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    Method of bonding a body of polyethylene to a surface and adhesives used therefor
    3.
    发明授权
    Method of bonding a body of polyethylene to a surface and adhesives used therefor 失效
    将聚乙烯体与表面接合的方法和用于其的粘合剂

    公开(公告)号：US2656297A

    公开(公告)日：1953-10-20

    申请号：US8527249

    申请日：1949-04-02

    Applicant: B B CHEM CO

    Inventor： DAVIS JR HOWARD G ,  DURETTE WILLIAM L ,  JOHNSON ERIC C

    IPC: C08L23/06 ,  C08L23/22 ,  C09J123/06 ,  C09J123/22

    CPC classification number: C08L23/06 ,  C08L23/22 ,  C08L57/02 ,  C08L61/06 ,  C08L2205/02 ,  C08L2205/03 ,  C08L2205/035 ,  C08L2666/04 ,  C09J123/06 ,  C09J123/22 ,  Y10T428/31696 ,  C08L2666/02

    Abstract: An adhesive for bonding polyethylene sheet to the same or other substances comprises a mixture of polyethylene and butyl rubber which dissolves in an organic solvent to give a composition stable at room temperatures. The mixture is prepared by working, e.g. by milling, at a temperature of around the softening-point of polyethylene, e.g. 225 DEG F., cooling, and continued working at a temperature below the softening-point of polyethylene, e.g. below 160 DEG F. After the first milling, the mixture is preferably sheeted out and allowed to stand overnight when an insoluble boardy material results. After remilling, the material is soluble in solvents such as toluol, xylol and naphtha. The ratio of polyethylene to butyl rubber is preferably between 1/4 : 1 and 4 : 1. The preferred polyethylenes have molecular weights of 10,000-20,000. Additional components which may be included in the composition are low molecular weight polyisobutylene, oil-soluble terpene resins, oil-soluble non-heat-reactive phenolic resins, oil-soluble maleic glyceride resins, and anti-oxidants such as hydroquinone monobenzyl ether and mono- and di-heptyl diphenyl amines. The solids content of the solutions should be from 20-80 per cent. The compositions may also be used as coating compositions and as adhesives for other substances, and the bonding of polyethylene sheet to the inside of a tank wagon and the flocking of cloth are described.

    Method of adhering waterproof sheet plastic to a porous surface and article produced thereby
    8.
    发明授权
    Method of adhering waterproof sheet plastic to a porous surface and article produced thereby 失效
    将防水片材塑料粘附到多孔表面的方法和由此制造的制品

    公开(公告)号：US2677635A

    公开(公告)日：1954-05-04

    申请号：US21818251

    申请日：1951-03-29

    Applicant: B B CHEM CO

    Inventor： URBAN STEPHEN E ,  MORRIS THOMAS C ,  JOHNSON ERIC C

    IPC: C08J5/12 ,  C08L27/06 ,  C09J109/02 ,  C09J133/20

    CPC classification number: C08J5/127 ,  C08L27/06 ,  C08L2666/02 ,  C08L2666/28 ,  C08L2666/54 ,  C09J109/02 ,  C09J133/20 ,  Y10T428/249985 ,  Y10T428/249991 ,  Y10T428/31906 ,  Y10T428/31924

    Abstract: 704,241. Adhesive coated sheets; seaming non-metallic sheets; reinforcing edges. B. B. CHEMICAL CO., Ltd. (B. B. Chemical Co.). Sept. 17, 1951 [Sept. 16, 1950], No. 22811/50. Drawings to Specification. Classes 42 (1) and 140 A flexible sheet material for use in reinforcing or bonding vinyl resin sheet material comprises a fabric base, e.g. woven cotton, paper or felt, having on one or both sides a layer less than 0.015 in. thick of an adhesive comprising a butadiene acrylonitrile copolymer and (a) chlorinated rubber, or (b) vinyl chloridevinyl acetate copolymers containing 85-93 per cent. vinyl chloride or (c) mixtures of (a) and (b). A suitable composition contains 100 parts butadiene acrylonitrile copolymer containing 25-45 per cent. acrylonitrile and 25-60 parts of resinous material (a) (b) or (c) dissolved in 70/30 toluene/methylisobutylketone or 75/25 mineral oil/cyclohexanone solvent, and may also contain silica gel and "Dixie" (R.T.M.) clay. A layer of coating solution is applied by knife spreader, and the fabric is passed through an oven having circulating air at 160-170‹ F. to evaporate the solvent, then further coatings are applied with solvent evaporation between each application. The coated sheet may be used to bond two vinyl resin sheets edge-to-edge by pressing the coated sheet onto the joint after activating the adhesive layer by brushing with a volatile organic solvent, e.g. cyclohexanone, methyl ethyl ketone, methylisobutyl ketone, acetone or mixtures thereof. Alternatively, a sheet coated on both sides with adhesive is used to effect a joint between two vinyl resin sheets placed face to face. The coated sheet may also be used to reinforce the edges of vinyl resin sheets at a notch, or sewn seam, or where nails or tacks are to be inserted. The vinyl resin sheets may be sheets of plasticized polyvinyl chloride, polyvinylidene chloride, or copolymers of vinyl chloride with vinyl acetate or vinylidene chloride.

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