Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Dispersants based on polycarboxylic acid compounds
The invention relates to a copolymer, in particular a dispersant for hydraulic binder compositions, comprising a structural subunit S1 of formula (I), a structural subunit S2 of formula (II) and optionally further structural subunits S3, said copolymer further comprising a subunit S4 derived from a chain transfer agent, the chain transfer agent comprises an unsaturated alkyl sulfonate (S) and a hypophosphite (H) in a weight ratio S/H of 0.6: 1 to 3.9: 1, or comprises a mercapto-containing aliphatic acid (M) and a hypophosphite (H) in a weight ratio M/H of 0.4: 1 to 1.2: 1. The invention also relates to a process for the preparation of such a copolymer, to a hydraulic binder composition comprising such a copolymer and to the use of a specific chain transfer agent for the preparation of the copolymer. # imgabs0 #
本发明涉及一种共聚物，特别是用于水硬性粘结剂组合物的分散剂，其包含式(I)的结构子单元S1、式(II)的结构子单元S2和任选的其他结构子单元S3，其中所述共聚物还包含衍生自链转移剂的子单元S4，所述链转移剂包含重量比S/H为0.6：1至3.9：1的不饱和烷基磺酸盐(S)和次磷酸盐(H)，或包含重量比M/H为0.4：1至1.2：1的含巯基的脂族酸(M)和次磷酸盐(H)。本发明还涉及制备这种共聚物的方法、包含这种共聚物的水硬性粘结剂组合物和特定链转移剂用于制备该共聚物的用途。#imgabs0#
Dispersants based on polycarboxylic acid compounds
The invention relates to a copolymer, in particular a dispersant for hydraulic binder compositions, comprising a structural subunit S1 of formula (I), a structural subunit S2 of formula (II) and optionally further structural subunits S3, said copolymer further comprising a subunit S4 derived from a chain transfer agent, the chain transfer agent comprises an unsaturated alkyl sulfonate (S) and a hypophosphite (H) in a weight ratio S/H of 0.6: 1 to 3.9: 1, or comprises a mercapto-containing aliphatic acid (M) and a hypophosphite (H) in a weight ratio M/H of 0.4: 1 to 1.2: 1. The invention also relates to a process for the preparation of such a copolymer, to a hydraulic binder composition comprising such a copolymer and to the use of a specific chain transfer agent for the preparation of the copolymer. # imgabs0 #
本发明涉及一种共聚物，特别是用于水硬性粘结剂组合物的分散剂，其包含式(I)的结构子单元S1、式(II)的结构子单元S2和任选的其他结构子单元S3，其中所述共聚物还包含衍生自链转移剂的子单元S4，所述链转移剂包含重量比S/H为0.6：1至3.9：1的不饱和烷基磺酸盐(S)和次磷酸盐(H)，或包含重量比M/H为0.4：1至1.2：1的含巯基的脂族酸(M)和次磷酸盐(H)。本发明还涉及制备这种共聚物的方法、包含这种共聚物的水硬性粘结剂组合物和特定链转移剂用于制备该共聚物的用途。#imgabs0#
Dispersants based on polycarboxylic acid compounds
基于聚羧酸化合物的分散剂
CHEN YALEI (Autor:in) / ZHANG QING (Autor:in) / ZHU JIALI (Autor:in)
31.05.2024
Patent
Elektronische Ressource
Chinesisch
| Europäisches Patentamt | 2024