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    USE OF A SINGLE-COMPONENT LAMINATING ADHESIVE FOR COMPOSITE FILM LAMINATION
    4.
    发明申请
    USE OF A SINGLE-COMPONENT LAMINATING ADHESIVE FOR COMPOSITE FILM LAMINATION 审中-公开

    公开(公告)号：US20190016931A1

    公开(公告)日：2019-01-17

    申请号：US16069320

    申请日：2017-01-10

    Applicant: BASF SE

    Inventor： Karl-Heinz SCHUMACHER ,  Christine TONHAUSER ,  Christoph KIENER ,  Peter PREISHUBER-PFLUEGL ,  Andrea KUNTZ

    IPC: C09J133/10 ,  C09J133/08 ,  B32B37/12 ,  B32B7/12 ,  B32B27/36

    Abstract: A description is given of the use of a one-component laminating adhesive for composite film lamination, and also of a method for composite film lamination. The laminating adhesive comprises an aqueous polymer dispersion preparable by radical emulsion polymerization of monomers comprising (a) at least 60 wt %, based on the total amount of monomers, of at least one monomer selected from the group consisting of C1 to C20 alkyl acrylates, C1 to C20 alkyl methacrylates, vinyl esters of carboxylic acids comprising up to 20 carbon atoms, vinylaromatics having up to 20 carbon atoms, vinyl halides, vinyl ethers of alcohols comprising 1 to 10 carbon atoms, aliphatic hydrocarbons having 2 to 8 carbon atoms and one or two double bonds, and mixtures of these monomers, and (b) at least 0.1 wt %, based on the total amount of monomers, of at least one monomer having at least one acid group, and (c) 0.1 to 5 wt %, based on the total amount of monomers, of at least one ethylenically unsaturated compound having at least one functional group selected from keto groups and aldehyde groups; where the aqueous polymer dispersion comprises at least one compound A which has at least two functional groups that are able to enter into a crosslinking reaction with keto groups or with aldehyde groups; where the molar ratio of the groups of the compound A that are reactive with keto groups or with aldehyde groups to the keto and aldehyde groups of the monomer (b) is from 1:10 to 2:1; and where, in the composite film lamination, at least two films are bonded to one another with the laminating adhesive so firmly that the peel strength is 2.5 N/15 mm or more or that the films bonded to one another are partable only with destruction of at least one of the films. The composite films can be used for the packing of foods.

    LOW-EMULSIFIER AQUEOUS POLYMER DISPERSIONS FOR PRODUCTION OF COMPOSITE FILMS
    5.
    发明申请
    LOW-EMULSIFIER AQUEOUS POLYMER DISPERSIONS FOR PRODUCTION OF COMPOSITE FILMS 审中-公开

    公开(公告)号：US20190002743A1

    公开(公告)日：2019-01-03

    申请号：US16063008

    申请日：2016-12-07

    Applicant: BASF SE

    Inventor： Christine TONHAUSER ,  Karl-Heinz SCHUMACHER ,  Georg LANGHAUSER ,  Sindy SCHUSTER ,  Christoph KIENER ,  Matthias ZORN

    IPC: C09J133/08 ,  C08F220/18 ,  B32B7/12

    Abstract: Described are aqueous polymer dispersions and a method for producing them. The polymer dispersions comprise polymer particles having an average particle diameter of greater than 200 nm, monomodal particle size distribution, and uniform glass transition temperature, and are prepared by radical emulsion polymerization of a monomer mixture comprising ethylenically unsaturated, radically polymerizable monomers, using a polymer seed, less than 0.8 part by weight of emulsifier, and without protective colloids. The monomer mixture consists of a) at least 60 wt % of at least one monomer selected from the group consisting of C1 to C20 alkyl acrylates, C1 to C20 alkyl methacrylates, vinyl esters of carboxylic acids containing up to 20 carbons, vinylaromatics having up to 20 carbons, ethylenically ensaturated nitriles, vinyl halides, vinyl ethers of alcohols containing 1 to 10 carbons, aliphatic hydrocarbons having 2 to 8 carbons and one or two double bonds, and mixtures of these monomers, b) at least 0.1 wt % of at least one monomer having at least one acid group; c) optionally further monomers, the acid groups of the monomers b) being wholly or partly neutralized during the emulsion polymerization. The aqueous polymer dispersions can be used as adhesives, more particularly for the production of composite films.

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