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    Method for preparing an aqueous dispersion of multistage polymer particles
    1.
    发明授权
    Method for preparing an aqueous dispersion of multistage polymer particles 有权

    公开(公告)号：US10919999B2

    公开(公告)日：2021-02-16

    申请号：US16556607

    申请日：2019-08-30

    Applicant: Rohm and Haas Company

    Inventor： James K. Bardman ,  David G. Kelly ,  Michael W. Leonard

    IPC: C08F220/18 ,  C08F2/22 ,  C08F220/14 ,  C08F20/56 ,  C08K3/22 ,  C08F6/02 ,  C08F20/70

    Abstract: The present invention relates to a method of preparing an aqueous dispersion of multistage polymer particles comprising contacting under emulsion polymerization conditions and in a staged fashion an aqueous dispersion of carboxylic acid functionalized core polymer particles with first monomers and second monomers. The core comprises structural units of a high Tg hydrophobic monomer and/or the first monomers comprise a high Tg hydrophobic monomer, and the second monomers comprise at least 80 percent styrene. The high Tg hydrophobic monomer is cyclohexyl methacrylate, isobornyl methacrylate, 4-t-butyl methacrylate, t-butylstyrene, or n-butyl methacrylate, or a combination thereof. The multistage polymer particles are useful as opaque polymers, which are used in pigmented coating formulations to reduce the load of TiO2. The particles exhibit excellent collapse resistance and unusually low dry bulk density, and do not require acrylonitrile to achieve this desired combination of properties.

    Freeze-thaw stable paint formulation
    2.
    发明授权
    Freeze-thaw stable paint formulation 有权
    冷冻 - 稳定的油漆配方

    公开(公告)号：US09284457B2

    公开(公告)日：2016-03-15

    申请号：US14536732

    申请日：2014-11-10

    Applicant: Rohm and Haas Company

    Inventor： David G. Kelly ,  Pu Luo ,  Michael Rhodes ,  Yogesh Tiwary

    IPC: C09D141/00 ,  C08F2/26 ,  C09D5/02 ,  C09C1/36 ,  C09D7/12 ,  C08F2/44 ,  C09D1/00 ,  C08K9/10 ,  C08K3/22

    CPC classification number: C09D17/008 ,  C08F2/26 ,  C08F2/44 ,  C08K9/10 ,  C08K2003/2241 ,  C09C1/3676 ,  C09D1/00 ,  C09D5/022 ,  C09D5/024 ,  C09D5/025 ,  C09D5/028 ,  C09D17/002 ,  C09D141/00

    Abstract: The present invention relates to a pre-paint composite comprising an aqueous slurry of TiO2 particles and attached and unattached polymeric binder, and a sufficient amount of a secondary alcohol ethoxylate of the formula C10-15H22-32O(CH2CH2O)xH to give 35 to 90 weight percent attachment of polymeric binder to the TiO2 particles, based on the weight of total polymeric binder in the pre-paint composite, where x is from 15 to 50; and the O(CH2CH2O)xH group is bonded to a CH group on the C10-15H22-32 chain. The present invention also relates to a coatings composition containing the composite as well as a process for preparing the pre-paint composite and the coatings composition.

    Abstract translation: 本发明涉及一种预涂料复合材料，其包含TiO 2颗粒和附着和未附着的聚合物粘合剂的水性浆料和足量的式C10-15H22-32O（CH2CH2O）xH的仲醇乙氧基化物，得到35至90 基于预涂料复合材料中的总聚合物粘合剂的重量，聚合物粘合剂与TiO 2颗粒的重量百分比附着，其中x为15至50; 并且O（CH 2 CH 2 O）x H基团键合在C 10-15H 22-32链上的CH基团上。 本发明还涉及含有复合材料的涂料组合物以及制备预涂料复合材料和涂料组合物的方法。

    AQUEOUS DISPERSION OF MULTISTAGE POLYMER PARTICLES
    3.
    发明申请
    AQUEOUS DISPERSION OF MULTISTAGE POLYMER PARTICLES 审中-公开

