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1. US20210198143 - MULTITYPE-ADSORPTIVE-GROUP POLYCARBOXYLIC ACID WATER-REDUCING AGENT, METHOD FOR PREPARING THE SAME AND USE THEREOF

Office
United States of America
Application Number 17272922
Application Date 18.04.2019
Publication Number 20210198143
Publication Date 01.07.2021
Publication Kind A1
IPC
C04B 24/16
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
24Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
16Sulfur-containing compounds
C08F 290/06
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
290Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
02on to polymers modified by introduction of unsaturated end groups
06Polymers provided for in subclass C08G52
C04B 28/04
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
28Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
02containing hydraulic cements other than calcium sulfates
04Portland cements
CPC
C04B 28/04
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
28Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
02containing hydraulic cements other than calcium sulfates
04Portland cements
C04B 24/165
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
24Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
16Sulfur-containing compounds
161Macromolecular compounds comprising sulfonate or sulfate groups
163obtained by reactions only involving carbon-to-carbon unsaturated bonds
165containing polyether side chains
C08F 290/062
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
290Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
02on to polymers modified by introduction of unsaturated end groups
06Polymers provided for in subclass C08G
062Polyethers
Applicants Sobute New Materials Co., Ltd.
Nanjing Bote New Materials Co., Ltd.
Inventors Jiaping LIU
Han YAN
Yong YANG
Jinzhi LIU
Xin SHU
Xiumei WANG
Yanwei WANG
Cheng YU
Qianping RAN
Title
(EN) MULTITYPE-ADSORPTIVE-GROUP POLYCARBOXYLIC ACID WATER-REDUCING AGENT, METHOD FOR PREPARING THE SAME AND USE THEREOF
Abstract
(EN)

The present invention discloses a multitype-adsorptive-group polycarboxylic acid water-reducing agent, consisting of 30-60 wt % of a macromolecule with multitype-adsorptive groups and water, the macromolecule with multitype-adsorptive groups has a polyethylene glycol side chain, and adsorption groups of the polymer backbone include a carboxylic acid group, a sulfonic acid group and a phosphoric acid group, the phosphoric acid group being linked to the backbone of the macromolecule with multitype-adsorptive groups by nucleophilic addition. The water-reducing agent of the present invention has significantly improved adaptability to different cements and aggregates while maintaining a high water reduction efficiency, compared with the conventional polycarboxylic acid water-reducing agent. It has a good water reducing efficiency in many different grades of cement, as well as a better resistance to aggregates containing more impurities such as machine-made sand.

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