公开(公告)号：WO2021225769A1

公开(公告)日：2021-11-11

申请号：PCT/US2021/027659

申请日：2021-04-16

Applicant: ROHM AND HAAS COMPANY

Inventor： ZHANG, Qing ,  SWARTZ, Andrew J. ,  LEONARD, Michael W.

IPC: C09D5/00

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.

公开(公告)号：WO2022132383A1

公开(公告)日：2022-06-23

申请号：PCT/US2021/059998

申请日：2021-11-19

Applicant: DOW GLOBAL TECHNOLOGIES LLC ,  ROHM AND HAAS COMPANY

Inventor： ROBERTSON, Ian D. ,  LEONARD, Michael W. ,  DRUMRIGHT, Ray E. ,  BOHLING, James C.

IPC: C09D133/08 ,  C09D143/02 ,  C09D133/12

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.

公开(公告)号：WO2023091641A1

公开(公告)日：2023-05-25

申请号：PCT/US2022/050365

申请日：2022-11-18

Applicant: ROHM AND HAAS COMPANY

Inventor： LEONARD, Michael W.

IPC: C08F265/02 ,  C08F285/00 ,  C08F2/22 ,  C08F2/38

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.

公开(公告)号：WO2023091638A2

公开(公告)日：2023-05-25

申请号：PCT/US2022/050362

申请日：2022-11-18

Applicant: ROHM AND HAAS COMPANY

Inventor： LEONARD, Michael W.

IPC: C08F285/00 ,  C08F265/02 ,  C09D151/00 ,  C08F265/04

Abstract: The present invention relates to a composition comprising an aqueous dispersion of polymer particles comprising a water-occluded core; a polymeric shell comprising structural units of methyl methacrylate, styrene, and trimethylolpropane trimethacrylate; and a film-forming polymeric binder layer. The composition of the present invention provides opacifying pigment-binder hybrid particles with a high scattering coefficient, acceptable collapse resistance, and a substantial absence of acrylonitrile functionalization. The composition of the present invention is useful for reducing the level in TiO2 usage in paints.