US5368618A
Expired / Lapsed
US
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Method of making a coated abrasive article
Assignee: 3M Co
•
Filing: 1992-11-03
•
Granted: 1994-11-29
•
Expires: 2012-11-03
Abstract
Abstract A method of preparing a coated abrasive article in which the presence of multiple layers of abrasive grains are minimized. In one variation, the method comprises the steps of: (a) providing a backing; (b) applying a make coat precursor to the backing; (c) partially curing the make coat precursor; (d) applying, preferably by projecting, a plurality of abrasive grains into the partially cured make coat precursor; and (e) completely curing the partially cured make coat precursor. In another variation of this method, a size coat precursor is applied over the abrasive grains and cured make coat, and the size coat precursor is completely cured. In another variation of this method, a size coat precursor is applied over the abrasive grains and the partially cured make coat precursor, and the make coat precursor and the size coat precursor are completely cured. The make coat precursor preferably comprises an unsaturated resin that polymerizes via a free radical polymerization mechanism at the site of α,β-unsaturation.
Inventors
- 👤 Craig A. Masmar
- 👤 Douglas S. Spencer
- 👤 Elizabeth C. Edblom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:25
CPC Classifications
B; B05; B05D; B05D5/00; B29; B29C; B29C39/00; B29C39/14; B29C39/18; B24; B24D; B24D11/00; B24D11/001; B24D11/005; B24D3/00; B24D3/02; B24D3/20; B24D3/28; B24D3/34; B24D3/342; B29C70/00; B29C70/58; B29C70/64; B29C2791/00; B29C2791/001; B29K; B29K2105/00; B29K2105/24; B29L; B29L2031/00; B29L2031/736
Claims Analysis
Total Claims: 44
Claim 1
Independent Claim
56 words
A method of preparing a coated abrasive article comprising the steps of: (a) providing a backing; (b) applying a make coat precursor to said backing; (c) partially curing said make coat precursor; (d) applying a plurality of abrasive grains into said partially cured make coat precursor; and (e) completely curing said partially cured make coat precursor.
Claim 2
Independent Claim
56 words
A method of preparing a coated abrasive article comprising the steps of: (a) providing a backing; (b) applying a make coat precursor to said backing; (c) partially curing said make coat precursor; (d) applying a plurality of abrasive grains into said partially cured make coat precursor; and (e) completely curing said partially cured make coat precursor.
Claim 3
Dependent Claim
42 words
The method of claim 1, wherein said make coat precursor comprises a resin selected from the group consisting of unsaturated resins that polymerize via a free radical polymerization mechanism at the site of α,β-unsaturation, radiation curable resins, and combinations of the foregoing.
Claim 4
Dependent Claim
15 words
The method of claim 2, wherein said make coat precursor further comprises a thermosetting resin.
Claim 5
Dependent Claim
33 words
The method of claim 3, wherein said thermosetting resin is selected from the group consisting of phenolic resins, acrylate resins, aminoplast resins, epoxy resins, urethane resins, polyester resins, urea-formaldehyde resins, and combinations thereof.
Claim 6
Dependent Claim
14 words
The method of claim 2, wherein said unsaturated resin is an α,β-unsaturated carbonyl resin.
Claim 7
Dependent Claim
27 words
The method of claim 2, wherein said unsaturated resin is a member selected from the group consisting of acrylate resins, methacrylate resins, acrylamide resins, and methacrylamide resins.
Claim 8
Dependent Claim
15 words
The method of claim 1, wherein curing is initiated by a source of free radicals.
Claim 9
Dependent Claim
28 words
The method of claim 1, wherein said make coat precursor includes a member selected from the group consisting of curing agent, initiator, and both curing agent and initiator.
Claim 10
Dependent Claim
36 words
The method of claim 1, wherein said make coat precursor further includes an additive selected from the group consisting of fillers, fibers, lubricants, grinding aids, wetting agents, surfactants, pigments, dyes, coupling agents, plasticizers, and suspending agents.
Claim 11
Dependent Claim
20 words
The method of claim 1, wherein said make coat precursor comprises a free radically curable resin and a thermosetting resin.
Claim 12
Dependent Claim
19 words
The method of claim 1, wherein said make coat precursor comprises a radiation curable resin and a thermosetting resin.
Claim 13
Dependent Claim
31 words
The method of claim 1, wherein said make coat precursor comprises an unsaturated resin that polymerizes via a free radical polymerization mechanism at the site of α,β-unsaturation and a thermosetting resin.
Claim 14
Dependent Claim
13 words
The method of claim 8, wherein said initiator is in a liquid state.
Claim 15
Independent Claim
78 words
A method for preparing a coated abrasive article comprising the steps of: (a) providing a backing; (b) applying a make coat precursor to said backing; (c) partially curing said make coat precursor; (d) applying a plurality of abrasive grains into said partially cured make coat precursor; (e) completely curing said partially cured make coat precursor; (f) applying a size coat precursor over said abrasive grains and said cured make coat; and (g) completely curing said size coat precursor.
Claim 16
Independent Claim
78 words
A method for preparing a coated abrasive article comprising the steps of: (a) providing a backing; (b) applying a make coat precursor to said backing; (c) partially curing said make coat precursor; (d) applying a plurality of abrasive grains into said partially cured make coat precursor; (e) completely curing said partially cured make coat precursor; (f) applying a size coat precursor over said abrasive grains and said cured make coat; and (g) completely curing said size coat precursor.
Claim 17
Dependent Claim
42 words
The method of claim 14, wherein said make coat precursor comprises a resin selected from the group consisting of unsaturated resins that polymerize via a free radical polymerization mechanism at the site of α,β-unsaturation, radiation curable resin, and combinations of the foregoing.
