公开(公告)号：US11168165B2

公开(公告)日：2021-11-09

申请号：US16191698

申请日：2018-11-15

Applicant: RHODIA OPERATIONS

Inventor： Mathias Destarac ,  David James Wilson ,  Silvia Stoilova

IPC: C08F2/28 ,  C08F220/56 ,  C08F293/00 ,  C09D153/00 ,  C09J153/00 ,  C08F2/10 ,  C08F2/38

Abstract: The present invention relates to a method for preparing an aqueous dispersion of water-soluble polymers, which comprises a step (E) of radical polymerization, wherein the following are brought into contact in an aqueous medium (M) in which the synthesised polymer is not soluble: at least one ethylenically unsaturated monomer which is soluble in the aqueous medium (M); at least one source of free radicals; and a reactive stabiliser which comprises: a polymer chain (CP) which is soluble in the medium (M), a group (G) providing the radical polymerization of step (E) with a living and controlled nature, such as, for example, a group carrying a thiocarbonylthio —S(C═S)— group.

公开(公告)号：US10160821B2

公开(公告)日：2018-12-25

申请号：US14383201

申请日：2013-03-11

Applicant: RHODIA OPERATIONS

Inventor： Mathias Destarac ,  David James Wilson ,  Silvia Stoilova

IPC: C08F2/10 ,  C08F220/56 ,  C08F2/38 ,  C08F293/00 ,  C09D153/00 ,  C09J153/00

Abstract: The present invention relates to a method for preparing an aqueous dispersion of water-soluble polymers, which comprises a step (E) of radical polymerization, wherein the following are brought into contact in an aqueous medium (M) in which the synthesized polymer is not soluble: at least one ethylenically unsaturated monomer which is soluble in the aqueous medium (M); at least one source of free radicals; and a reactive stabilizer which comprises: a polymer chain (CP) which is soluble in the medium (M), a group (G) providing the radical polymerization of step (E) with a living and controlled nature, such as, for example, a group carrying a thiocarbonylthio —S(C═S)— group.

公开(公告)号：US20150057411A1

公开(公告)日：2015-02-26

申请号：US14383201

申请日：2013-03-11

Applicant: RHODIA OPERATIONS

Inventor： Mathias Destarac ,  David James Wilson ,  Silvia Stoilova

IPC: C08F220/56

CPC classification number: C08F220/56 ,  C08F2/10 ,  C08F2/38 ,  C08F293/005 ,  C08F2400/02 ,  C08F2438/03 ,  C09D153/00 ,  C09J153/00

Abstract: The present invention relates to a method for preparing an aqueous dispersion of water-soluble polymers, which comprises a step (E) of radical polymerization, wherein the following are brought into contact in an aqueous medium (M) in which the synthesised polymer is not soluble: at least one ethylenically unsaturated monomer which is soluble in the aqueous medium (M); at least one source of free radicals; and a reactive stabiliser which comprises: a polymer chain (CP) which is soluble in the medium (M), a group (G) providing the radical polymerization of step (E) with a living and controlled nature, such as, for example, a group carrying a thiocarbonylthio-S(C═S)— group.

Abstract translation: 本发明涉及一种制备水溶性聚合物的水分散体的方法，其包括自由基聚合步骤（E），其中使下列物质在合成聚合物不是的水性介质（M）中接触 至少一种可溶于水介质（M）的烯属不饱和单体; 至少一个自由基来源; 和活性稳定剂，其包含：可溶于所述介质（M）的聚合物链（CP），提供具有活性和受控性质的步骤（E）的自由基聚合的基团（G），例如， 一个携带硫代硫代硫代S（C = S） - 基团的基团。