    公开(公告)号：US20200071558A1

    公开(公告)日：2020-03-05

    申请号：US16556572

    申请日：2019-08-30

    Applicant: Rohm and Haas Company

    Inventor： James K. Bardman ,  David G. Kelly ,  Michael W. Leonard

    IPC: C09D133/06 ,  C09D7/40

    Abstract: The present invention relates to a composition comprising an aqueous dispersion of multistage polymer particles comprising a first and a second phase, wherein the first phase comprises structural units of a carboxylic acid monomer or a salt thereof, and a nonionic ethylenically unsaturated monomer; and wherein the second phase comprises a first and second polymer, wherein the first phase or the second phase first polymer or both comprise structural units of a high Tg hydrophobic monomer; and wherein the second phase second polymer comprises at least 80 percent structural units of styrene. The high Tg hydrophobic monomer is defined as being one or more of the following monomers: cyclohexyl methacrylate, isobornyl methacrylate, 4-t-butyl methacrylate, t-butylstyrene, or n-butyl methacrylate. The multistage polymer particles are useful as opaque polymers, which are used in pigmented coating formulations to reduce the load of TiO2. The particles exhibit excellent collapse resistance and unusually low dry bulk density, and do not require acrylonitrile to achieve this desired combination of properties.

    METHOD FOR PREPARING AN AQUEOUS DISPERSION OF MULTISTAGE POLYMER PARTICLES
    4.
    发明申请
    METHOD FOR PREPARING AN AQUEOUS DISPERSION OF MULTISTAGE POLYMER PARTICLES 审中-公开

    公开(公告)号：US20200071439A1

    公开(公告)日：2020-03-05

    申请号：US16556607

    申请日：2019-08-30

    Applicant: Rohm and Haas Company

    Inventor： James K. Bardman ,  David G. Kelly ,  Michael W. Leonard

    IPC: C08F220/18 ,  C08F2/22 ,  C08F220/14 ,  C08F20/70 ,  C08F20/56 ,  C08K3/22 ,  C08F6/02

    Abstract: The present invention relates to a method of preparing an aqueous dispersion of multistage polymer particles comprising contacting under emulsion polymerization conditions and in a staged fashion an aqueous dispersion of carboxylic acid functionalized core polymer particles with first monomers and second monomers. The core comprises structural units of a high Tg hydrophobic monomer and/or the first monomers comprise a high Tg hydrophobic monomer, and the second monomers comprise at least 80 percent styrene. The high Tg hydrophobic monomer is cyclohexyl methacrylate, isobornyl methacrylate, 4-t-butyl methacrylate, t-butylstyrene, or n-butyl methacrylate, or a combination thereof. The multistage polymer particles are useful as opaque polymers, which are used in pigmented coating formulations to reduce the load of TiO2. The particles exhibit excellent collapse resistance and unusually low dry bulk density, and do not require acrylonitrile to achieve this desired combination of properties.

    PROCESS FOR PREPARING POLYMER ENCAPSULATED TiO2 PARTICLES
    6.
    发明申请
    PROCESS FOR PREPARING POLYMER ENCAPSULATED TiO2 PARTICLES 有权
    制备聚合物纳米TiO2颗粒的方法

    公开(公告)号：US20160340539A1

    公开(公告)日：2016-11-24

    申请号：US15156390

    申请日：2016-05-17

    Applicant: Rohm and Haas Company

    Inventor： James C. Bohling ,  David G. Kelly ,  Pu Luo ,  Yogesh Tiwary

    IPC: C09D133/08

    CPC classification number: C09D133/08 ,  C08F220/18 ,  C09C1/3676 ,  C09D4/00 ,  C08F220/06

    Abstract: The present invention relates to a process for preparing an aqueous dispersion of polymer encapsulated TiO2 particles, comprising a multistage polymerization steps that includes a relatively large amount of low Tg first monomers and a relatively small amount of high Tg second monomers that comprise a relatively high concentration of an acid monomer. The dispersion of encapsulated TiO2 particles shows significantly improved freeze-thaw stability as compared with prior art processes that do not include staging with the second monomers described herein.

