Patent ID: 6939402
Filing Date: 2005-09-06
Classification: C04B,C08G,C08L

Abstract:
1. A cement admixture comprising a copolymer or copolymer salt obtained by neutralizing the copolymer with an alkaline substance; wherein, the copolymer is obtained by copolymerizing a monomer mixture comprising a monomer represented by following Chemical Formula 1, a monomer presented by following Chemical Formula 2, and a reactive surfactant represented by following Chemical Formula 3: wherein: R R R m is the average number of moles of the oxyalkylene groups, which is an integer from 1 to 50; wherein: R M wherein: R R R r is the average number of moles of the oxyalkylene groups, which is an integer from 1 to 50; n is 0 or 1; and M