Invention Grant
- Patent Title: Hydrophilic and highly oil absorbent boron nitride powder, method for manufacturing the same, and cosmetic
- Patent Title (中): 亲水性和高吸油性氮化硼粉末，其制造方法和化妆品
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Application No.: US14429451Application Date: 2013-08-27
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Publication No.: US09433565B2Publication Date: 2016-09-06
- Inventor: Takahisa Koshida , Masato Kumagai , Shoichi Hiwasa
- Applicant: MIZUSHIMA FERROALLOY CO., LTD.
- Applicant Address: JP Kurashiki-shi, Okayama
- Assignee: MIZUSHIMA FERROALLOY CO., LTD.
- Current Assignee: MIZUSHIMA FERROALLOY CO., LTD.
- Current Assignee Address: JP Kurashiki-shi, Okayama
- Agency: Kenja IP Law PC
- Priority: JP2012-218421 20120928
- International Application: PCT/JP2013/005045 WO 20130827
- International Announcement: WO2014/049955 WO 20140403
- Main IPC: A61K8/19
- IPC: A61K8/19 ; A61Q1/02 ; C01B21/064 ; A61K8/02
Abstract:
A boron nitride powder including flat-shaped primary particles of BN and an aggregate of the primary particles has a water permeation speed not less than 1 mm2/s and oil absorption of 100 ml/100 g to 500 ml/100 g, which is a cosmetic boron nitride powder with high hydrophilicity and high oil absorbency. The use of such a boron nitride powder provides a cosmetic that is significantly improved not only in gloss finish and transparency (bare skin feeling) but also in sustainability.
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