US 12,459,081 B2
Treated backing and coated abrasive article including the same
Ernest L. Thurber, Somerset, WI (US); Yu Yang, Eden Prairie, MN (US); Junting Li, Woodbury, MN (US); Liming Song, Woodbury, MN (US); Stephen M. Sanocki, Hudson, WI (US); Yuyang Liu, St. Paul, MN (US); Michelle L. Conklin, Woodbury, MN (US); Morgan A. Priolo, Woodbury, MN (US); Amelia W. Koenig, St. Paul, MN (US); and Yaohua Gao, Woodbury, MN (US)
Assigned to 3M Innovative Properties Company, St. Paul, MN (US)
Appl. No. 17/283,171
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
PCT Filed Oct. 1, 2019, PCT No. PCT/IB2019/058352
§ 371(c)(1), (2) Date Apr. 6, 2021,
PCT Pub. No. WO2020/075006, PCT Pub. Date Apr. 16, 2020.
Claims priority of provisional application 62/743,308, filed on Oct. 9, 2018.
Prior Publication US 2021/0387310 A1, Dec. 16, 2021
Int. Cl. B24D 3/00 (2006.01); B24D 11/02 (2006.01)
CPC B24D 3/004 (2013.01) [B24D 11/02 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A coated abrasive article comprising:
a backing comprising polyester and having a first major surface and a second major surface and a thickness of at least 0.02 mm and less than 5 mm;
a tie layer directly bound to at least a portion of the first major surface, wherein the tie layer comprises an at least partially cured blend of, on a solids basis,
from 50 to 99 parts by weight of at least one styrene-butadiene copolymer latex wherein the styrene-butadiene copolymer comprises carboxylated styrene-butadiene copolymer;
from 1 to 50 parts by weight of a tie layer resin, the tie-layer resin comprising a Novolac resorcinol-formaldehyde resin,
and wherein the tie layer is acidic; and
an abrasive layer directly bound to at least a portion of the tie layer, the abrasive layer comprising abrasive particles and a make resin in contact with the tie layer, wherein the make resin comprises a different composition from the tie layer resin, and wherein the make resin comprises a phenolic resin.