US 11,981,000 B2
Coated abrasive articles and methods of making coated abrasive articles
Junting Li, Woodbury, MN (US); Yuyang Liu, St. Paul, MN (US); Mark A. Lukowski, St. Paul, MN (US); Ernest L Thurber, Somerset, WI (US); Brian G. Koethe, Cottage Grove, MN (US); Ann M. Hawkins, Lake Elmo, MN (US); and Geoffrey I. Wilson, Woodbury, MN (US)
Assigned to 3M Innovative Properties Company, St. Paul, MN (US)
Appl. No. 17/311,139
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
PCT Filed Dec. 6, 2019, PCT No. PCT/IB2019/060534
§ 371(c)(1), (2) Date Jun. 4, 2021,
PCT Pub. No. WO2020/128708, PCT Pub. Date Jun. 25, 2020.
Claims priority of provisional application 62/781,064, filed on Dec. 18, 2018.
Prior Publication US 2022/0016747 A1, Jan. 20, 2022
Int. Cl. B24D 18/00 (2006.01); B24D 3/34 (2006.01)
CPC B24D 18/0072 (2013.01) [B24D 3/342 (2013.01); B24D 3/346 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A coated abrasive article comprising:
a backing having first and second opposed major surfaces;
a make layer bonded to the first major surface;
agglomerate grinding aid particles directly bonded to the make layer, wherein the agglomerate grinding aid particles comprise grinding aid particles retained in a binder, and wherein at least a portion of the agglomerate grinding aid particles are arranged according to an open predetermined pattern comprising a rectangular grid, parallel stripes, a hexagonal grid, parallel wavy lines, a checkerboard pattern, a spiral pattern, or an array of partially-filled circles;
abrasive particles directly bonded to the make layer, wherein the abrasive particles are disposed in spaces between the agglomerate grinding aid particles; and
a size layer directly bonded to the make layer, agglomerate grinding aid particles, and abrasive particles.