Invention Grant
- Patent Title: Microparticulate hydrotalcite, method for producing same, resin composition of same, and suspension of same
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Application No.: US16494657Application Date: 2018-03-15
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Publication No.: US11591234B2Publication Date: 2023-02-28
- Inventor: Kotaro Mori , Shigeo Miyata
- Applicant: KYOWA CHEMICAL INDUSTRY CO., LTD.
- Applicant Address: JP Kagawa
- Assignee: KYOWA CHEMICAL INDUSTRY CO., LTD.
- Current Assignee: KYOWA CHEMICAL INDUSTRY CO., LTD.
- Current Assignee Address: JP Kagawa
- Agency: Fitch, Even, Tabin & Flannery LLP
- Priority: JPJP2017-053006 20170317,JPJP2017-215084 20171107
- International Application: PCT/JP2018/010338 WO 20180315
- International Announcement: WO2018/169019 WO 20180920
- Main IPC: C01F7/00
- IPC: C01F7/00 ; C08K3/26 ; C08K9/02 ; C08K9/06 ; C08L27/06 ; C01F7/785 ; B82Y30/00 ; B82Y40/00

Abstract:
A hydrotalcite is represented by formula (1): (M2+)1-X(M3+)X(OH)2(An−)X/n·mH2O (1), wherein M2+ indicates a divalent metal, M3+ indicates a trivalent metal, An− indicates an n-valent anion, n indicates an integer of 1 to 6, 0.17≤x≤0.36, and 0≤m≤10. The hydrotalcite has (A) a lattice strain in the direction is 3×10−3 or less as measured using an X-ray diffraction method; (B) primary particles with an average width between 5 nm and 200 nm inclusive per a SEM method; and (C) a degree of monodispersity of 50% or greater (degree of monodispersity (%)=(average width of primary particles as measured using the SEM method/average width of secondary particles as measured using a dynamic light scattering method)×100). A resin containing the hydrotalcite, a suspension containing the hydrotalcite and a method for producing the hydrotalcite are disclosed.
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