    Abstract translation: 本发明涉及一种制备聚合物包封的TiO 2颗粒的水分散体的方法，其包括多阶段聚合步骤，其包括相对大量的低Tg第一单体和相对少量的高Tg第二单体，其包含相对高的浓度 的酸单体。 与现有技术的方法相比，包封的TiO 2颗粒的分散体显示出显着改善的冻融稳定性，其不包括用本文所述的第二单体进行分级。

    FREEZE-THAW STABLE PAINT FORMULATION
    8.
    发明申请
    FREEZE-THAW STABLE PAINT FORMULATION 有权
    冷冻 - 稳定涂料配方

    公开(公告)号：US20150141546A1

    公开(公告)日：2015-05-21

    申请号：US14536732

    申请日：2014-11-10

    Applicant: Rohm and Haas Company

    Inventor： David G. Kelly ,  Pu Luo ,  Michael Rhodes ,  Yogesh Tiwary

    IPC: C09D5/02 ,  C09D141/00

    CPC classification number: C09D17/008 ,  C08F2/26 ,  C08F2/44 ,  C08K9/10 ,  C08K2003/2241 ,  C09C1/3676 ,  C09D1/00 ,  C09D5/022 ,  C09D5/024 ,  C09D5/025 ,  C09D5/028 ,  C09D17/002 ,  C09D141/00

    Abstract: The present invention relates to a pre-paint composite comprising an aqueous slurry of TiO2 particles and attached and unattached polymeric binder, and a sufficient amount of a secondary alcohol ethoxylate of the formula C10-15H22-32O(CH2CH2O)xH to give 35 to 90 weight percent attachment of polymeric binder to the TiO2 particles, based on the weight of total polymeric binder in the pre-paint composite, where x is from 15 to 50; and the O(CH2CH2O)xH group is bonded to a CH group on the C10-15H22-32 chain. The present invention also relates to a coatings composition containing the composite as well as a process for preparing the pre-paint composite and the coatings composition.

    Abstract translation: 本发明涉及一种预涂料复合材料，其包含TiO 2颗粒和附着和未附着的聚合物粘合剂的水性浆料和足量的式C10-15H22-32O（CH2CH2O）xH的仲醇乙氧基化物，得到35至90 基于预涂料复合材料中的总聚合物粘合剂的重量，聚合物粘合剂与TiO 2颗粒的重量百分比附着，其中x为15至50; 并且O（CH 2 CH 2 O）x H基团键合在C 10-15H 22-32链上的CH基团上。 本发明还涉及含有复合材料的涂料组合物以及制备预涂料复合材料和涂料组合物的方法。

    Aqueous dispersion of multistage polymer particles
    10.
    发明授权
    Aqueous dispersion of multistage polymer particles 有权

    公开(公告)号：US11186741B2

    公开(公告)日：2021-11-30

    申请号：US16556572

    申请日：2019-08-30

    Applicant: Rohm and Haas Company

    Inventor： James K. Bardman ,  David G. Kelly ,  Michael W. Leonard

    IPC: C09D133/06 ,  C09D7/40

    Abstract: The present invention relates to a composition comprising an aqueous dispersion of multistage polymer particles comprising a first and a second phase, wherein the first phase comprises structural units of a carboxylic acid monomer or a salt thereof, and a nonionic ethylenically unsaturated monomer; and wherein the second phase comprises a first and second polymer, wherein the first phase or the second phase first polymer or both comprise structural units of a high Tg hydrophobic monomer; and wherein the second phase second polymer comprises at least 80 percent structural units of styrene. The high Tg hydrophobic monomer is defined as being one or more of the following monomers: cyclohexyl methacrylate, isobornyl methacrylate, 4-t-butyl methacrylate, t-butylstyrene, or n-butyl methacrylate. The multistage polymer particles are useful as opaque polymers, which are used in pigmented coating formulations to reduce the load of TiO2. The particles exhibit excellent collapse resistance and unusually low dry bulk density, and do not require acrylonitrile to achieve this desired combination of properties.

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