| 摘要 |
PURPOSE:To improve adhesion property, water proofing property, chemical- resistant protecting property and high strength property by adding a dewatering agent selected from melamine-base compd. to a specified emulsion to prepare a compounded material, then water-curing. CONSTITUTION:A monomer mixture (A) is prepared by compounding 20-99.5wt.% of styrene or methylmethacrylate monomer, <80wt.% of alkylacrylate monomer, 0.3-6wt.% of ethylenic unsatd. carboxylic acid, and 0.2-5wt.% of silane-contg. vinyl, silane-contg. methacryl or silane-contg. acryl monomers. To this component (A), 4wt.% of reactive surfactant, water in the necessary amt., and polymn. initiator are mixed to effect emulsion polymn. The obtd. polymer emulsion (B) has -30 to 100 deg.C glass transition temp. Then a dewatering agent selected from melamine-base compd. is added by 1-10wt.% to the component (B) to obtain a compounded material. The compounded material is mixed by 3-5wt.% in concrete or the like, and this cement mixed with the polymer emulsion is water-cured at <=50 deg.C. |
