ANTISLIP MATERIAL COMPOSITION AND PRODUCTION OF ANTISLIP MATERIAL

摘要

PROBLEM TO BE SOLVED: To obtain a composition excellent in antislip properties and antiblocking property before and after foaming by blending fine particles containing a foaming agent with an aqueous resin emulsion obtained by emulsion polymerization of an unsaturated monomer mixture in the presence of a protective colloid comprising a water-dispersible copolymer having a specified glass transition temperature. SOLUTION: This composition consists of an aqueous resin emulsion which is obtained by subjecting a mixture (A) of unsaturated monomers containing polymerizable double bonds to emulsion polymerization in an aqueous dispersion medium comprising water having a water-dispersible copolymer (B) dispersed therein and which has a mean particle diameter of 0.03-0.08μm, and fine particles which contain a foaming agent and which foam by heating. The component B has a Tg of at least 30 deg.C, consists of 3-40 wt.% ethylenically unsaturated carboxylic acid units and the balance of unsaturated monomer units copolymerizable therewith, and has a mean particle diameter of 0.005-0.03μm in the aforementioned aqueous dispersion medium. The component A is a mixture of those monomers which, when copolymerized, give a copolymer having a Tg of -30 to 10 deg.C.