公开(公告)号：US20210054183A1

公开(公告)日：2021-02-25

申请号：US16980586

申请日：2019-03-04

Applicant: Rohm and Haas Company

Inventor： Hailan Guo ,  Pu Luo ,  Morris Wills

IPC: C08L25/12

Abstract: Provided is polymer particle comprising (a) 40% to 85% by weight, based on the dry weight of the polymer particle, a core polymer having Tg of −35° C. or lower; (b) 15% to 50% by weight, based on the dry weight of the polymer particle, an intermediate polymer having Tg that is 20° C. or lower and that is higher than the Tg of the core polymer by 10° C. or more; (c) 5% to 30% by weight, based on the dry weight of the polymer particle, a shell polymer having Tg of 50° C. or higher; wherein the shell polymer comprises polymerized units of all vinyl aromatic monomers in an amount of 1% or less, by weight based on the weight of the shell polymer.

公开(公告)号：US20190322889A1

公开(公告)日：2019-10-24

申请号：US16299470

申请日：2019-03-12

Applicant: Dow Global Technologies LLC ,  Rohm and Haas Company

Inventor： James C. Bohling ,  Pu Luo ,  Qing Zhang

IPC: C09D125/14 ,  C09D7/45 ,  C09D7/43 ,  C09D5/16

Abstract: The present invention is related to a coating composition comprising a) an aqueous dispersion of acrylic or styrene-acrylic polymer particles functionalized with structural units of a monomer with keto functionality and structural units of a phosphorus acid monomer; b) a dispersant comprising structural units of a carboxylic acid monomer and a monomer with keto functionality; and c) a dihydrazide crosslinking agent. The composition of the present invention is useful for improving scrub resistance in a coating formed from the composition.

公开(公告)号：US20180311117A1

公开(公告)日：2018-11-01

申请号：US15770503

申请日：2016-11-08

Applicant: Rohm and Haas Company

Inventor： Fanwen Zeng ,  Pu Luo ,  Xiaodong Lu ,  Junsi Gu

IPC: A61K8/02 ,  A61K8/27 ,  A61K8/29 ,  A61K8/81 ,  A61K8/92 ,  A61Q17/04

CPC classification number: A61K8/0241 ,  A61K8/27 ,  A61K8/29 ,  A61K8/8152 ,  A61K8/8158 ,  A61K2800/412 ,  A61K2800/413 ,  A61K2800/624 ,  A61Q17/04 ,  C01P2004/84 ,  C09C1/3676

Abstract: An aqueous personal care composition comprising 0.5 to 10 wt % polymer encapsulated particles of titanium dioxide or zinc oxide; said polymer encapsulated particles comprising: (i) particles of titanium dioxide or zinc oxide having an average particle diameter from 10 to 200 nm; (ii) 0.25 to 10 wt % water-soluble sulfur acid-functional first polymer, based on weight of said particles of titanium dioxide or zinc oxide; and (iii) from 10% to 200%, by weight second polymer, based on weight of said particles of titanium dioxide or zinc oxide, wherein the second polymer at least partially encapsulates said particle of titanium dioxide or zinc oxide.

公开(公告)号：US20180037753A1

公开(公告)日：2018-02-08

申请号：US15659813

申请日：2017-07-26

Applicant: Rohm and Haas Company

Inventor： Gary W. Dombrowski ,  Pu Luo ,  Partha S. Majumdar

IPC: C09D7/12 ,  C09D5/00 ,  C09D133/26

CPC classification number: C09D7/61 ,  C08F2/30 ,  C08F265/06 ,  C08F2220/1841 ,  C08K3/22 ,  C08K3/28 ,  C08K5/25 ,  C08K2003/2296 ,  C09D5/00 ,  C09D5/024 ,  C09D7/63 ,  C09D133/26 ,  C09D151/003

Abstract: The present invention relates to a deep base or accent coating composition comprising an acrylic based binder and a Zn++ additive. The composition of the present invention resists water staining better than comparable formulations that do not contain the additive.

公开(公告)号：US09828509B1

公开(公告)日：2017-11-28

申请号：US15196099

申请日：2016-06-29

Applicant: Rohm and Haas Company

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

IPC: C09D7/12 ,  C09D133/06 ,  C08K3/22 ,  C08K5/25

CPC classification number: C09D133/06 ,  C08K3/22 ,  C08K5/25 ,  C08K9/10 ,  C08K2003/2241 ,  C09D5/028 ,  C09D7/62

Abstract: The present invention is a composition comprising a) an aqueous dispersion of TiO2 particles encapsulated with an encapsulating acrylic or styrene-acrylic polymer comprising from structural units of diacetone acrylamide; and b) adipic acid dihydrazide. The composition is useful in coatings applications and shows a surprising improvement in gloss over compositions that do not include diacetone acrylamide functionalized encapsulating polymer and adipic acid dihydrazide.

公开(公告)号：US20170121517A1

公开(公告)日：2017-05-04

申请号：US15338530

申请日：2016-10-31

Applicant: Rohm and Haas Company

Inventor： Kebede Beshah ,  James C. Bohling ,  Pu Luo

IPC: C08L31/04 ,  C08F218/08

CPC classification number: C08L31/04 ,  C08F218/08 ,  C08F230/02 ,  C08L2201/52 ,  C08L2205/025 ,  C09D131/04 ,  C08K5/37 ,  C08K3/32

Abstract: The present invention relates to a process for preparing an aqueous dispersion of a vinyl acetate polymer comprising the step of polymerizing vinyl acetate under emulsion polymerization conditions in the presence of a chain transfer agent which is a hypophosphite salt or X—R1—SH, where R1 is a C1-C4 alkyl group and X is sulfonate, hydroxyl, sulfate, phosphate, phosphonate, carboxylic acid or a salt thereof, or C1-C3-alkyl carboxylate. The process provides a way of lowering the viscosity of the vinyl acetate polymer at a given solids content.

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。

公开(公告)号：US20160177081A1

公开(公告)日：2016-06-23

申请号：US14969087

申请日：2015-12-15

Applicant: Rohm and Haas Company

Inventor： James C. Bohling ,  Kebede Beshah ,  Pu Luo

IPC: C08L31/04

CPC classification number: C08L31/04 ,  C08F218/08 ,  C08F2220/1825 ,  C08F230/02

Abstract: The present invention relates to a process for preparing an aqueous dispersion of a vinyl acetate polymer comprising the step of polymerizing vinyl acetate under emulsion polymerization conditions in the presence of a chain transfer agent which is a hypophosphite salt or X—R1—SH, where R1 is a C1-C4 alkyl group and X is sulfonate, hydroxyl, sulfate, phosphate, phosphonate, carboxylic acid or a salt thereof, or C1-C3-alkyl carboxylate. The process provides a way of lowering the viscosity of the vinyl acetate polymer at a given solids content.

Abstract translation: 本发明涉及一种制备乙酸乙烯酯聚合物的水性分散体的方法，其包括在乳液聚合条件下，在链转移剂（次磷酸盐或X-R1-SH）的存在下聚合乙酸乙烯酯的步骤，其中R 1 是C 1 -C 4烷基，X是磺酸盐，羟基，硫酸盐，磷酸盐，膦酸盐，羧酸或其盐，或C 1 -C 3烷基羧酸盐。 该方法提供了一种降低乙酸乙烯酯聚合物在给定固体含量下的粘度的方法。