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    Method for preparing an aqueous polymer dispersion from a vinyl aromatic compound and a conjugated aliphatic diene
    3.
    发明授权
    Method for preparing an aqueous polymer dispersion from a vinyl aromatic compound and a conjugated aliphatic diene 有权

    公开(公告)号：US12098222B2

    公开(公告)日：2024-09-24

    申请号：US17299680

    申请日：2019-11-21

    申请人： BASF SE

    发明人： Nico Veling ,  Carmen-Elena Cimpeanu ,  Dirk Lawrenz

    IPC分类号： C08F2/22 ,  C08F2/38 ,  C08F212/08 ,  C08F220/06 ,  C08F222/02 ,  C08F236/06 ,  C08F236/08 ,  C08K5/14 ,  D21H19/58

    CPC分类号： C08F2/22 ,  C08F2/38 ,  C08F212/08 ,  C08F220/06 ,  C08F222/02 ,  C08F236/06 ,  C08F236/08 ,  C08K5/14 ,  D21H19/58 ,  C08F2800/20

    摘要： The present invention relates to a process for producing an aqueous polymer dispersion by free-radically initiated aqueous emulsion polymerization, by polymerizing, in an aqueous medium,



    (a) 40 to 75 parts by weight of at least one vinylaromatic compound and
    (b) 24.9 to 59.9 parts by weight of at least one conjugated aliphatic diene
    (c) 0.1 to 10 parts by weight of at least one monomer comprising acid groups and
    (d) 0 to 20 parts by weight of at least one other monoethylenically unsaturated monomer,
    the amounts of the monomers (a) to (d) adding up to 100 parts by weight,
    in a monomer feed process in the presence of at least one inorganic peroxide and at least one organic peroxide, with the proviso that
    the continuous metering of the inorganic peroxide starts at the same time as the continuous metering of the vinylaromatic compound,
    the metering of the organic peroxide is started at a time at which at least 5% and not more than 20% of the vinylaromatic compound has already been metered in in a continuous mass flow under polymerization conditions and
    optionally a portion of the inorganic peroxide is initially charged,
    and also to the aqueous polymer dispersions produced by the process and to the use of these as a binder, adhesive, sizing agent for fibers, for the production of coatings or for the production of a paper coating slip.

    POLYMERS WITH SULFUR CONTAINING END GROUPS
    6.
    发明公开
    POLYMERS WITH SULFUR CONTAINING END GROUPS 审中-公开

    公开(公告)号：US20230383018A1

    公开(公告)日：2023-11-30

    申请号：US18032672

    申请日：2021-10-18

    申请人： Arlanxeo Deutschland GmbH

    发明人： Norbert STEINHAUSER

    IPC分类号： C08C19/20 ,  C08F2/26 ,  C08F236/06 ,  C08F236/10 ,  C08C19/25

    CPC分类号： C08C19/20 ,  C08F2/26 ,  C08F236/06 ,  C08F236/10 ,  C08C19/25 ,  C08F2810/40 ,  B60C1/0016

    摘要： A process for making a functionalized diene polymer terminated by a functional end group selected from thiol containing end groups, thiolate containing end groups and a combination thereof, comprising



    (i) preparing a diene polymer by a polymerization reaction comprising an anionic polymerization reaction;
    (ii) adding at least one first functionalisation reagent according to formula (III)










     to the polymerization reaction and reacting the at least one first functionalisation reagent with the anionic chain ends of the diene polymer to obtain a first reaction product,
    (iii) adding at least one second functionalising reagent (IV)










     to the first reaction product to produce a thiol-terminated or thiolate-terminated diene polymer; wherein the process, optionally, further comprises
    (iv) isolating the thiol-terminated or thiolate-terminated diene polymer from the reaction mixture, and optionally further comprising
    (v) bringing the diene polymer into the form of sheets, bales, granules, bales or into the form of a powder,
    wherein the thiol-terminated or thiolate-terminated diene polymer contains at least 51% by weight based on the total weight of the polymer of units derived from 1,3-butadiene, and wherein in formula (III) and (IV) R1, R2, R3 and R4 represent, independently from each other, hydrogen or a hydrocarbon residue containing from 1 to 24 carbon atoms per unit n and wherein the hydrocarbon residue may be saturated or may contain at least one carbon-carbon double bond and wherein the hydrocarbon residue may be interrupted once or more than once by O, Si or S atoms and may contain one or more substituents selected from alkyl amino, alkyl phosphino, alkyl silyl substituents and combinations thereof;
    R5 represents an alkylene group —[CXY]p— wherein p is an integer selected from 2, 3, 4 or 5 and X and Y are independent from each other selected from H, or C1-C6 alkyl and each X and Y may be the same or different in each unit p, or the alkylene group is unsaturated in which case two neighbouring X, or two neighbouring Y, or one neighbouring X and one neighbouring Y jointly represent a carbon-carbon double bond;
    n represents 3, 4, 5, 6, 7 or 8;
    x and y are selected independently from each other and either represent 0 or 1 with the proviso that the sum of x+y is either 1 or 2. Also provided are polymers obtained by the process, compositions and compounds containing the polymers and articles made from the compounds. Also provided are methods of making compounds and articles.

    CURABLE POLYFARNESENE-BASED COMPOSITIONS
    8.
    发明公开
    CURABLE POLYFARNESENE-BASED COMPOSITIONS 审中-公开

    公开(公告)号：US20230265235A1

    公开(公告)日：2023-08-24

    申请号：US18124873

    申请日：2023-03-22

    申请人： FINA TECHNOLOGY, INC.

    发明人： Steven K. Henning ,  Nan Tian ,  Herbert Chao

    IPC分类号： C08F236/22 ,  C08F236/06 ,  C08C19/20 ,  C08C19/22 ,  C08G18/10 ,  C08G18/69

    CPC分类号： C08F236/22 ,  C08C19/20 ,  C08C19/22 ,  C08F236/06 ,  C08G18/10 ,  C08G18/69 ,  C08F2810/40 ,  C08G2190/00

    摘要： A polymer having a hydrophobic polymer chain derived from monomers of farnesene and other optional monomers, such as dienes and vinyl aromatics. The polymer also includes one or more terminal functional groups, such as an amino group, a glycidyl group, a carboxylic acid group, a (meth)acrylate group, a silane group, an isocyanate group, an acetoacetate group, a phenolic group, and a hydroxyl group. Functional groups, such as carboxylic acids, may also be grafted along the hydrophobic polymer chain. The polymer may be incorporated in curable compositions that optionally include one or more polymer resins having similar functional groups. Methods for preparing the curable polymer compositions are also provided. The curable or cured form of the polymer composition may be used in various products, such as a sealant, a coating, a caulk, an electric potting compound, a membrane, a sponge, a foam, an adhesive, or a propellant binder.