# US 11,027,397 B2 · Coated abrasives having a performance enhancing composition

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- Number: US 11,027,397 B2
- Document ID: US11027397B2
- Status: Granted
- Kind: B2
- Application number: 15/850,896
- Filed: 2017-12-21
- Published: 2018-07-05
- Granted: 2021-06-08
- Earliest claimed: 2016-12-23
- Assignees: Saint-Gobain Abrasives, Inc.; Saint-Gobain Abrasifs
- Applicants: Saint-Gobain Abrasives, Inc.; Saint-Gobain Abrasifs
- Inventors: Charles G. Herbert; William C. Rice; Jianna Wang; Robin Barabasz; Shih-Chieh Kung
- Web page: https://patentgrep.com/patent/US11027397B2

## CPC

- B24D 3/005: {the constituent being used during pre- or after-treatment (B24D3/348 takes precedence)}
- B24D 3/342: {incorporated in the bonding agent}
- B24D 3/346: {utilised during polishing, or grinding operation}
- B24D: TOOLS FOR GRINDING, BUFFING OR SHARPENING (abrading-bodies specially designed for tumbling apparatus, e.g. abrading-balls B24B31/14; honing tools B24B33/08; lapping tools B24B37/11)

## Abstract

The present disclosure relates generally to coated abrasive articles that include a tribological performance enhancing composition in a make coat, a size coat, a supersize coat, or combinations thereof, as well as methods of making coated abrasive articles. The present disclosure also relates to coated abrasive articles including a supersize coating comprising a sulfide scavenging composition and/or a crosslinked zinc acrylic binder, as well as methods for making and using such abrasive articles. The present disclosure also relates generally to abrasive articles that include aggregates having an anti-wear composition or grinding aid disposed on or within the aggregates.

## Claims

### Claim 1

A fixed abrasive article, comprising:
a substrate;
an abrasive layer disposed on the substrate, wherein the abrasive layer comprises a plurality of abrasive particles disposed on or in a polymeric make coat binder composition; and
a size coat disposed over the abrasive layer, wherein the size coat comprises a polymeric size coat binder composition; and
a supersize coat disposed over the size coat, wherein the supersize coat comprises a tribological performance enhancing composition disposed on or in a polymeric supersize coat binder composition, and wherein the tribological performance enhancing composition comprises a performance enhancing mixture of: boric acid (B(OH)3) or a borate compound; a zinc compound; and a polyphosphate ester.

### Claim 2 (depends on 1)

The fixed abrasive article of claim 1, wherein the tribological performance enhancing composition comprises:
20 to 40 wt. % of boric acid (B(OH)3) or a borate compound; and
10 to 30 wt. % of a zinc compound.

### Claim 3 (depends on 2)

The fixed abrasive article of claim 2, wherein the tribological performance enhancing mixture further comprises:
20 to 30 wt. % of a polyphosphate ester.

### Claim 4 (depends on 3)

The fixed abrasive article of claim 3, wherein the performance enhancing mixture further comprises a hypophosphite salt.

### Claim 5 (depends on 4)

The fixed abrasive article of claim 4, wherein the performance enhancing mixture further comprises cellulose.

### Claim 6 (depends on 1)

The fixed abrasive of claim 1, wherein the zinc compound comprises zinc borate, zinc phosphate, zinc stearate, zinc ammonium carbonate, sodium zinc polyphosphate, or a combination thereof.

### Claim 7 (depends on 1)

The fixed abrasive of claim 1, wherein the borate compound comprises potassium tetraborate, potassium pentaborate; ammonium pentaborate, calcium borate (colemanite), sodium borate (borax), tourmaline (borosilicate with aluminum), kernite (hydrated sodium borate), ulexite (hydrated sodium calcium hydroxide), howlite (borosilicate), meherhoffite (calcium silicon borate) or a combination thereof.