PURPOSE: To improve stability during emulsion polymerization and improve the water resistance, heat resistacne, and adherence of a polymer to be obtained and of a film formed therefrom by reacting an α-olefin epoxide with acrylic acid and causing an alkylene oxide to add the reactional product.
CONSTITUTION: An α-olefin epoxide is reacted with acrylic acid, and an alkylene oxide is then caused to add to the reactional product. The adduct is oxidized at its hydroxyl group, is carboxylated by reaction with a monohalogenoacetic acid, or is reacted with acrylonitride or an acrylic ester and saponified with an alkali. The resulting adduct is neutralized with an alkali according to need. Thus, the objective emulsifier is obtained which is represented by formula I [wherein R1 is a 6-30C alkyl; R2 is H or methyl; A is a (substituted)alkylene; (n) is 1-200, provided that when (n) is 2 or larger, (AO)n is either a homopolymer consisting of repeating units represented by formula II or a block or random polymer consisting of two or more kinds of repeating units represented by formula III; (m) is 1 or 2; and M is an alkali metal, an ammonium ion, or an alkanolamine residue].
NISHITANI HISAYUKI
YAMAGUCHI HIROKI
