COMPOSITE POLYAMIDE POROUS FINE PARTICLE HAVING MOISTURE RETENTION, AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a composite polyamide porous fine particles having both features of a polyamide porous fine particles and a moisture retention compound by an industrially easy method. Ž

SOLUTION: In the composite polyamide porous fine particles, the moisture retention compound is carried on the outer surfaces or/and inner parts of the pores of the polyamide porous fine particles having 1 to 30 μm number average particle diameter, a ratio (PDI) of a volume average particle diameter to the number average particle diameter of 1.0 to 2.0, 0.01 to 0.5 μm average pore diameter, 0.1 to 80 m2/g BET specific surface area and porosity (RI) of 5 to 100. Ž

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