Invention Grant
- Patent Title: Elongated abrasive particles, method of making the same, and abrasive articles containing the same
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Application No.: US16649031Application Date: 2018-09-14
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Publication No.: US11274237B2Publication Date: 2022-03-15
- Inventor: Dwight D. Erickson , Negus B. Adefris
- Applicant: 3M INNOVATIVE PROPERTIES COMPANY
- Applicant Address: US MN St. Paul
- Assignee: 3M INNOVATIVE PROPERTIES COMPANY
- Current Assignee: 3M INNOVATIVE PROPERTIES COMPANY
- Current Assignee Address: US MN St. Paul
- Agent Bradford B. Wright
- International Application: PCT/IB2018/057061 WO 20180914
- International Announcement: WO2019/069157 WO 20190411
- Main IPC: C09K3/14
- IPC: C09K3/14

Abstract:
A method of making elongated abrasive particles includes five steps. Step 1) includes providing a mold having parallel linear grooves, partially interrupted at predetermined intervals by transverse obstructions. Step 2) includes filling the parallel linear grooves with a flowable abrasive particle precursor composition. Step 3) includes at least partially drying the flowable abrasive particle precursor composition to form an at least partially dried abrasive particle precursor composition. Step 4) includes separating that composition from the mold, thereby forming elongated precursor abrasive particles having a shape corresponding to portions of the parallel linear grooves disposed between the transverse obstructions. At least one of the first and second opposite ends of the elongated precursor abrasive particles comprises both a molded portion and a fractured portion. Step 5) converts the elongated precursor abrasive particles into elongated abrasive particles. Elongated abrasive particles preparable by the method and abrasive articles containing them are also disclosed.
Public/Granted literature
- US20200231851A1 ELONGATED ABRASIVE PARTICLES, METHOD OF MAKING THE SAME, AND ABRASIVE ARTICLES CONTAINING THE SAME Public/Granted day:2020-07-23
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