	US 12,104,094 B2
	Phenolic resin composition comprising polymerized ionic groups, abrasive articles and methods
Gregory P. Sorenson, Maplewood, MN (US); Thomas J. Nelson, Woodbury, MN (US); and Ilya Gorodisher, Stillwater, MN (US)
Assigned to 3M Innovative Properties Company, St. Paul, MN (US)
Appl. No. 16/755,606
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
PCT Filed Dec. 17, 2018, PCT No. PCT/US2018/065930 § 371(c)(1), (2) Date Apr. 13, 2020, PCT Pub. No. WO2019/125995, PCT Pub. Date Jun. 27, 2019.
Claims priority of provisional application 62/599,889, filed on Dec. 18, 2017.
Prior Publication US 2020/0332162 A1, Oct. 22, 2020
Int. Cl. C09J 161/06 (2006.01); B24D 3/28 (2006.01); B24D 11/00 (2006.01); C08J 9/00 (2006.01); C09D 161/06 (2006.01)

CPC C09J 161/06 (2013.01) [B24D 3/285 (2013.01); B24D 11/00 (2013.01); C08J 9/0066 (2013.01); C09D 161/06 (2013.01)]

20 Claims

1. A cured phenolic resin composition comprising

at least 50 wt.-% of cured phenolic resin based on a total weight of organic components of the phenolic resin composition;

first polymerized units comprising a cationic group and the cationic group is a substituted ammonium compound; and

second polymerized units comprising an anionic group;

wherein the first polymerized units comprising the cationic group and second polymerized units comprising the anionic group are first and second polymerized units of a copolymer comprising greater than 10 wt. % of polymerized units of acid functional monomer; and/or

wherein a first polymer comprises the cationic group and a second polymer comprises the anionic group; and

wherein a portion of the anionic groups or cationic groups are ionically bonded to an unpolymerized imidazole compound.