Patent EP0552698A2 successfully refreshed from Google Patents.
EP0552698A2
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A method of making a coated abrasive article
Assignee: 3M Co
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Filing: 1993-01-18
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Granted: —
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Expires: 2013-01-18
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 alpha , beta -unsaturation.
Inventors
- 👤 Craig A. C/O Minnesota Mining And Masmar
- 👤 Douglas S. C/O Minnesota Mining And Spencer
- 👤 Elizabeth C. C/O Minnesota Mining And Edblom
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 05:21
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: 16
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
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 3
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 4
Independent Claim
47 words
The method of any one of Claims 1 to 3, 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 5
Dependent Claim
14 words
The method of Claim 4, wherein said unsaturated resin is an α,β-unsaturated carbonyl resin.
Claim 6
Dependent Claim
27 words
The method of Claim 4, wherein said unsaturated resin is a member selected from the group consisting of acrylate resins, methacrylate resins, acrylamide resins, and methacrylamide resins.
Claim 7
Independent Claim
20 words
The method of any one of Claims 1 to 3, wherein curing is initiated by a source of free radicals.
Claim 8
Independent Claim
33 words
The method of any one of Claims 1 to 3, wherein said make coat precursor includes a member selected from the group consisting of curing agent, initiator, and both curing agent and initiator.
Claim 9
Independent Claim
41 words
The method of any one of Claims 1 to 3, 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 10
Independent Claim
32 words
The method of any one of Claims 2 and 3, wherein said size coat precursor comprises a glutinous adhesive or a resinous adhesive or both a glutinous adhesive and a resinous adhesive.
Claim 11
Dependent Claim
15 words
The method of Claim 4, wherein said make coat precursor further comprises a thermosetting resin.
Claim 12
Dependent Claim
33 words
The method of Claim 11, 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 13
Independent Claim
25 words
The method of any one of Claims 1 to 3, wherein said make coat precursor comprises a free radically curable resin and a thermosetting resin.
Claim 14
Independent Claim
24 words
The method of any one of Claims 1 to 3, wherein said make coat precursor comprises a radiation curable resin and a thermosetting resin.
Claim 15
Independent Claim
36 words
The method of any one of Claims 1 to 3, 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 16
Dependent Claim
13 words
The method of Claim 8, wherein said initiator is in a liquid state.
References Cited (Backward Citations)
No citation records indexed.
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