Patent ID: 6869998

Claim:
A composition for use with cement or concrete as a dispersant, comprising: a polymer comprised of the polymerization product of monomer units A, B and C, wherein monomer unit A is a repeating unit after polymerization of a carboxylate or carboxylate derivative, monomer unit B is a repeating unit after polymerization comprising a sulfate end group. monomer unit C is selected from the group consisting of polyethylene glycol allyl ether (PEGAE), polypropylene glycol allyl ether (PPGAE), polyethylene glycol/polypropylene glycol allyl ether (PEGPGAE), hydroxyethyene glycol methylmethacrylate (HEME), and methoxyethyene glycol methylmethacrylate (MEME), and whereby the polymer has a sulfate end group covalently bonded thereto.