CPC C08F 293/005 (2013.01) [C08F 2/26 (2013.01); C08F 18/08 (2013.01); C08F 112/08 (2013.01); C08F 118/08 (2013.01); C08F 120/14 (2013.01); C08F 120/18 (2013.01); C08F 20/14 (2013.01); C08F 2438/02 (2013.01)] | 3 Claims |
1. A process for preparing an ultra-high molecular weight polymer via emulsion polymerization at room temperature comprising potassium persulfate or ammonium persulfate as an initiator, water as a medium, an anionic surfactant as an emulsifier, sodium bicarbonate as a pH regulator, vinyl acetate or (meth) acrylate as a monomer to polymerize by free radical emulsion; to obtain the ultra-high molecular weight polymer wherein a weight average molecular weight of the ultra-high molecular weight polymer is larger than 1,000,000 g/mol;
a molar ratio of the initiator and the monomer is 1-5:100;
wherein the anionic surfactant is sodium dodecyl benzene sulfonate or sodium dodecyl sulfate;
wherein a mass ratio of the water and the monomer is 2-5:1;
wherein the mass ratio of the anionic surfactant and the monomer is 4-6:100 and the mass ratio of the sodium bicarbonate as the pH regulator and the monomer is 2-4:100;
wherein a pH value is adjusted to 7-8 for stability of the process;
wherein the room temperature is between 25° and 35° C.; and
wherein a polymerization reaction time is controlled to a range of 1-6 hours.
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