Title:
POLYMER LATEX BASED ON VINYL CHLORIDE HAVING TWO AVERAGE PARTICLE SIZES, ITS PRODUCTION AND ITS APPLICATION TO PLASTISOL IMPROVED IN ITS FLUID FLOW CHARACTERISTICS
Document Type and Number:
Japanese Patent JP3177488
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain the subject latex which is low in its viscosity, readily usable, increased in productivity on molding and gives a plastisol useful in coating and molding products by using a vinyl chloride polymer having two groups of average particle size distribution.
SOLUTION: When the corresponding monomers are subjected to micro suspension polymerization in the presence of (A) a first seed polymer comprising particles containing at least one polymerization initiator soluble in an organic solvent and (B) a second seed polymer whose average particle size is smaller than that of the first seed polymer, water, an anionic emulsifier, a soluble metal salt and a reducing agent, the average diameter of the component A is adjusted to 0.6-0.9μm. In a preferred embodiment, the initiator soluble in organic solvents amounts to at least 2.5wt.% based on the component A and the weight ratio of the component B to the component A is set to 0.5-2 and the polymerization reaction is carried out in the presence of at least one of water-soluble initiator, particularly ammonium persulfate.
Inventors:
Philip Espeyal
Richard Pele
Benoit ernst
Richard Pele
Benoit ernst
Application Number:
JP24621397A
Publication Date:
June 18, 2001
Filing Date:
August 27, 1997
Export Citation:
Assignee:
ATOFINA
International Classes:
C08F2/18; C08F2/22; C08F14/06; C08F259/04; C08L27/06; (IPC1-7): C08F2/18; C08F14/06
Domestic Patent References:
| JP63145352A | ||||
| JP5331674B1 |
Attorney, Agent or Firm:
Takashi Koshiba
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