Agitator for suspension polymerization of vinyl chloride and suspension polymerization method using the same

An agitator for suspension polymerization which comprises:

• an axis extending in an axial direction;
• a plurality of supporting stems operatively connected to said axis and extending in a direction perpendicular with respect to the rotational direction of said axis;
• a plurality of wings each operatively connected to a supporting stem, each wing comprising a main wing which having a planar surface extending in a plane perpendicular to the direction of the supporting stem;
• and a backswept wing having a planar surface joined along a straight edge of the planar surface of said main wing parallel to said axial direction;
• said backswept wing being inclined with respect to said main wing at an angle of 5.degree. to 60.degree. away from said axis.