| 摘要 |
PURPOSE:To obtain the titled emulsifier for providing an emulsion excellent in freeze stability, chemical stability, polymerization stability and mechanical stability, by constituting the same from the sulfate ester of an alkylene oxide adduct of an alkane polyol with a specific carbon number. CONSTITUTION:An emulsifier is constituted of the sulfate ester of an alkylene oxide of an 8-20C alkane polyol. In this case, the alkane polyol has a structure wherein a hydroxyl group is bonded to an 8-20C straigh or branched hydrocarbon chain and the number of said hydroxyl group usually is ratio of 1.5-2.2 per a molecule on an average. In addition, the alkylene oxide to be added to the alkane polyol has 2-4 carbon atoms and the average addition mole number of said alkylene oxide is 2-100. By this constitution, an emulsifier for emulsion polymerization for providing an emulsion excellent in not only polymerization stability but also mechanical stability is obtained.
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