USE OF POLYMER DISPERSION, POLYMERIC POWDER AND POLYMERIC GRANULE FREE FROM AMMONIA AS ADMIXTURE FOR INORGANIC CONSTRUCTION MATERIAL CONSTRUCTION MATERIAL USING THE ABOVE AND METHOD OF IMPROVING MECHANICAL STRENGTH

摘要

PROBLEM TO BE SOLVED: To provide a polymer dispersion which provides improved mechanical properties such as flexibility and break strength, cohesive force and serviceable time to a hardened material for construction.;SOLUTION: The aqueous polymer dispersion is obtained by polymerizing a) at least one kind of ester of acrylic acid and 2-12C alkanol of 40-80 mass%, b) at least one kind of aromatic vinyl monomer and/or at least one kind of ester of methacrylic acid and 1-4C alkanol of 10-40 mass% and c) at least one kind of monoester of 2-10C alkanediol and acrylic acid or methacrylic acid of 2-15 mass%. The dispersion free from ammonia.;COPYRIGHT: (C)2002,JPO