US5453312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive article, a process for its manufacture, and a method of using it to reduce a workpiece surface
Assignee: 3M Co
•
Filing: 1993-10-29
•
Granted: 1995-09-26
•
Expires: 2013-10-29
Abstract
Abstract An abrasive article having a sheet-like structure having at least one major surface having deployed thereon a plurality of individual abrasive composites, each abrasive composite comprising a plasticizer and a plurality of abrasive particles dispersed in a binder, wherein said binder is formed by polymerizing a binder precursor and said plasticizer being combined with said binder precursor prior to said polymerizing in an amount of 30 to 70 parts plasticizer per 100 parts by weight of the combined binder precursor and plasticizer. There is also a method of using such as abrasive article to reduce the surface finish of a workpiece and a process of making the abrasive article.
Inventors
- 👤 John D. Haas
- 👤 Todd J. Christianson
- 👤 Wesley J. Bruxvoort
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:25
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/02; B24D3/20; B24D3/28; B24D11/00; B24D11/02; B24D3/34; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/932; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T428/25; Y10T428/256; Y10T428/257; Y10T428/259
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
122 words
An abrasive article comprising a sheet structure having at least one major surface having deployed thereon a plurality of individual abrasive composites, each composite comprising a plurality of abrasive particles dispersed in a plasticized crosslinked binder, and said binder having been formed by crosslinking of binder precursor via an addition polymerization mechanism, wherein said binder precursor is combined with plasticizer prior to said crosslinking in an amount of 30 to 70 parts plasticizer per 100 parts by weight of said combined binder precursor and plasticizer, wherein said composites each have a precise shape defined by a distinct and discernible boundary and each composite further comprises a distal end that is spaced from said major surface and is unconnected to any other composite.
Claim 2
Dependent Claim
122 words
An abrasive article comprising a sheet structure having at least one major surface having deployed thereon a plurality of individual abrasive composites, each composite comprising a plurality of abrasive particles dispersed in a plasticized crosslinked binder, and said binder having been formed by crosslinking of binder precursor via an addition polymerization mechanism, wherein said binder precursor is combined with plasticizer prior to said crosslinking in an amount of 30 to 70 parts plasticizer per 100 parts by weight of said combined binder precursor and plasticizer, wherein said composites each have a precise shape defined by a distinct and discernible boundary and each composite further comprises a distal end that is spaced from said major surface and is unconnected to any other composite.
Claim 3
Dependent Claim
12 words
The abrasive article of claim 1, wherein said plasticizer is a polyol.
Claim 4
Dependent Claim
32 words
The abrasive article of claim 1, wherein said plasticizer comprises a polyol selected from the group consisting of polyethylene glycol, methoxypolyethylene glycol, polypropylene glycol, polybutylene glycol, glycerol, polyvinyl alcohol, and combinations thereof.
Claim 5
Dependent Claim
13 words
The abrasive article of claim 1, wherein said plasticizer comprises a polyalkylene glycol.
Claim 6
Dependent Claim
14 words
The abrasive article of claim 4, .wherein said polyalkylene glycol is a polyethylene glycol.
Claim 7
Dependent Claim
20 words
The abrasive article of claim 5, wherein said polyethylene glycol has an average molecular weight of from 200 to 10,000.
Claim 8
Dependent Claim
40 words
The abrasive article of claim 1, wherein said plasticizer comprises polyethylene glycol and is combined with said binder precursor in an amount of 30 to 50 parts plasticizer per 100 parts by weight of said combined binder precursor and plasticizer.
Claim 9
Dependent Claim
17 words
The abrasive article of claim 1, wherein said binder precursor is crosslinked via a free radical mechanism.
Claim 10
Dependent Claim
52 words
The abrasive article of claim 1, wherein said binder precursor is selected from the group consisting of acrylated urethanes, acrylated epoxies, ethylenically unsaturated compounds, aminoplast derivatives having pendant α,β-unsaturated carbonyl groups, isocyanurate derivatives having at least one pendant acrylate group, isocyanate derivatives having at least one pendant acrylate group, and combinations thereof.
Claim 11
Dependent Claim
15 words
The abrasive article of claim 1, wherein said binder precursor comprises an ethylenically unsaturated compound.
Claim 12
Dependent Claim
15 words
The abrasive article of claim 10, wherein said ethylenically unsaturated compound comprises an acrylate monomer.
Claim 13
Dependent Claim
13 words
The abrasive article of claim 11, wherein said binder precursor comprises trimethylolpropane triacrylate.
Claim 14
Dependent Claim
39 words
The abrasive article of claim 1, wherein said abrasive particles are a material selected from the group consisting of aluminum oxide, silicon carbide, chromia, alumina zirconia, silica, diamond, iron oxide, ceria, boron nitride, boron carbide, garnet, and combinations thereof.
Claim 15
Dependent Claim
29 words
The abrasive article of claim 1, wherein said abrasive particles have a Mohs' hardness of at least 8 and a particle size of from about 0.1 to 500 micrometers.
Claim 16
Dependent Claim
20 words
The abrasive article of claim 14, wherein said abrasive size particles have a size of from 0.1 to 5 micrometers.
Claim 17
Dependent Claim
111 words
An abrasive article comprising a sheet structure having at least one major surface having deployed thereon an abrasive material comprising a plurality of abrasive particles dispersed in a plasticized crosslinked binder, and said binder having been formed by crosslinking of binder precursor via an addition polymerization mechanism, wherein said abrasive material is provided as a discontinuous raised pattern formed of a plurality of elongated three-dimensional formations extending from said major surface which define areas having no abrasive material, wherein said binder precursor is combined with plasticizer prior to said crosslinking in an amount of 30 to 70 parts plasticizer per 100 parts by weight of said combined binder precursor and plasticizer.
Claim 18
Dependent Claim
111 words
An abrasive article comprising a sheet structure having at least one major surface having deployed thereon an abrasive material comprising a plurality of abrasive particles dispersed in a plasticized crosslinked binder, and said binder having been formed by crosslinking of binder precursor via an addition polymerization mechanism, wherein said abrasive material is provided as a discontinuous raised pattern formed of a plurality of elongated three-dimensional formations extending from said major surface which define areas having no abrasive material, wherein said binder precursor is combined with plasticizer prior to said crosslinking in an amount of 30 to 70 parts plasticizer per 100 parts by weight of said combined binder precursor and plasticizer.
References Cited (Backward Citations)
US2242877A
Cited
US3042509A
Cited
US4035162A
Cited
US4311489A
Cited
US4255164A
Cited
GB2094824A
Cited
US4576612A
Cited
US4652275A
Cited
US4751138A
Cited
US4799939A
Cited
US5015266A
Cited
US4918874A
Cited
US5037451A
Cited
US5014468A
Cited
US4988554A
Cited
US5096983A
Cited
US5107626A
Cited
US5152917A
Cited
US5152917B1
Cited
US5316812A
Cited
US5219462A
Cited
US5201916A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-09-25 | 1999-03-27 | 1999-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-09-25 | 2003-03-27 | 2003-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-09-25 | 2007-03-27 | 2007-09-26 | $7700.00 | Window Closed / Lapsed |