公开(公告)号：US11505730B2

公开(公告)日：2022-11-22

申请号：US16612507

申请日：2018-05-11

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Laura M. Lara Rodriguez ,  Chainika Jangu ,  Scott R. Culler ,  Negus B. Adefris ,  Gregory S. Mueller ,  Jon T. Schwartz ,  Brian G. Koethe ,  Robinette S. Alkhas ,  Ronald D. Apple ,  Ernest L. Thurber

IPC: C09K3/14 ,  B24D3/00 ,  B24D13/04 ,  B24D18/00 ,  C01F7/441

Abstract: Various embodiments disclosed relate to an abrasive article (10). The abrasive article (10 includes a backing (12) defining a major surface. The abrasive article (10) includes an abrasive layer including a plurality of tetrahedral abrasive particles (16) attached to the backing (12). The tetrahedral abrasive particles (16) include four faces joined by six edges terminating at four vertices (40, 42, 44, 46). Each one of the four faces contacts three of the four faces, and a major portion of the tetrahedral abrasive particles (16) have at least one of the vertices (40, 42, 44, 46) oriented in substantially a same direction.

公开(公告)号：US20230356362A1

公开(公告)日：2023-11-09

申请号：US18029501

申请日：2021-08-19

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Ernest L. Thurber ,  Thomas J. Nelson ,  Gregory P. Sorenson ,  Junting Li ,  Daniel M. Lentz ,  Brian G. Koethe ,  Jon T. Schwartz ,  Jing Zhang ,  Ann M. Hawkins ,  Geoffrey I. Wilson ,  Blake R. Rustad ,  Gregory S. Mueller

IPC: B24D3/34 ,  B24D3/28

CPC classification number: B24D3/344 ,  B24D3/28

Abstract: A method of making a coated abrasive article comprises sequential steps: disposing a curable composition on a major surface of a backing b) adhering abrasive particles to the curable composition; c) at least partially curing the free-radically polymerizable component; and d) at least partially curing the phenolic resin component to provide an at least partially cured composition. The curable composition comprises a phenolic resin component, a free-radically polymerizable component, and an organic polymeric rheology modifier, wherein the organic polymeric rheology modifier comprises an alkali-swellable/soluble polymer, and wherein, on a solid basis, the organic polymeric rheology modifier comprises from 0.001 to 5 weight percent of the phenolic resin component, the free-radically polymerizable component, and the organic polymeric rheology modifier combined. A variant wherein step b) effectively occurs after step c) is also disclosed. Abrasive articles made according to the methods are also disclosed.