Claim 18
Dependent Claim
14 words
The method of claim 15, wherein said unsaturated resin is an α,β-unsaturated carbonyl resin.
Claim 19
Dependent Claim
27 words
The method of claim 15, wherein said unsaturated resin is a member selected from the group consisting of acrylate resins, methacrylate resins, acrylamide resins, and methacrylamide resins.
Claim 20
Dependent Claim
15 words
The method of claim 14, wherein curing is initiated by a source of free radicals.
Claim 21
Dependent Claim
28 words
The method of claim 14, wherein said make coat precursor includes a member selected from the group consisting of curing agent, initiator, and both curing agent and initiator.
Claim 22
Dependent Claim
36 words
The method of claim 14, wherein said make coat precursor further includes an additive selected from the group consisting of fillers, fibers, lubricants, grinding aids, wetting agents, surfactants, pigments, dyes, coupling agents, plasticizers, and suspending agents.
Claim 23
Dependent Claim
27 words
The method of claim 14, wherein said size coat precursor comprises a glutinous adhesive or a resinous adhesive or both a glutinous adhesive and a resinous adhesive.
Claim 24
Dependent Claim
15 words
The method of claim 15, wherein said make coat precursor further comprises a thermosetting resin.
Claim 25
Dependent Claim
33 words
The method of claim 22, wherein said thermosetting resin is selected from the group consisting of phenolic resins, acrylate resins, aminoplast resins, epoxy resins, urethane resins, polyester resins, urea-formaldehyde resins, and combinations thereof.
Claim 26
Dependent Claim
20 words
The method of claim 14, wherein said make coat precursor comprises a free radically curable resin and a thermosetting resin.
Claim 27
Dependent Claim
19 words
The method of claim 14, wherein said make coat precursor comprises a radiation curable resin and a thermosetting resin.
Claim 28
Dependent Claim
31 words
The method of claim 14, wherein said make coat precursor comprises an unsaturated resin that polymerizes via a free radical polymerization mechanism at the site of α,β-unsaturation and a thermosetting resin.
Claim 29
Dependent Claim
13 words
The method of claim 19, wherein said initiator is in a liquid state.
Claim 30
Independent Claim
78 words
A method for preparing a coated abrasive article comprising the steps of: (a) providing a backing; (b) applying a make coat precursor to said backing; (c) partially curing said make coat precursor; (d) applying a plurality of abrasive grains into said partially cured make coat precursor; (e) applying a size coat precursor over said abrasive grains and said partially cured make coat precursor; and (f) completely curing said partially cured make coat precursor and said size coat precursor.
Claim 31
Independent Claim
78 words
A method for preparing a coated abrasive article comprising the steps of: (a) providing a backing; (b) applying a make coat precursor to said backing; (c) partially curing said make coat precursor; (d) applying a plurality of abrasive grains into said partially cured make coat precursor; (e) applying a size coat precursor over said abrasive grains and said partially cured make coat precursor; and (f) completely curing said partially cured make coat precursor and said size coat precursor.
Claim 32
Dependent Claim
42 words
The method of claim 28, wherein said make coat precursor comprises a resin selected from the group consisting of unsaturated resins that polymerize via a free radical polymerization mechanism at the site of α,β-unsaturation, radiation curable resin, and combinations of the foregoing.
Claim 33
Dependent Claim
14 words
The method of claim 29, wherein said unsaturated resin is an α,β-unsaturated carbonyl resin.
Claim 34
Dependent Claim
27 words
The method of claim 29, wherein said unsaturated resin is a member selected from the group consisting of acrylate resins, methacrylate resins, acrylamide resins, and methacrylamide resins.
Claim 35
Dependent Claim
15 words
The method of claim 28, wherein curing is initiated by a source of free radicals.
Claim 36
Dependent Claim
28 words
The method of claim 28, wherein said make coat precursor includes a member selected from the group consisting of curing agent, initiator, and both curing agent and initiator.
Claim 37
Dependent Claim
36 words
The method of claim 28, wherein said make coat precursor further includes an additive selected from the group consisting of fillers, fibers, lubricants, grinding aids, wetting agents, surfactants, pigments, dyes, coupling agents, plasticizers, and suspending agents.
Claim 38
Dependent Claim
27 words
The method of claim 28, wherein said size coat precursor comprises a glutinous adhesive or a resinous adhesive or both a glutinous adhesive and a resinous adhesive.
Claim 39
Dependent Claim
15 words
The method of claim 29, wherein said make coat precursor further comprises a thermosetting resin.
Claim 40
Dependent Claim
33 words
The method of claim 36, wherein said thermosetting resin is selected from the group consisting of phenolic resins, acrylate resins, aminoplast resins, epoxy resins, urethane resins, polyester resins, urea-formaldehyde resins, and combinations thereof.
Claim 41
Dependent Claim
20 words
The method of claim 28, wherein said make coat precursor comprises a free radically curable resin and a thermosetting resin.
Claim 42
Dependent Claim
19 words
The method of claim 28, wherein said make coat precursor comprises a radiation curable resin and a thermosetting resin.
Claim 43
Dependent Claim
31 words
The method of claim 28, wherein said make coat precursor comprises an unsaturated resin that polymerizes via a free radical polymerization mechanism at the site of αβ-unsaturation and a thermosetting resin.
Claim 44
Dependent Claim
13 words
The method of claim 33, wherein said initiator is in a liquid state.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-11-28 | 1998-05-30 | 1998-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-11-28 | 2002-05-30 | 2002-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-11-28 | 2006-05-30 | 2006-11-29 | $7700.00 | Window Closed / Lapsed |