公开(公告)号：US20210122959A1

公开(公告)日：2021-04-29

申请号：US17054182

申请日：2019-05-06

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Scott M. Mevissen ,  Mark A. Lukowski ,  Thomas J. Nelson ,  Kaylee R. Schmall ,  Myhanh T. Truong

IPC: C09K3/14 ,  C08K3/36 ,  C08K3/26 ,  C08K3/04 ,  C08K3/34 ,  B24D13/14

Abstract: The present disclosure provides an abrasive article. The abrasive article includes a base. The abrasive article further includes a plurality of soft shaped abrasive particles distributed about the base.

公开(公告)号：US20190283214A1

公开(公告)日：2019-09-19

申请号：US16430669

申请日：2019-06-04

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Mark A. Lukowski

IPC: B24D3/18 ,  C09K3/14 ,  B24D18/00 ,  B24D3/32 ,  B24D3/34

Abstract: Methods for manufacturing bonded abrasive articles, for example vitrified bonded grinding wheels. A bondable abrasive composition is prepared including abrasive particles, a binder medium and a gamma-pyrone pore inducing material, such as ethyl maltol. A precursor abrasive structure is formed from the composition. The gamma-pyrone pore inducing material is removed from the precursor abrasive structure to provide a porous precursor abrasive structure that is further processed to provide a bonded abrasive article. In some embodiments, the binder medium includes a vitreous bonding material, and the bonded abrasive article is a porous vitrified bonded grinding wheel.

公开(公告)号：US20190270921A1

公开(公告)日：2019-09-05

申请号：US16344304

申请日：2017-10-05

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Jaime A. Martinez ,  Thomas J. Nelson ,  Mark A. Lukowski

IPC: C09K3/14 ,  H01F41/16

Abstract: A method of making magnetizable abrasive particles includes providing a slurry layer disposed on a substrate. The slurry layer has an exposed surface and comprises magnetic particles, a binder precursor, and a liquid vehicle. Abrasive particles are electrostatically contacted with the slurry layer such that they are aligned substantially oriented perpendicular to the surface of the substrate, and are partially embedded within the slurry layer. The liquid vehicle is at least partially removed from the slurry layer and the binder precursor is converted into a binder to provide a magnetizable layer comprising the magnetic particles partially embedded in the binder. The magnetizable abrasive particles are separated from the releasable substrate. Each magnetizable abrasive particle respectively comprises a portion of the magnetizable layer disposed on a portion of an abrasive particle.

公开(公告)号：US20190264081A1

公开(公告)日：2019-08-29

申请号：US16343892

申请日：2017-10-12

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Aaron K. Nienaber ,  Joseph B. Eckel ,  Thomas J. Anderson ,  Thomas J. Nelson ,  Mark A. Lukowski ,  Louis S. Moren ,  Don V. West

IPC: C09K3/14 ,  C04B35/628 ,  C04B35/111

Abstract: A method of making magnetizable abrasive particles includes: moistening the outer surfaces of ceramic particles with waterglass to provide moistened ceramic particles. Magnetizable particles are contacted with the moistened ceramic particles to provide powder-coated ceramic particles. The powder-coated ceramic particles are heated to at least a temperature sufficient to bond the magnetizable particles of the powder-coated ceramic particles to the respective ceramic particles thereby providing the magnetizable abrasive particles. On a respective basis, each magnetizable abrasive particle comprises a respective ceramic particle having a magnetizable particles bonded thereto.

公开(公告)号：US20190185636A1

公开(公告)日：2019-06-20

申请号：US16099728

申请日：2017-05-11

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Brian D. Goers ,  Mark A. Lukowski ,  Walter Flaschberger ,  Ernest L. Thurber ,  John E. Gozum

IPC: C08J9/26 ,  C08F122/14 ,  C08F20/00 ,  B24D3/18 ,  B24D3/32

CPC classification number: C08J9/26 ,  B24D3/10 ,  B24D3/18 ,  B24D3/32 ,  B24D18/00 ,  B24D18/0009 ,  C08F20/00 ,  C08F122/14 ,  C08J2201/042 ,  C08J2201/0442 ,  C08J2205/10 ,  C08J2333/00 ,  C08J2335/02

Abstract: Various embodiments disclosed relate to pore inducers and porous abrasive forms made using the same. In various embodiments, the present invention provides a method of forming a porous abrasive form including heating an abrasive composition including pore inducers to form the porous abrasive form. During the heating the pore inducers in the porous abrasive form reduce in volume to form induced pores in the porous abrasive form.