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    4.
    发明专利
    未知

    公开(公告)号：SE311756B

    公开(公告)日：1969-06-23

    申请号：SE314764

    申请日：1964-03-13

    Applicant: STANDARD OIL CO OHIO

    Inventor： ISLEY R ,  ADAMS R

    IPC: C08F22/30 ,  C08F36/20 ,  C08F220/42 ,  C08F265/08 ,  C08F15/00

    Abstract: Copolymers are made by copolymerizing an unsaturated nitrile and a polyalkenyl monomer until substantially all the monomers are converted to monomer, and then polymerizing additional unsaturated nitrile, which may be the same or different from that used in the first step, in the presence of the first-formed copolymer until a final conversion of 70-100% of monomers to polymer is obtained. Nitriles specified are acrylonitrile, methacrylonitrile, chloroacrylonitrile, crotononitrile and vinylidene cyanide. Polyalkenyl monomers specified are acrylic and methacrylic ester of polyhydric alcohols, allyl esters of unsaturated acids, allyl esters of polycarboxylic acids, non-conjugated diolefines, polyunsaturated ethers, polyunsaturated organometallic compounds of silicon, tin and germanium, polyunsaturated aromatic hydrocarbons, methylene-bis-acrylamide, and N-allyl and N-methallyl substituted acrylamides. The polymerization is preferably carried out in an aqueous medium having a pH of 2-8 in the presence of an emulsifier and a redox polymerization. The resulting copolymers may be formed into films from solution in polyacrylonitrile solvents, e.g. dimethylformamide. The examples describe the preparation of copolymers in aqueous media in the presence of a persulphate/metabisulphite catalyst, t-dodecyl mercaptan, and either sodium lauryl sulphate or a phosphate ester as emulsifier, the monomers employed being: (1) acrylonitrile and tetramethylene diacrylate, (2) acrylonitrile, methacrylonitrile and tetramethylene diacrylate, (3) methacrylonitrile and tetramethylene diacrylate, and (6) acrylonitrile with each of ethylene, triethylene and tetraethylene dimethacrylates, divinyl benzene, diallyl maleate, allyl acrylate and divinyl butanediol.

    6.
    发明专利
    未知

    公开(公告)号：SE330092B

    公开(公告)日：1970-11-02

    申请号：SE1055166

    申请日：1966-08-03

    Applicant: STANDARD OIL CO OHIO

    Inventor： ISLEY R ,  ADAMS R

    IPC: B32B27/00 ,  C08J5/12 ,  C08J1/40 ,  B32B27/32

    Abstract: 1,162,225. Laminated synthetic resin films; seaming non-metallic sheet material. STANDARD OIL CO. 10 Aug., 1966 [11 Aug., 1965], No. 35799/66. Headings B5K and B5N. [Also in Divisions B2 and B8] A method of making a laminate comprises coating a surface of a biaxially orientated acrylonitrile polymer film consisting of an acrylonitrile homopolymer or of a copolymer of acrylonitrile with up to 5% by weight of at least one polyalkenyl monomer with an adhesive comprising (1) a mixture of a hydroxyl-terminated polyester and a polyisocyanate or (2) a blend of a copolymer of vinyl acetate and acrylic acid with a copolymer of ethylene and vinyl acetate, or (3) a polyurethane made by reacting 1: 6-hexamethylene diisocyanate and tolylene diisocyanate with trimethylol propane and a cellulose acetate-butyrate polymer having residual hydroxy groups, applying to the adhesive-coated surface of the acrylonitrile polymer film a film of a polyolefine which consists of a polymer of an alpha-olefine having the structure where R is hydrogen or C 1 to C 6 alkyl group; and bonding the two films together optionally with heat setting and/or curing of the adhesive during the bonding step. Many polyalkenyl monomers are disclosed. Specified polyolefines which may be melt-extruded into contact with the adhesive are the homo- and co-polymers of ethylene and propylene, polybutenes, polypentenes, polyheptenes and polyhexenes. The surfaces of the films may be pretreated, e.g. with a gaseous mixture of BF 3 and an oxidizing agent or an oxidizing agent or by the application thereto of flame or corona discharge prior to bonding. Articles, e.g. packages, may be made by the heat sealing of the polyolefine films and examples the folding and edge heat-sealing of laminates to form pouches. The laminates or the articles may be attached to foam layers or to woven or non-woven fabrics.

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