PURPOSE: To carry out polymerization of a polymerizable monomer, by simple operation and extremely efficiently, by premixing part or the whole of additives with an aqueous medium and adding the blend to a polymerization system.
CONSTITUTION: In subjecting a polymerizable monomer such as vinyl chloride, etc., to suspension or emulsion polymerization, part W the whole of additives (e.g. dispersant, polymerization initiator, suspension stabilizer, quality modifier, etc., methyl cellulose, gelatin, diisopropyl peroxycarbonate, etc.) necessary for polymerization is premixed with an aqueous medium in a weight ratio of 95/5W70/30 and the blend is added to a polymerization system.
EFFECT: Either continuous weighting feed and batch weighing feed can be carried out and the amounts of additives added are readily adjusted. Polymers of various grades having uniform quality characteristics can be easily produced.
TAKESHIGE YASUTAKA
KANEKO HIROSHI
IWASHITA TORU
KUBO MASAHIRO
| JPS61130315A | 1986-06-18 | |||
| JPS50104288A | 1975-08-18 | |||
| JPS575703A | 1982-01-12 | |||
| JPS62235303A | 1987-10-15 |
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