Invention Grant
- Patent Title: Near infrared-reflective black pigment and method for producing same
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Application No.: US16490126Application Date: 2018-03-07
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Publication No.: US11325842B2Publication Date: 2022-05-10
- Inventor: Takeshi Fujimura , Norihiko Sanefuji , Kenji Kataoka
- Applicant: ISHIHARA SANGYO KAISHA, LTD.
- Applicant Address: JP Osaka
- Assignee: ISHIHARA SANGYO KAISHA, LTD.
- Current Assignee: ISHIHARA SANGYO KAISHA, LTD.
- Current Assignee Address: JP Osaka
- Agency: Melcher Patent Law PLLC
- Agent Jeffrey S. Melcher
- Priority: JPJP2017-049174 20170314
- International Application: PCT/JP2018/008705 WO 20180307
- International Announcement: WO2018/168596 WO 20180920
- Main IPC: C01G45/00
- IPC: C01G45/00 ; C09D7/62

Abstract:
Provided is a method for producing a near infrared-reflective black pigment containing at least the element calcium, the element titanium, and the element manganese, wherein the method produces a pigment that exhibits little of the elution of the element calcium and the element manganese that is caused by contact with acid. At least a calcium compound, a titanium compound, and a manganese compound are mixed by a wet grinding method and are calcined to provide a BET specific surface area of at least 1.0 m2/g and less than 3.0 m2/g. In another method, the element bismuth and/or the element aluminum is incorporated in a near infrared-reflective black pigment containing at least the element calcium, the element titanium, and the element manganese.
Public/Granted literature
- US20200071187A1 NEAR INFRARED-REFLECTIVE BLACK PIGMENT AND METHOD FOR PRODUCING SAME Public/Granted day:2020-03-05
Information query
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