| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for preparing a polymer latex or a polymer emulsion, in which few coarse aggregates are produced in a polymerization reaction and which is excellent in energy saving and efficient because excessive heating from the outside of the polymerization system is not needed. SOLUTION: In the method for preparing a polymer latex or a polymer emulsion to be obtained by radical emulsion polymerization of a polymerizable monomer, after charging part of or all of the monomer, the polymerization is initiated at an internal temperature T1 of the polymerization system in a range of 0 to 50°C and then the temperature T1 is raised to an internal temperature T2 of the polymerization system in a range of 60 to 100°C, wherein the heat of the polymerization is utilized and this heat occupies ≥15% of the quantity of heat needed for temperature raising (T2-T1). COPYRIGHT: (C)2009,JPO&INPIT |
