Title:
SYNTHETIC RESIN FOR PLASTISOL AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP3509085
Kind Code:
B2
Abstract:
PURPOSE: To obtain the subject resin large in average particle size, low in necessary plasticizer content, and capable of giving molded products with excellent dry touch feeling, by revolving a polymerizable monomer composition, etc., so as to generate vortex shear flow and by delivering the composition, etc., by using pressure difference to effect homogenization.
CONSTITUTION: In conducting a fine suspension polymerization of a polymerizable monomer composition containing a liposoluble polymerization initiator and dispersion auxiliary using a surfactant, a mixed liquor comprising the monomer composition and an aqueous medium is delivered and homogenized by using a pressure difference of 5-60kg/cm2 while revolving the mixture so as to generate vortex shear flow, thus affording (A) the objective resin 2.2-5.5μm in the average particle diameter d50 of the primary particles and 0.8-1.5 in particle size distribution index: (d85-d15)/d50. Another version of the objective resin is composed of the resin A and (B) a synthetic resin 0.1-0.3μm in the average particle diameter d50 of the primary particles at the weight ratio A/B of 0.05-0.30 (pref. containing 60wt.% of vinyl chloride, methyl methacrylate or styrene unit).
Inventors:
Suzuki, Kazufumi
Application Number:
JP5507595A
Publication Date:
March 22, 2004
Filing Date:
February 20, 1995
Export Citation:
Assignee:
NIPPON ZEON CO LTD
International Classes:
C08L25/04; C08F2/18; C08F14/02; C08F14/06; C08J3/12; C08L25/00; C08L27/06; C08L33/04; C08L33/12; C08L101/00; (IPC1-7): C08J3/12; C08F2/18
Attorney, Agent or Firm:
内山 充
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