METHOD OF OBTAINING POLYVINYLCHLORIDE SUSPENSION Russian patent published in 2009 - IPC C08F114/06 

FIELD: chemistry.

SUBSTANCE: in the method of obtaining polyvinylchloride through suspension polymerisation of vinylchloride in the presence of a protective colloid, oil-soluble initiator, 2,6-di-tret-butyl-4-methylphenol, Zn-containing or Zn-Mg-containing glycerine monoester based on alpha-branched saturated monocarboxylic acids of the C₁₀-C₂₈ fraction in quantity of 0.03-0.06 wt % of vinylchloride, is added to the reaction mixture before adding vinylchloride. When necessary, with the aim of boosting the thermostabilisation effect, a Ca stearate or Ca-Zn stearate in quantity of 0.03-0.06 wt % of vinylchloride, is added to the reaction mixture before adding the monomer.

EFFECT: obtaining polyvinylchloride with high thermal stability and good melt fluidity, with improved morphological uniformity and, consequently, improved processing properties.

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