US 12,304,028 B2
Abrasive article with microparticle-coated abrasive grains
Brett A. Beiermann, St. Paul, MN (US); Aaron K. Nienaber, Lake Elmo, MN (US); Joseph B. Eckel, Vadnais Heights, MN (US); Maiken Givot, St. Paul, MN (US); Thomas J. Nelson, Woodbury, MN (US); Robinette S. Alkhas, St. Paul, MN (US); Dwight D. Erickson, Woodbury, MN (US); Loc X. Van, Woodbury, MN (US); and Melissa C. Schillo-Armstrong, Woodbury, MN (US)
Assigned to 3M Innovative Properties Company, St. Paul, MN (US)
Appl. No. 17/309,751
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
PCT Filed Dec. 16, 2019, PCT No. PCT/IB2019/060845
§ 371(c)(1), (2) Date Jun. 17, 2021,
PCT Pub. No. WO2020/128780, PCT Pub. Date Jun. 25, 2020.
Claims priority of provisional application 62/780,958, filed on Dec. 18, 2018.
Prior Publication US 2022/0001514 A1, Jan. 6, 2022
Int. Cl. B24D 3/34 (2006.01); C09K 3/14 (2006.01)
CPC B24D 3/346 (2013.01) [C09K 3/1436 (2013.01)] 21 Claims
OG exemplary drawing
 
1. An abrasive article comprising:
a plurality of shaped abrasive particles, each shaped abrasive particle comprising:
a monolithic ceramic particle having a first planar surface and a second planar surface, wherein the second planar surface is parallel to the first planar surface;
a microparticulate layer disposed on at least a portion of the outer surface of each of the shaped abrasive particles,
wherein the microparticulate layer comprises a plurality of microparticles dispersed in a microparticle binder; and
wherein the microparticles have an aspect ratio greater than 2; and
a second binder in which the plurality of shaped abrasive particles are embedded.