Patent EP0615816A1 successfully refreshed from Google Patents.
EP0615816A1
Expired / Lapsed
EP
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Coated abrasive article having diluent particles and shaped abrasive particles
Assignee: 3M Co
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Filing: 1994-03-17
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Granted: —
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Expires: 2014-03-17
Abstract
Abstract Coated abrasive articles containing particles having specified shapes. The coated abrasive article comprises: a. a backing having two major surfaces; b. at least one binder; c. an abrasive coating comprising shaped abrasive particles and diluent particles said at least one binder serving to bond the abrasive coating to the backing. The diluent particles can comprise (1) a plurality of individual abrasive particles bonded together by an adhesive to form an agglomerate, (2) a plurality of individual non-abrasive particles bonded together by an adhesive to form an agglomerate, (3) a plurality of individual abrasive particles and a plurality of individual non-abrasive particles bonded together by an adhesive to form an agglomerate, (4) individual non-abrasive particles, (5) individual abrasive particles, or (6) combinations of the foregoing.
Inventors
- 👤 David E. C/O Minnesota Mining And Broberg
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 04:34
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/14; C09K3/1409; C09K3/1418; B; B24; B24B; B24B1/00; B24D; B24D11/00; B24D11/001; B24D3/00; B24D3/001; B24D3/002; B24D3/02; B24D3/20; B24D3/28; B24D3/34
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
48 words
A coated abrasive article comprising: a. a backing having two major surfaces; b. at least one binder; c. an abrasive coating comprising shaped abrasive particles and diluent particles, said at least one binder serving to bond said abrasive coating to at least one major surface of said backing.
Claim 2
Dependent Claim
48 words
A coated abrasive article comprising: a. a backing having two major surfaces; b. at least one binder; c. an abrasive coating comprising shaped abrasive particles and diluent particles, said at least one binder serving to bond said abrasive coating to at least one major surface of said backing.
Claim 3
Dependent Claim
35 words
A coated abrasive article according to claim 1, wherein at least a portion of said shaped abrasive particles have shapes that can be characterized as thin bodies having faces of triangular, rectangular, or circular shapes.
Claim 4
Dependent Claim
17 words
A coated abrasive article according to claim 2, wherein said faces have substantially the same geometric shape.
Claim 5
Dependent Claim
40 words
A coated abrasive article according to claim 2 or 3, wherein the ratio of the length of the shortest facial dimension of said shaped abrasive particles to the thickness of said shaped abrasive particles is at least 1 to 1.
Claim 6
Dependent Claim
40 words
A coated abrasive article according to claim 2 or 3, wherein the ratio of the length of the shortest facial dimension of said shaped abrasive particles to the thickness of said shaped abrasive particles is at least 2 to 1.
Claim 7
Dependent Claim
26 words
A coated abrasive article according to claim 1, wherein at least a portion of said shaped abrasive particles have shapes that can be characterized as rods.
Claim 8
Dependent Claim
35 words
A coated abrasive article according to claim 6, wherein said rods have a length and a maximum cross-sectional dimension, the ratio of said length to said maximum cross-sectional dimension being at least 1 to 1.
Claim 9
Dependent Claim
33 words
A coated abrasive article according to claim 6, wherein said rods have a length and a cross-sectional dimension, the ratio of said length to said cross-sectional dimension being at least 2 to 1.
Claim 10
Dependent Claim
20 words
A coated abrasive article according to any of claims 1 to 8, wherein said shaped abrasive particles comprise alpha alumina.
Claim 11
Dependent Claim
63 words
A coated abrasive article according to claim 9, wherein said shaped abrasive particles comprise alpha alumina and a metal oxide selected from the group consisting of magnesia, zinc oxide, iron oxide, silicon oxide, cobalt oxide, nickel oxide, zirconia, hafnia, chromia, yttria, praseodymium oxide, samarium oxide, ytterbium oxide, neodymium oxide, lanthanum oxide, gadolinium oxide, ceria, dysprosium oxide, erbium oxide, titanium oxide, and mixtures thereof.
Claim 12
Dependent Claim
20 words
A coated abrasive article according to claim 9, wherein said shaped abrasive particles comprise alpha alumina and a nucleating agent.
Claim 13
Dependent Claim
34 words
A coated abrasive article according to claim 11, wherein said nucleating agent is selected from the group selected consisting of alpha alumina, alpha ferric oxide or its precursors thereof, titanium oxides, titanates, and chromia.
