| abstract |
The present invention relates to a reactive surfactant composition for emulsion polymerization which can reduce the particle size of a polymer emulsion and reduce the amount of the reactive surfactant composition to be used. The reactive surfactant composition for emulsion polymerization of the present invention contains a reactive anionic surfactant (component A) represented by the following formula (1), and the component A satisfies the following requirement R. □ (wherein AO represents an alkyleneoxy group having 3 or more and 18 or less carbon atoms, EO represents an extended ethyloxy group, p represents an integer of 1 or more and 15 or less, m' represents an integer of 0 or more, and n' represents An integer of 0 or more, M+ represents a hydrogen ion or a cation, and a plurality of AO may be mixed. The necessary condition R: the average addition molar number m of AO is 1 or more and 50 or less, and the average addition molar number of EO is n In the case of 0 or more and 200 or less, the component in which the AO of the component A is added to have a molar number of m-3 or less is (component A-1), and the component of m+2 or more is (component A-2). In the case of the case, X of the following formula (I) is less than 30. However, when m is less than 3, m'=0 is set to (component A-1). X = (the number of moles of component A-1 + the number of moles of component A-2) 莫 the number of moles of component A × 100 (I) |