| 摘要 |
Powders of thermoplastic resins such as polyethylene homopolymer and ethylene-vinyl acetate copolymer are obtained by agitating molten resin in admixture with water in the presence of a dispersing system comprising a dispersing amount of a surface active agent selected from the group consisting of sulfates, sulfonates, sarcosinates, taurates, isethionates, fatty amido phosphates, fatty amide derivatives, amido amines, higher alkyl amines, substituted imidazolines, substituted betaines, ethoxylated alkylol amides, ethoxylated phenols and ethoxylated fatty ethers in combination with a dispersion promoting amount of strong base. Optionally, the dispersing system can also contain a water-soluble substantially neutral salt to further promote dispersion formation.
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