| abstract |
A PROCESS FOR THE PRODUCTION OF DISPERSION CONTAINING POLYMERS OR COPOLYMERS PRACTICALLY FREE FROM MONOMERS, WHICH ARE OBTAINED BY EMULSION POLYMERIZATION OR COPOLYMERIZATION IN AN AQUEOUS MEDIUM IN WHICH MONOMERS ARE USED WHICH CONTAIN UNSATURATED ACIDS OR THEIR ESTERS SUCH AS ACRYLIC ACID AND/OR METHACRYLIC ACID OR THEIR ESTERS, EMULSIFIERS, WATER-SOLUBLE REDOX-SYSTEMS WITH PH VALUES BETWEEN 2 AND 6 AND PEROXY COMPOUNDS THE IMPROVEMENT COMPRISING ADDING PERESTERS AND/OR PERKETALS TO THE REACTION MIXTURE, THE DECOMPOSITION TEMPERATURES OF THE PERESTERS OR PERKETALS BEING PREFERABLY BETWEEN 30 AND 150*C., SO THAT MIXTURE IS POLYMERIZED AT THE POLYMERIZATION TEMPERATURE UNTIL THE RESIDUAL MONOMER CONTENT BECOMES NEGLIGIBLE. |