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US 11,230,628 B2Granted
Resin microparticle production method and resin particles
AssigneeSumitomo Chemical Company, Limited
InventorsKenji Gouda, Toshiaki Sugimura, Shinji Ohtomo
Life of this patent
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Abstract
A resin microparticle production method includes a step of pulverizing resin particles having a thermoplastic resin as a forming material and having a BET specific surface area of equal to or more than 5 m2/g using an impact type pulverizer.
Claims12
A resin microparticle production method, comprising:
- a step of pulverizing resin particles which are a thermoplastic resin of an aromatic polyether sulfone having a BET specific surface area of equal to or more than 5 m2/g using an impact type pulverizer;
- wherein a median particle diameter D50 of the resin particles is equal to or more than 200 and wherein a median particle diameter D50 of the resin microparticle is equal to or less than 100 μm.
Dependencies are inferred from the claim text.