Abstract:
The present invention provides: vinyl chloride-based resin aggregate particles that can be produced through a heat treatment while inhibiting scale formation within a vessel for the heat treatment and that provide a plastisol with non-infiltrating property and a satisfactory sagging property; a process for producing the particles; and a glove obtained using the particles. The vinyl chloride-based resin aggregate particles of the present invention are characterized in that the aggregate particles have a mean volume particle diameter of 10 to 60 μm, the percentage of particles having a particle diameter of 10 to 60 μm is at least 50 vol. %, and a plastisol containing 100 weight parts of the aggregate particles and 160 weight parts of di-2-ethylhexyl phthalate satisfies the relationship 3≦η70/η40≦1000 where η40 is the viscosity at a shear rate of 1 s−1 of the plastisol that has been retained at 40° C. for 10 minutes and η70 is the viscosity at a shear rate of 1 s−1 of the plastisol that has been warmed from 40° C. at 10° C./min. and retained at 70° C. for 3 minutes. The vinyl chloride-based resin aggregated particles are obtained by flocculating a vinyl chloride-based resin through a two-stage heat treatment consisting of a primary heat treatment and a secondary heat treatment.
Abstract:
An object is to provide (I) a PHA powder which has (i) good redispersibility when the PHA powder is formed into a slurry and (ii) good film forming properties when the PHA powder is applied to slurry coating and (II) a method for producing the PHA powder. The object is attained by providing a PHA powder in which a composition ratio of a 3-hydroxybutyrate unit to a 3-hydroxyhexanoate unit is 80/20 to 91/9 (mol/mol), a moisture content is not more than 20%, and a circularity of a primary particle present at a surface of the PHA powder is not less than 0.92.
Abstract:
The present invention relates to a method for manufacturing coagulated particles from a latex prepared by emulsion polymerization, containing step of discharging the latex prepared by emulsion polymerization containing a thickener or the latex prepared by emulsion polymerization having a given viscosity into a solution containing a coagulating agent, to coagulate the latex prepared by emulsion polymerization, aggregates having an anisotropy shape obtained by discharging a latex prepared by emulsion polymerization containing a thickener into a solution containing a coagulating agent, and coagulated particles from the latex prepared by emulsion polymerization obtained by the method.