公开(公告)号：US20230383043A1

公开(公告)日：2023-11-30

申请号：US18249585

申请日：2021-11-22

Applicant: BASF SE

Inventor： Crispin AMIRI NAINI ,  Andreas GERNANDT ,  Clemens AUSCHRA ,  Bernd RECK

IPC: C08F287/00 ,  C08F293/00 ,  C08F220/18

CPC classification number: C08F287/00 ,  C08F293/005 ,  C08F220/1804 ,  C08F2438/02

Abstract: Disclosed herein is a process of producing a polymeric dispersion by free radical emulsion polymerization of a monomer composition including ethylenically unsaturated monomers in the presence of a block copolymer. The block copolymer has a first block including at least 80 wt.-% units of alkyl acrylate and a second block including units of an ethylenically unsaturated monomer with sulfonic acid groups. Either the first or the second block is connected with a nitroxyl radical. The polymeric dispersion is obtainable by the disclosed process, and the block copolymer is used in the process. Further disclosed herein is a method of using the block copolymer as an emulsifying agent for free radical emulsion polymerization.

公开(公告)号：US20230002634A1

公开(公告)日：2023-01-05

申请号：US17783669

申请日：2020-12-14

Applicant: BASF SE

Inventor： Friederike FLEISCHHAKER ,  Bastiaan LOHMEIJER ,  Wolfgang GASCHLER ,  Joost LESWIN ,  Crispin AMIRI NAINI ,  Andrea MISSKE ,  Christoph FLECKENSTEIN ,  Tobias STEINBACH ,  Jochen GATTERMAYER ,  Sabine EICHHORN

IPC: C09D133/08

Abstract: The presently claimed invention relates to use of an aqueous polymer latex as a binder or co-binder in a waterborne coating composition, wherein the aqueous polymer latex is obtained by polymerizing a monomer composition M, comprising at least one tert-butyl acrylate and/or tertbutyl methacrylate monomer, by radical emulsion polymerization.

公开(公告)号：US20210269653A1

公开(公告)日：2021-09-02

申请号：US17256431

申请日：2019-06-19

Applicant: BASF SE

Inventor： Martin Robert SCHEUBLE ,  Ivan CABRERA ,  Immanuel WILLERICH ,  Crispin AMIRI NAINI ,  Nicolas TISSIER ,  Joerg Alexander DIMMER ,  Tanja ROST

IPC: C09D5/02 ,  C09D7/61 ,  C08F212/08 ,  C08F220/06 ,  C08F220/18 ,  C08F230/08 ,  C08F2/22 ,  C08K3/013 ,  C08K3/34 ,  C08L33/08

Abstract: The present invention relates to an aqueous emulsion paint comprising a) 5% to 50% by weight of an aqueous polymer dispersion having a solids content in the range from 40% to 60% by weight, obtainable by the free-radical aqueous emulsion polymerization of a monomer mixture comprising ethylhexyl acrylate, butyl acrylate and one or more vinylaromatics, preferably styrene, b) 0.1% to 5% by weight of alkali metal alkylsiliconate and/or water-soluble silicate, c) 20% to 70% by weight of inorganic fillers, d) 0% to 30% by weight of at least one pigment, e) 0.1% to 10% by weight of customary auxiliaries, and f) water, based in each case on the total amount of the emulsion paint, the pH of the emulsion paint having a value in the range from 10 to 12, and also relates to the aqueous polymer dispersions, to a process for the preparation thereof and to the use thereof as organic binders in emulsion paints having a high pH.