公开(公告)号：US11155663B2

公开(公告)日：2021-10-26

申请号：US16098010

申请日：2017-05-03

Applicant: BASF SE

Inventor： Tanja Rost ,  Roelof Balk ,  Immanuel Willerich ,  Sebastian Enck ,  Joost Leswin ,  Wolfgang Gaschler ,  Martin Robert Scheuble

IPC: C08F220/14 ,  C08F212/08 ,  C09D133/02 ,  C09D133/08 ,  C08F220/18 ,  C09D133/12 ,  C08F2/22 ,  C08F220/06 ,  C08K3/22

Abstract: Disclosed herein is a process for preparing an aqueous polymer latex by polymerising a monomer composition M by a radical emulsion polymerisation, where at least 95% of the monomer composition M is metered during a period P to the polymerisation reaction under polymerisation conditions, such that during at least one period P(n) within the period P, the relative amount of monomers M2, which are metered to the polymerisation reaction during the periods P(n), to the total amount of the monomer composition M, which is metered to the polymerisation reaction during said period P(n), is at least 1% by weight higher than the relative amount of monomers M2, which are metered to the polymerisation reaction outside of each of said periods P(n), to the total amount of the monomer composition M, which is metered to the polymerisation reaction outside of each of said periods P(n).