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1. (WO2018088529) POLYCARBOXYLIC ACID COPOLYMER, CONCRETE ADMIXTURE, AND CONCRETE COMPOSITION

Pub. No.:    WO/2018/088529    International Application No.:    PCT/JP2017/040604
Publication Date: Fri May 18 01:59:59 CEST 2018 International Filing Date: Sat Nov 11 00:59:59 CET 2017
IPC: C08F 290/06
C04B 24/26
C04B 28/02
C04B 103/30
Applicants: NIPPON SHOKUBAI CO., LTD.
株式会社日本触媒
Inventors: SATO Masahiro
佐藤 雅浩
KAWAI Hajime
河合 萌
SAKAMOTO Noboru
坂本 登
Title: POLYCARBOXYLIC ACID COPOLYMER, CONCRETE ADMIXTURE, AND CONCRETE COMPOSITION
Abstract:
Provided is a polycarboxylic acid copolymer capable of achieving, in a well-balanced manner, an excellent viscosity reduction effect, excellent pipe passing properties, and excellent water reduction properties, in a hydraulic powder-containing composition. Also provided is a concrete admixture including said polycarboxylic acid copolymer. Also provided is a concrete composition including said concrete admixture. This polycarboxylic acid copolymer includes, relative to 100% by mass of all structural units: 35%–88% by mass of a structural unit (I) derived from an unsaturated polyalkylene glycol monomer (a) indicated by a specific general formula; 1%–35% by mass of a carboxylic acid structural unit indicated by a specific general formula (II); and 11%–30% by mass of a carboxylic acid alkyl ester structural unit indicated by a specific general formula (III).