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    AQUEOUS ACRYLIC POLYMER LATEXES AND THEIR USE AS BINDERS
    1.
    发明申请
    AQUEOUS ACRYLIC POLYMER LATEXES AND THEIR USE AS BINDERS 审中-公开

    公开(公告)号：US20200291220A1

    公开(公告)日：2020-09-17

    申请号：US16765785

    申请日：2018-11-19

    Applicant: BASF SE

    Inventor： Matthias ZORN ,  Armin A. BURGHART ,  Timo MANGEL ,  Felix LAUBERSHEIMER

    IPC: C08L33/14 ,  C08F220/34 ,  C08F220/06 ,  C08F220/18 ,  C08F220/14 ,  C08F8/30 ,  C08F2/00 ,  C08K3/013 ,  C08K3/26 ,  C08K3/34 ,  C08K3/22 ,  C08K5/3412 ,  C09D133/14

    Abstract: The present invention relates to aqueous acrylic polymer latexes, which are suitable as binders in coating compositions for providing flexible roofing. The present invention also relates to coating compositions containing such binders, which are suitable for providing flexible roofing. The aqueous acrylic polymer latexes have a glass transition temperature Tg of at most from −10° C., in particular at most −20° C., or, in case of a multi-stage polymer latex a weight average glass transition temperature Tg of at most from −10° C., where the polymer of the acrylic polymer latex has a carbon polymer backbone formed by polymerized ethylenically unsaturated e monomers M comprising acrylic monomers, and where the carbon polymer backbone bears functional groups of the formula (I) attached to carbon atoms of the polymer backbone *—C(═O)—O—[A-NH]nH (I) where the asterisk indicates the atom attached to a carbon atom of the polymer backbone, n is an integer, the number average of n in all functional groups of the formula (I) being >1, in particular at least 1.1 or at least 1.2 or at least 1.3, and A is selected from the group consisting of 1,2-ethandiyl or 1,2-propandiyl, where the functional groups of the formula (I) contribute to the total weight of the polymer in the acrylic polymer latex by 0.1 to 10% by weight.

    PROCESS FOR PREPARING FOAMED POLYMER-MODIFIED BITUMEN COMPOSITIONS
    2.
    发明申请
    PROCESS FOR PREPARING FOAMED POLYMER-MODIFIED BITUMEN COMPOSITIONS 有权

    公开(公告)号：US20220402819A1

    公开(公告)日：2022-12-22

    申请号：US17637065

    申请日：2020-08-27

    Applicant: BASF SE

    Inventor： Timo MANGEL ,  Maik SCHACHT ,  Michael DIETZSCH ,  Frank WAGNER ,  Uwe VAGT ,  Susanne SCHNEIDER ,  Carmen-Elena CIMPEANU ,  Ekkehard JAHNS ,  Sophie PUTZIEN

    IPC: C04B26/26 ,  C04B24/26 ,  C04B38/10

    Abstract: The invention relates to a process for preparing foamed polymer-modified bitumen compositions and to the use thereof for the production of asphalt. The invention also relates to foamed polymer-modified bitumen compositions obtainable by this process. Furthermore, the invention relates to a process for producing an asphalt composition and to the use thereof in road applications. The process for the preparation of the foamed polymer-modified bitumen composition comprises the following steps: i) Heating and pressurizing a bitumen to obtain a hot flowing bitumen stream, ii) Injecting under pressure an aqueous polymer dispersion into the hot flowing bitumen stream obtained in step i), to obtain a pressurized flowing mixed stream of the bitumen and the aqueous polymer dispersion; iii) Expanding the flowing mixed stream, in particular to atmospheric pressure, such that the water contained in the aqueous polymer dispersion vaporizes and foams the mixed stream to obtain a foamed polymer-modified bitumen.

    AQUEOUS POLYMER DISPERSION FOR ADHESIVE FORMULATIONS
    4.
    发明公开
    AQUEOUS POLYMER DISPERSION FOR ADHESIVE FORMULATIONS 审中-公开

    公开(公告)号：US20230265229A1

    公开(公告)日：2023-08-24

    申请号：US18014492

    申请日：2021-07-08

    Applicant: BASF SE

    Inventor： Timo MANGEL ,  Valerie WILMS ,  Lisa HOUILLOT ,  Maximilian RUELLMANN ,  Thomas KOCH ,  Rene LATOUR ,  Saskia STEINBRUECK

    IPC: C08F220/18 ,  C09J133/10

    CPC classification number: C08F220/1808 ,  C08F220/1804 ,  C09J133/10

    Abstract: The present invention relates to aqueous polymer dispersions of polymers made of polymerized ethylenically unsaturated monomers M which comprise or consist of: a) 55 to 88% by weight, based on the total weight of the monomers M, of at least one monomer Ma consisting of a1) at least one monomer Ma(1) selected from alkyl acrylates having a branched alkyl radical having 3 to 20 carbon atoms, alkyl methacrylates having a branched alkyl radical having 5 to 20 carbon atoms, where the homopolymer of monomer Ma(1) has a theoretical glass transition temperature of at most 10° C. and optionally a2) at least one monomer Ma(2) selected from alkyl acrylates having a linear alkyl radical of 2 to 6 carbon atoms; wherein the weight ratio of monomer Ma(2) to Ma(1) is at most 2:1; b) 8 to 30% by weight, based on the total weight of the monomers M, of a monomer Mb, which is a monoethylenically unsaturated carbonitrile; c) 0 to 25% by weight, based on the total weight of the monomers M, of at least one non-ionic monoethylenically unsaturated monomer Me which is different from the monomers Mb and whose homopolymer has a glass transition temperature of at least 60° C.; provided that the total amount of monomer Mb and Me is in the range of 12 to 40% by weight, based on the total weight of the monomers M; d) at most 2.0% by weight, based on the total weight of the monomers M, of one or more monoethylenically unsaturated monomers Md having an acidic group; e) at most 5% by weight, based on the total weight of the monomers M, of at least one ethylenically unsaturated monomer Me which, alone or with a crosslinking agent, has crosslinking effect and which is different from the monomers Ma to Md; f) at most 10% by weight based on the total weight of the monomers M, of at least one non-ionic monoethylenically unsaturated monomer Mf which has a water-solubility of at least 100 g/L and which is different from the monomers Me; provided that the total amount of monomers Md, Me and Mf does not exceed 10% by weight, based on the total weight of the monomers M. The polymers are suitable as polymer adhesives, in particular as polymer adhesives or binders, respectively, in aqueous flooring adhesive compositions.

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