Invention Grant
- Patent Title: Porous resin particles, method of manufacturing porous resin particles, dispersion liquid, and use of porous resin particles
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Application No.: US14781093Application Date: 2014-03-20
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Publication No.: US09982106B2Publication Date: 2018-05-29
- Inventor: Shinya Matsuno , Masaaki Nakamura
- Applicant: Sekisui Plastics Co., Ltd.
- Applicant Address: JP Osaka
- Assignee: SEKISUI PLASTICS CO., LTD.
- Current Assignee: SEKISUI PLASTICS CO., LTD.
- Current Assignee Address: JP Osaka
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: JP2013-074210 20130329
- International Application: PCT/JP2014/057860 WO 20140320
- International Announcement: WO2014/156994 WO 20141002
- Main IPC: C08J9/14
- IPC: C08J9/14 ; A61Q1/12 ; A61K8/81 ; C09D135/02 ; A61K8/02 ; A61Q1/02 ; C08F2/26 ; C08J3/12

Abstract:
Disclosed are porous resin particles which contain a polymer of a monomer mixture of a mono(meth)acrylate-based monomer and a polyfunctional vinyl-based monomer. The mono(meth)acrylate-based monomer contains an ethylenic unsaturated group only in a (meth)acrylic acid residue, a hydroxyl group in an alcohol residue, and at least one of an ether group and an ester group in an alcohol residue. The polyfunctional vinyl-based monomer contains two or more ethylenic unsaturated groups. The porous resin particles have a water absorption value of from more than 400 ml to 700 ml per 100 g of the particles and an oil absorption value of from more than 400 ml to 700 ml per 100 g of the particles.
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