Claim 14
Dependent Claim
97 words
A coated abrasive article according to any of claims 1 to 12, wherein at least a portion of said diluent particles are selected from the group consisting of (1) a plurality of individual abrasive particles bonded together by an adhesive to form an agglomerate, (2) a plurality of individual non-abrasive particles bonded together by an adhesive to form an agglomerate, (3) a plurality of individual abrasive particles and a plurality of individual non-abrasive particles bonded together by an adhesive to form an agglomerate, (4) individual non-abrasive particles, (5) individual abrasive particles, and (6) combinations of the foregoing.
Claim 15
Dependent Claim
15 words
A coated abrasive article according to claim 13, wherein said agglomerates further comprise an adhesive.
Claim 16
Dependent Claim
49 words
A coated abrasive article according to claim 14, wherein said adhesive is selected from the group consisting of phenolic resins, urea-formaldehyde resins, ethylenically unsaturated resins, acrylated isocyanurate resins, isocyanurate resins, acrylated methane resins, acrylated epoxy resins, bismaleimide resins, fluorene modified epoxy resins, epoxy resins, urethane resins, and aminoplast resins.
Claim 17
Dependent Claim
45 words
A coated abrasive article according to any of claims 13 to 15, wherein said abrasive particles are selected from the group consisting of fused alumina, heat treated aluminum oxide, ceramic aluminum oxide, diamond, cubic boron nitride, silicon carbide, silicon nitride, ceria, alumina zirconia, and garnet.
Claim 18
Dependent Claim
25 words
A coated abrasive article according to any of claims 13 to 16, wherein the Mohs' hardness of said non-abrasive particles is less than about 7.
Claim 19
Dependent Claim
51 words
A coated abrasive article according to any of claims 13 to 17, wherein said non-abrasive particles are selected from the group consisting of metal carbonates, silica, silicates, metal sulfates, gypsum, vermiculite, wood flour, aluminum trihydrate, carbon black, metal oxides, metal sulfites, halide salts, sulfur, organic sulfur compounds, graphite, and metallic sulfides.
Claim 20
Dependent Claim
21 words
A coated abrasive article according to any of claims 1 to 18, wherein said abrasive coating comprises at least two layers.
Claim 21
Dependent Claim
34 words
A coated abrasive article according to claim 19, wherein at least one layer of said two layers comprises diluent particles and the other layer of said at least two layers comprises shaped abrasive particles.
Claim 22
Dependent Claim
27 words
A coated abrasive article according to claim 20, wherein said at least one layer comprising shaped abrasive particles overlies said at least one layer comprising diluent particles.
Claim 23
Dependent Claim
26 words
A coated abrasive article according to any of claims 1 to 21, wherein said abrasive coating comprises a blend of shaped abrasive grains and diluent particles.
Claim 24
Dependent Claim
22 words
A coated abrasive article according to any of claim 1 to 22, wherein said at least one binder comprises a make coat.
Claim 25
Dependent Claim
13 words
A coated abrasive article according to claim 23, further including a size coat.
Claim 26
Dependent Claim
37 words
A coated abrasive article according to any of claims 1 to 24, wherein the ratio of the size of said shaped abrasive particles to the size of said diluent particles ranges from about 2.5:1 to about 0.5:1.
Claim 27
Independent Claim
65 words
A method for preparing a coated abrasive article according to any of claims 1 to 25 comprising the steps of: a. providing said backing; b. applying a first binder over one major surface of said backing; c. applying said diluent particles onto said first binder; d. applying said shaped abrasive particles onto said coated diluent particles; and e. at least partially curing said first binder.
Claim 28
Dependent Claim
44 words
A method of according to claim 26, further including the steps of: a. applying a second binder over said shaped abrasive particles, said diluent particles, and said first binder after said first binder is at least partially cured; and b. curing said second binder.
Claim 29
Dependent Claim
19 words
A method according to claim 26 or 27 wherein said diluent particles are applied by means of drop coating.
Claim 30
Dependent Claim
20 words
A method according to claim 26 or 27 wherein said shaped abrasive particles are applied by means of electrostatic coating.
References Cited (Backward Citations)
CA802150A
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DE3042643A1
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EP0228856A2
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EP0471389A2
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US5011512A
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