US 12,434,351 B2
Polymer bond abrasive articles including continuous polymer matrix, and methods of making same
Tianyu Wu, St. Paul, MN (US); Gareth A. Hughes, St. Paul, MN (US); Bruce A. Sventek, Woodbury, MN (US); Fabian Stolzenburg, Woodbury, MN (US); Jing Chen, Newark, CA (US); Gregory A. Kobussen, Woodbury, MN (US); and Robert L.W. Smithson, Mahtomedi, MN (US)
Assigned to 3M Innovative Properties Company, St. Paul, MN (US)
Appl. No. 17/775,639
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
PCT Filed Dec. 4, 2020, PCT No. PCT/IB2020/061524
§ 371(c)(1), (2) Date May 10, 2022,
PCT Pub. No. WO2021/116859, PCT Pub. Date Jun. 17, 2021.
Claims priority of provisional application 62/947,169, filed on Dec. 12, 2019.
Prior Publication US 2022/0395961 A1, Dec. 15, 2022
Int. Cl. B24D 3/34 (2006.01); B24D 18/00 (2006.01); B29C 64/124 (2017.01); B33Y 10/00 (2015.01); B33Y 70/10 (2020.01); B29K 105/00 (2006.01); B29K 105/16 (2006.01); B29K 509/04 (2006.01)
CPC B24D 3/344 (2013.01) [B24D 18/0072 (2013.01); B29C 64/124 (2017.08); B33Y 10/00 (2014.12); B33Y 70/10 (2020.01); B24D 2203/00 (2013.01); B29K 2105/0044 (2013.01); B29K 2105/16 (2013.01); B29K 2509/04 (2013.01); B29K 2995/007 (2013.01); B29K 2995/0097 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method of making a polymer bond abrasive article, the method comprising:
a) obtaining a photocurable composition liquid dispersion comprising:
i) at least one photocurable monomer;
ii) abrasive particles;
iii) a photoinitiator; and
iv) an optical brightener;
b) selectively curing a portion of the photocurable composition; and
c) repeating steps a) and b) to form the polymer bond abrasive article comprising a continuous photocured polymer matrix comprising abrasive particles retained therein and the optical brightener, and wherein the polymer bond abrasive article has a three-dimensional shape.