Patent ID: 8604103
Filing Date: 2013-12-10
Classification: C04B,C08F,C08K

Abstract:
1. An additive composition for a hydraulic composition, comprising: (A) one or more copolymers selected from the group consisting of compounds (1), (2) and (3) shown below; and (B) a mixture of compounds represented by the general formula (B2) shown below <compound (1)> a copolymer, or a salt thereof, of an alkenyl ether derivative represented by the general formula (A1) and a monomer represented by the general formula (A3): wherein R wherein R <compound (2)> a copolymer comprising, as constituent units, a monomer (i) represented by the general formula (A2) shown below and one or more monomers (ii) selected from the group consisting of compounds represented by the general formulae (A3) above shown and the general formula (A4) shown below, having a molar ratio of (ii)/(i)=70/30 to 95/5; wherein R wherein R <compound (3)> a copolymer comprising, as constituent units, a monomer unit (iii) represented by the general formula (A5) shown below and one or more monomers (ii) selected from the group consisting of compounds represented by the general formulae (A3) and (A4) above shown, having a molar ratio of (ii)/(iii)=60/40 to 90/10; wherein R wherein A wherein the average of the sum in total of m1, m2 and m3 of the mixture of compounds represented by the general formula (B2) is 0.5 to 2.5.