 is referred to.ALSO:Fabrics are flocked by applying thereto an adhesive comprising a thickened aqueous dispersion of a self-crosslinking copolymer and from 3-30% by weight of the total composition of an organic liquid which exerts a swelling, but no dissolving, action on the copolymer (see Division C3), flocking the coated fabric, and then heating the assembly at a temperature greater than 80 DEG C. to cross-link the copolymer. Also present in the compositions may be water-dispersible aminoplast condensates, and catalysts for the cross-linking of the copolymers and condensation of the aminoplasts. The examples describe the following processes: (1) applying to jute fabric and bonded cotton non-woven fabric an ammonia-neutralized aqueous dispersion of a copolymer of n-butyl acrylate, ethyl acrylate, acrylic acid and N-methylolmethacrylamide containing trichloroethylene and dimethylolurea dimethyl ether, flocking the coated fabrics with nylon-6 flock, and heating at 130 DEG C., (2) applying to cotton cloth, which has been given a waterproof finish with paraffin emulsion, an ammonia-neutralized aqueous dispersion of a copolymer of isobutyl acrylate, acrylonitrile, N-methylolacrylamide and acrylic acid containing the dimethylol compound of butanediol diurethane and perchloroethylene, flocking the coated cloth with viscose flock, and heating at 140 DEG C., (3) applying to jute fabric, which has been coated with polyvinyl chloride paste and then gelled, an ammonia-neutralized copolymer of n-butyl acrylate, styrene, acrylonitrile, the N-methylol ethyl ether of methacrylamide and acrylic acid containing a urea-formaldehyde condensate and cyclohexanone, flocking the fabric with polyamide flock and heating at 120 DEG C., and (4) applying to a cotton fabric, which has been laminated with polyvinyl chloride foam, an ammonia-neutralized aqueous dispersion of a copolymer of n-butyl acrylate, methyl acrylate, acrylonitrile, acrylic acid, N-methylol methacrylamide and divinyl benzene containing a urea-formaldehyde condensate and trichloroethylene, flocking the fabric with polyamide flock, and heating at slightly above 80 DEG C. Specification 1,011,809 is referred to.

    Binder and process for flocking surfaces
    10.
    发明专利
    Binder and process for flocking surfaces 未知

    公开(公告)号：GB1011809A

    公开(公告)日：1965-12-01

    申请号：GB2553863

    申请日：1963-06-27

    Applicant: BASF AG

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

    IPC: D04H11/00 ,  D06M15/39

    Abstract: Binders for flocking surfaces comprise, for each 100 parts by weight: (a) 20 to 45 parts by weight of one or more copolymers prepared by polymerization in an aqueous dispersion at a maximum pH value of 5 of a mixture of monomers consisting of: (i) 40-80% by weight of one or more C2-C4 acrylates and/or methacrylates, (ii) 10-35% by weight of acrylonitrile and/or methacrylonitrile, (iii) 3-6% by weight of N-methylol acrylamide and/or methacrylamide, (iv) 0.5-5% by weight of a polymerizable carboxylic acid, and (v) 0-40% by weight of one or more other unsaturated compounds, the copolymer being thickened by the addition of an alkaline substance; (b) 3 to 30 parts by weight of a water-soluble or -dispersible aminoplast-forming substance containing N-methyl or N-methylol ether groups; (c) 0.1-5 parts of at least one acidic condensation catalyst; and, optionally, (d) conventional amounts of one or more conventional flock binder additives, the excess above the total quantity included in (a)-(d) needed to give a total of 100 parts by weight representing the quantity of water present in the aqueous dispersion. The examples describe compositions in which there are used as components (a) ammonia - neutralized aqueous dispersions of n - butyl acrylate/ethyl acrylate/acrylonitrile/N - methylolmethacrylamide/acrylic acid, isobutyl acrylate/acrylonitrile/N - methylolacrylamide/methacryli acid, and n-butyl acrylate/acrylonitrile/styrene/N - methylolmethacryl amide/acrylic acid copolymers, as components (b) dimethylolurea dimethyl ether and the dimethylol compound of butanedioldiurethane, as components (c) ammonium nitrate and thiocyanate, and as components (d) a sperm oil alcohol/ethylene oxide condensate and the sodium salt of the acid sulphate thereof, cellulose methyl ether, dioctyl phthalate, urea, an azo dyestuff, and kerosene. The compositions are cross-linked, after a flocking operation, by heating at temperatures above 90 DEG C.ALSO:Flocked surfaces are produced by applying fibrous flock to the surface of a porous material on which has been deposited a binder comprising, in an aqueous medium, (a) a copolymer of (i) one or more C2-C4 acrylates and/or methacrylates, (ii) acrylonitrile and/or methacrylonitrile, (iii) N-methylol acrylamide and/or methacrylamide, (iv) an unsaturated carboxylic acid, and, optionally, (v) one or more other unsaturated compounds, (b) a water-soluble or -dispersible aminoplast-forming substance containing N-methylo or N-methylol ether groups, (c) an acidic condensation catalyst, and, optionally, (d) conventional flock binder additives (see Division C3). The examples describe flocking the surfaces of jute and cotton fabrics with nylon-6 fibres, and surfaces of polyamide, polyester, viscose rayon and cellulose acetate fabrics with viscose rayon fibres, the fabric surfaces being printed with compositions in which there are used as components (a) ammonia-neutralized aqueous dispersions of n-butyl acrylate/ethyl acrylate/acrylonitrile/N-methylolmethacrylamide/acrylic acid, isobutyl acrylate / acrylonitrile / N-methylolacrylamide/methacrylic acid, and n-butyl acrylate/acrylonitrile/styrene/N-methylolacrylamide/acrylic acid copolymers, as components (b) dimethylol urea dimethyl ether and the dimethylol compound of butanedioldiurethane, as components (c) ammonium nitrate and thiocyanate, and as components (d) a sperm oil alcohol/ethylene oxide condensate and the sodium salt of the acid sulphate thereof, cellulose methyl ether, dioctyl phthalate, urea, an azo dyestuff and kerosene. After flocking, the binders are cross-linked by heating to temperatures above 90 DEG C.

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