Abrasive articles and methods of forming the same

Patent metadata

Field	Value
Publication number	US-11235436-B2
Application number	US-201716314565-A
Country	US
Kind code	B2
Filing date	Jul 7, 2017
Priority date	Jul 8, 2016
Publication date	Feb 1, 2022
Grant date	Feb 1, 2022

Abstract

An abrasive article may include an organic bond material, abrasive particles contained within the organic bond material and a plasticizer contained within the organic bond material. The plasticizer may include at least one of an aromatic phenyl group, a heteroaromatic furyl group, or a saturated aliphatic hydrocarbon. The plasticizer may further include a polar group.

First claim

What is claimed is:

1. An abrasive article comprising:
an organic bond material;
abrasive particles contained within the organic bond material; and
a first plasticizer contained within the organic bond material,
wherein the first plasticizer comprises at least one of an aromatic phenyl group, a heteroaromatic furyl group, or a saturated aliphatic hydrocarbon, and wherein the first plasticizer comprises at least one polar group,
wherein the first plasticizer is a compound selected from the group consisting of methyl benzoate, ethyl benzoate, propyl benzoate, methyl anthranilate, 2′-aminoacetophenone, α-amylcinnamaldehyde, m-anisaldehyde, p-anisaldehyde, cuminaldehyde, dimethyl anthranilate, ethyl 2-aminobenzoate, 4-ethylbenzaldehyde, o-tolualdehyde, salicylaldehyde, p-tolualdehyde, and combinations thereof, and
wherein the abrasive article further comprises a ratio AAC PL /AAC OBM of at least about 0.01 and not greater than about 0.25, wherein AAC PL is a content of plasticizer in weight percent for a total weight of the abrasive article and AAC OBM is a content of organic bond material in weight percent for a total weight of the abrasive article.

2. An abrasive article comprising:
an organic bond material;
abrasive particles contained within the organic bond material; and
a first plasticizer contained within the organic bond material,
wherein the abrasive article has a crosslinking density factor of at least about 10,

wherein the first plasticizer is a compound selected from the group consisting of methyl benzoate, ethyl benzoate, propyl benzoate, methyl anthranilate, 2′-aminoacetophenone, α-amylcinnamaldehyde, m-anisaldehyde, p-anisaldehyde, cuminaldehyde, dimethyl anthranilate, ethyl 2-aminobenzoate, 4-ethylbenzaldehyde, o-tolualdehyde, salicylaldehyde, p-tolualdehyde, and combinations thereof, and
wherein the abrasive article further comprises a ratio AAC PL /AAC OBM of at least about 0.01 and not greater than about 0.25, wherein AAC PL is a content of plasticizer in weight percent for a total weight of the abrasive article and AAC OBM is a content of organic bond material in weight percent for a total weight of the abrasive article.

3. The abrasive article of claim 1 , wherein the first plasticizer further comprises a boiling point of at least about 180° C.

4. The abrasive article of claim 1 , wherein the first plasticizer further comprises a vapor pressure of not greater than about 267 pascals as measured at a temperature of 20° C.

5. The abrasive article of claim 2 , wherein the first plasticizer comprises an aromatic phenyl group, a heteroaromatic furyl group, or a saturated aliphatic hydrocarbon.

6. The abrasive article of claim 1 , wherein the first plasticizer comprises at least one functional group selected from the group consisting of an aldehyde, a ketone, an ester, an ether, an alcohol, an amine, an amide and combinations thereof.

7. The abrasive article of claim 1 , wherein the abrasive article further comprises a filler material.

8. The abrasive article of claim 7 , wherein the filler material is selected from a group consisting of sand, bubble alumina, chromites, magnesite, dolomites, bubble mullite, borides, titanium dioxide, carbon products, silicon carbide, wood flour, clay, talc, hexagonal boron nitride, molybdenum disulfide, feldspar, glass spheres, glass fibers, chlorine containing fillers, potassium chloride, complex salts of manganese, potassium, chloride, CaF 2 , Cryolite (Na 3 AlF 6 ), potassium Cryolite (K 3 AlF 6 ), pyrites, ZnS, copper sulfide, mineral oil, fluorides, carbonates, calcium carbonate, wollastonite, mullite, steel, iron, copper, brass, bronze, tin, aluminum, kyanite, alusite, garnet, quartz, fluoride, mica, nepheline syenite, sulfates, carbonates, titanates, rock wool, clay, sepiolite, iron sulfide, potassium fluoroborate (KBF 4 ), zinc borate, borax, boric acid, fine alundum powders, P15A, cork, glass spheres, silica microspheres (Z-light), silver, paradichlorobenzene, oxalic acid, alkali halides, organic halides, attapulgite and combinations thereof.

