AN ADDITIVE INCLUDING CROSS-LINKED POLYCARBOXYLIC COPOLYMER AND CEMENT COMPOSITION COMPRISING THE SAME

摘要

the invention it is cross-linked polycarboxylic acid-based copolymer included in the cement composition relates to cement compositions containing additives and which, particularly, the polycarboxylic acid-based copolymer and / or contains a salt thereof, wherein the polycarboxylic acid-based copolymer an alkoxy polyalkylene glycol mono (meth) acrylate, ester-based monomers, (meth) containing acrylic acid monomer and from 5 to 20 alkylene oxide groups, and additives of the cement composition to more than one acrylate group or a vinyl copolymer of a monomer mixture containing a cross-linking agent having a group that is characterized and relates to a cement composition containing the same, an additive in the cement composition containing the polycarboxylic acid-based copolymer according to the present invention is to form a cement composition having an extended excellent workability to enhance the initial reducing ability and the retaining force by adjusting the cross-linking structure It can be.