Coated abrasives having a performance enhancing composition

Patent metadata

Field	Value
Publication number	US-11027397-B2
Application number	US-201715850896-A
Country	US
Kind code	B2
Filing date	Dec 21, 2017
Priority date	Dec 23, 2016
Publication date	Jun 8, 2021
Grant date	Jun 8, 2021

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.

First claim

What is claimed is:

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.

2. 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.

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

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

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

6. 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.

7. 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.

Assignees

• Saint Gobain Abrasives Inc
• Saint Gobain Abrasifs Sa

Inventors

• Herbert Charles G
• Rice William C
• Wang Jianna
• Barabasz Robin
• Kung Shih-Chieh

Classifications

• B24D3/342

  incorporated in the bonding agent · CPC title

• B24D3/005 Primary

  the constituent being used during pre- or after-treatment (B24D3/348 takes precedence) · CPC title

• B24D3/346

  utilised during polishing, or grinding operation · CPC title