9. The abrasive article of claim 7 , wherein the abrasive article comprises a filler material content of at least about 4 wt. % and not greater than about 50 wt. % for a total weight of the abrasive article.

10. The abrasive article of claim 1 , wherein the abrasive article comprises an organic bond material content of at least about 2 wt. % and not greater than about 30 wt. % for a total weight of the abrasive article.

11. The abrasive article of claim 1 , wherein the organic bond material is selected from a group consisting of a phenolic material, a modified phenolic material, a polyimide material, a polyamide material, an epoxy material, a polyester material, a polyurethane material, a polybenzimadzole material, a rubber, a shellac, a cork and any combination thereof.

12. The abrasive article of claim 1 , wherein the abrasive article comprises an abrasive particle content of at least about 60 wt. % for a total weight of the abrasive article.

13. An abrasive article comprising: an organic bond material; abrasive particles contained within the organic bond material; a first plasticizer contained within the organic bond material; and a second plasticizer contained within the organic bond material,
wherein the second plasticizer is different than the first plasticizer,
wherein the first plasticizer is a compound selected from the group consisting of methyl benzoate, ethyl benzoate, propyl benzoate, methyl anthranilate, 2′-aminoacetophenone, α-amylcinnamaldehyde, m-anisaldehyde, p-anisaldehyde, cuminaldehyde, dimethyl anthranilate, ethyl 2-aminobenzoate, 4-ethylbenzaldehyde, o-tolualdehyde, salicylaldehyde, p-tolualdehyde, and combinations thereof,
wherein the second plasticizer is a compound selected from the group consisting of methyl benzoate, ethyl benzoate, propyl benzoate, methyl anthranilate, 2′-aminoacetophenone, α-amylcinnamaldehyde, m-anisaldehyde, p-anisaldehyde, cuminaldehyde, dimethyl anthranilate, ethyl 2-aminobenzoate, 4-ethylbenzaldehyde, o-tolualdehyde, salicylaldehyde, p-tolualdehyde, and combinations thereof, and
wherein the abrasive article further comprises a ratio AAC PL /AAC OBM of at least about 0.01 and not greater than about 0.25, wherein AAC PL is a content of plasticizer in weight percent for a total weight of the abrasive article and AAC OBM is a content of organic bond material in weight percent for a total weight of the abrasive article.

14. The abrasive article of claim 13 , wherein the abrasive article further comprises a plasticizer ratio AAC PL1 /AAC PL2 of at least about 0.2, where AAC PL1 is equal to the content of the first plasticizer in the abrasive article and AAC PL2 is equal to the content of the second plasticizer in the abrasive article.

15. The abrasive article of claim 13 , wherein the abrasive article further comprises a combined content of the first plasticizer in the abrasive article and the second plasticizer in the abrasive article is not greater than 5 wt. % for a total weight of the abrasive article.

16. The abrasive article of claim 13 , wherein a content of the first plasticizer in the abrasive article is not greater than 2.5 wt. % for a total weight of the abrasive article.

17. The abrasive article of claim 13 , wherein a content of the second plasticizer in the abrasive article is not greater than 5 wt. % for a total weight of the abrasive article.

Assignees

• Saint Gobain Abrasives Inc
• Saint Gobain Abrasifs Sa
• Univ Massachusetts

Inventors

• Schoch Andrew B
• Nashed Alexander
• Ada Carleen Sena
• Matsumoto Dean S
• Bonner Anne M
• Hsu Shaw Ling
• Patel Jigneshkumar P
• Deshmukh Subrajeet
• Zhao Caixia

Classifications

• B24D3/28

  Resins {or natural or synthetic macromolecular compounds (B24D3/22 takes precedence)} · CPC title

• B24D3/285

  Reaction products obtained from aldehydes or ketones · CPC title

• B24D3/344 Primary

  the bonding agent being organic · CPC title

• B24D3/34

  characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties · CPC title

• C09K3/1409

  Abrasive particles per se (preparation of diamond C01B32/25) · CPC title