PROCESS FOR PREPARING CAPSULE-TYPE ADHESIVE AND POLYMER ADHESION-BEADS ENCAPSULATED BY MELAMINE RESIN

摘要

Provided is a method for preparing an capsulated adhesive of a polymer adhesion bead which can be stored and transported in a powder state even at a room temperature and is excellent in the durability of particle surface. The method comprises the steps of dissolving 0.5-1 wt% of sodium dodecyl benzenesulfonate in distilled water; adding melamine and a formalin resin in a ratio of 1:1.7 to 1:2.5 by mol to the obtained solution and stirring it at 60-70 deg.C for 20-40 min; and adding a polymer adhesion bead to the obtained solution to crosslink the melamine resin and the formalin rein under an acidic condition, thereby capsulating the polymer adhesion bead. The capsulated adhesive has a size of 3-15 micrometers. Preferably the amount of the polymer adhesion bead is 75-80 wt% to 20-25 wt% of melamine and formalin resin.