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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.
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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.
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公开(公告)号：US20240343838A1
公开(公告)日：2024-10-17
申请号：US18707203
申请日：2022-11-18
Applicant: Rohm and Haas Company
Inventor： Michael W. Leonard
IPC: C08F2/26 , C08F2/00 , C08F257/02 , C08F265/06
CPC classification number: C08F2/26 , C08F2/001 , C08F257/02 , C08F265/06 , C08F2400/02
Abstract: The present invention relates to a method for preparing an aqueous dispersion of opacifying pigment-binder hybrid particles that provides particle swelling and concomitant introduction of a binder layer without inhibition of polymerization. The composition prepared by the process of the present invention is useful for reducing the level of TiO2 in paints.
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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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Patent Agency Ranking
公开(公告)号：US20230167309A1
公开(公告)日：2023-06-01
申请号：US17921182
申请日：2021-04-16
Applicant: Rohm and Haas Company
Inventor： Qing Zhang , Andrew J. Swartz , Michael W. Leonard
CPC classification number: C09D5/022 , C09D7/70 , C09D7/65 , C09D125/14 , C09D7/68 , C09D7/61 , C09D7/45
Abstract: The present invention relates to a waterborne composition comprising an aqueous dispersion of first and second multistage polymer particles, wherein each of the first and second polymer particles comprises a water-occluded core and a high Tg polymeric shell wherein the second multistage polymer particles further comprise a polymeric binder layer superposing the shell. The composition of the present invention is useful for reducing the load of TiO2 in paint formulations, while producing coatings with excellent hiding and scrub resistance.
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公开(公告)号：US09988547B2
公开(公告)日：2018-06-05
申请号：US14949159
申请日：2015-11-23
Applicant: Dow Global Technologies LLC , Rohm and Haas Company
Inventor： James C. Bohling , Wei Gao , Michael W. Leonard , Qing Zhang
IPC: C09D125/12 , C08F275/00 , C08J3/18 , C09D133/08 , C09C1/36 , C08J3/205 , C09C3/10 , C09D5/02 , C09D7/12 , C08F265/04 , C08F285/00 , C08F8/44 , C08K3/22 , C09D17/00
CPC classification number: C09D125/12 , C01P2004/62 , C08F8/44 , C08F265/04 , C08F275/00 , C08F285/00 , C08F2800/20 , C08J3/18 , C08J3/205 , C08J2333/12 , C08J2425/12 , C08J2433/08 , C08K3/22 , C08K2003/2241 , C08L2207/53 , C09C1/3676 , C09C3/10 , C09D5/027 , C09D5/028 , C09D7/65 , C09D7/68 , C09D7/69 , C09D7/70 , C09D17/008 , C09D133/08 , C08F212/08 , C08F230/02 , C08F2220/1825 , C08L51/003
Abstract: The present invention relates to opaque polymers functionalized with phosphorus acid groups, composites of TiO2 particles and the opaque polymers, and methods for their preparation. The composites are useful in coatings formulations and have been shown to exhibit improved hiding benefits in coated substrates over compositions containing non-functionalized opaque polymer and TiO2.
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公开(公告)号：US20160152854A1
公开(公告)日：2016-06-02
申请号：US14949159
申请日：2015-11-23
Applicant: Rohm and Haas Company , Dow Global Technologies LLC
Inventor： James C. Bohling , Wei Gao , Michael W. Leonard , Qing Zhang
IPC: C09D125/12 , C09D133/08 , C08J3/18
CPC classification number: C09D125/12 , C01P2004/62 , C08F8/44 , C08F265/04 , C08F275/00 , C08F285/00 , C08F2800/20 , C08J3/18 , C08J3/205 , C08J2333/12 , C08J2425/12 , C08J2433/08 , C08K3/22 , C08K2003/2241 , C08L2207/53 , C09C1/3676 , C09C3/10 , C09D5/027 , C09D5/028 , C09D7/65 , C09D7/68 , C09D7/69 , C09D7/70 , C09D17/008 , C09D133/08 , C08F212/08 , C08F230/02 , C08F2220/1825 , C08L51/003
Abstract: The present invention relates to opaque polymers functionalized with phosphorus acid groups, composites of TiO2 particles and the opaque polymers, and methods for their preparation. The composites are useful in coatings formulations and have been shown to exhibit improved hiding benefits in coated substrates over compositions containing non-functionalized opaque polymer and TiO2.
Abstract translation: 本发明涉及用磷酸基官能化的不透明聚合物，TiO 2颗粒和不透明聚合物的复合材料及其制备方法。 复合材料在涂料配方中是有用的，并且已显示出在涂覆的基材上显示出比非官能化的不透明聚合物和TiO 2的组合物具有改进的隐藏效果。
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公开(公告)号：US20240043700A1
公开(公告)日：2024-02-08
申请号：US18256664
申请日：2021-11-19
Applicant: Dow Global Technologies LLC , Rohm and Haas Company
Inventor： Ian D. Robertson , Michael W. Leonard , Ray E. Drumright , James C. Bohling
IPC: C09D5/02 , C09D133/10 , C09D7/61 , C09D7/65 , C09D7/45
Abstract: The present invention relates to a composition comprising an aqueous dispersion of acrylic polymer particles; paraffin wax; graphite particles; and extender particles. The composition is useful for making coatings with low water pickup for liquid applied sound damping applications.
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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.
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