Sekisui Plastics Co., Ltd.

Sekisui Kasei Co., Ltd.

Akiyoshi Kusaka

Kaori Kuwagaki

Ryosuke Harada

Yoshinao Yamaji

Toshiki Takenaka

Masaaki Nakamura

Takashi Goto

Mayumi Ando

Mayumi Takayama

Generally spherical resin particles formed of a thermoplastic resin, having a sphericity of 0.90 to 1.00, a light scattering index of 0.5 to 1.0 and a linseed oil absorption of 30 to 150 mL/100 g.

Generally spherical resin particles formed of thermoplastic resin, method for producing same and use of same

Silica-including microcapsule resin particles including an outer shell constituted of a crosslinked polymer and a cavity partitioned with the outer shell, in which the silica-including microcapsule resin particles contain inside the cavity a porous structure in which silica particles are mutually connected, and have a volume average particle diameter of 0.5 to 100 &#x3bc;m.

Silica-including microcapsule resin particles, method for producing same, and application thereof

A manufacturing method for porous resin microparticles comprising steps of: heating a polyester thermoplastic resin having biodegradability to a temperature of 80&#xb0; C. or higher and 200&#xb0; C. or lower in a glycol ether solvent to obtain a solution, and cooling the solution to precipitate the polyester thermoplastic resin as porous resin microparticles.

Porous resin microparticles and manufacturing method for same

In a method for producing composite particles containing polymer particles and silica particles that adhere to the polymer particles, the composite particles are obtained by subjecting a polymerizable monomer to aqueous suspension polymerization in a presence of silica particles and a cellulose compound adsorbing onto the silica particles. The composite particles contain the polymer particles, the silica particles that adhere to surfaces of the polymer particles, and the water-soluble cellulose compound.

Composite particles, method for producing composite particles, and use thereof

Polyester-based resin particles including a polyester-based resin as a base resin, in which the base resin exhibits a plurality of endothermic peaks corresponding to crystal melting temperatures by DSC measurement, at least one of the endothermic peaks exists in each region of a low temperature side region and a high temperature side region, a maximum endothermic peak of the low temperature side region and a maximum endothermic peak of the high temperature side region exhibit a crystal melting heat amount ratio (low temperature side crystal melting heat amount/high temperature side crystal melting heat amount) in a range of 0.1 to 1.5, and the polyester-based resin particles have a volume average particle diameter of 1 to 50 &#x3bc;m.

Polyester-based resin particles, process for producing same, and use thereof

A high-recoverability resin particles having a mean particle size of 1 to 100 &#x3bc;m containing a cross-linked (meth)acrylic acid ester-based resin, wherein the high-recoverability resin particles have a recovery rate of 22% or greater, and a 30% compression strength of 1.5 to 5.0 kgf/mm.

High-recoverability resin particles of a crosslinked (meth)acrylic acid ester-based resin, and use thereof

There are provided a method for producing particles by suspension polymerization which ensures an excellent dispersion stability of the monomer and a simpler washing step, composite particles obtainable by this production method, and use of the composite particles. The method for producing composite particles includes a polymerization step of subjecting a monomer mixture which contains a polymerizable vinyl monomer to aqueous suspension polymerization in a presence of small polymer particles having a volume-average particle size of 20 to 500 nm, with a water-soluble cellulose compound adsorbing on surfaces of the small polymer particles, and thereby obtaining composite particles which contain the small polymer particles and large polymer particles greater than the small polymer particles.

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Nara, Japan

Akiyoshi Kusaka