US4903440A
Expired / Lapsed
US
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Abrasive product having binder comprising an aminoplast resin
Assignee: 3M Co
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Filing: 1988-11-23
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Granted: 1990-02-27
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Expires: 2008-11-23
Abstract
Abstract An abrasive product comprising abrasive grains bonded together or bonded to at least one major surface of a backing sheet, by a binder formed from a precursor comprising an aminoplast resin having on average at least 1.1 pendant α,β-unsaturated carbonyl groups per molecule. The binder is formed by curing the precursor at the α,β-unsaturated site of the carbonyl group, by radiation energy or by heat, in the presence of an appropriate initiator system. The aminoplast resin can also contain pendant amino or hydroxy functional groups, which allow polymerization with condensation curable resins, such as phenolic, melamine, urea, urethane, and furfural resins. Polymerization at the unsaturated site of α,β-unsaturated carbonyl group can be effected either by radiation energy or by heat, and curing at the sites of the amino or hydroxy functional group can be subsequently effected by heat. The binder of this invention can be used to form the make coat, size coat, both coats, or as a backing treatment of a coated abrasive. The binder material can also be used in fibrous non-woven abrasive products. The binder can be used in embodiments where only a single binder coat is employed.
Inventors
- 👤 Alan R. Kirk
- 👤 Eric G. Larson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:21
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/14; C09K3/1409; C09K3/1427; B; B24; B24D; B24D11/00; B24D11/02
Claims Analysis
Total Claims: 42
Claim 1
Independent Claim
31 words
An abrasive article comprising abrasive grains, and at least one binder formed from a precursor comprising an aminoplast resin having on average at least 1.1 pendant α,β-unsaturated carbonyl groups per molecule.
Claim 2
Dependent Claim
31 words
An abrasive article comprising abrasive grains, and at least one binder formed from a precursor comprising an aminoplast resin having on average at least 1.1 pendant α,β-unsaturated carbonyl groups per molecule.
Claim 3
Dependent Claim
56 words
The abrasive article of claim 1 wherein said aminoplast resin further has at least one pendant --NHR or --OH functional group, where R represents a hydrogen atom or a substituted or unsubstituted hydrocarbon group, provided that if the hydrocarbon group is substituted, the substituent or substituents do not inhibit or prevent polymerization of said aminoplast resin.
Claim 4
Dependent Claim
15 words
The abrasive article of claim 2 wherein said precursor further comprises a condensation curable resin.
Claim 5
Dependent Claim
24 words
The abrasive article of claim 3 wherein said condensation curable resin is selected from the group consisting of phenolic, melamine, acrylate, and urea resins.
Claim 6
Dependent Claim
15 words
The abrasive article of claim 2 wherein said precursor further comprises an ethylenically unsaturated compound.
Claim 7
Dependent Claim
15 words
The abrasive article of claim 5 wherein said precursor further comprises a condensation curable resin.
Claim 8
Dependent Claim
15 words
The abrasive article of claim 1 wherein said precursor further comprises an ethylenically unsaturated compound.
Claim 9
Dependent Claim
46 words
The abrasive article of claim 7 wherein said ethylenically unsaturated compound is selected from the group consisting of ethylene glycol diacrylate, trimethylolpropane triacrylate, pentaerythritol triacrylate, diacrylate of bisphenol A, ethoxylated diacrylate of bisphenol A, N-vinyl-2-pyrrolidone, styrene, aliphatic urethane acrylate, divinyl benzene, and triacrylate of tris(hydroxyethyl) isocyanurate.
Claim 10
Dependent Claim
32 words
The abrasive article of claim 1 wherein said aminoplast resin is selected from the group consisting of urea aldehydes, melamine aldehydes, guanamine aldehydes, aniline aldehydes, toluenesufonamide aldehydes, ethyleneurea aldehydes, and mixtures thereof.
Claim 11
Dependent Claim
30 words
The abrasive article of claim 1 wherein said abrasive grains are selected from the group consisting of flint, garnet, aluminum oxide, alumina zirconia, ceramic aluminum oxide, diamond, and silicon carbide.
Claim 12
Dependent Claim
12 words
The abrasive article of claim 1 further comprising a thermal curing catalyst.
Claim 13
Dependent Claim
14 words
The abrasive article of claim 11 wherein said thermal curing catalyst is benzoyl peroxide.
Claim 14
Dependent Claim
32 words
The abrasive article of claim 11 wherein said binder further comprises a component selected from the group consisting of fillers, coupling agents, surfactants, wetting agents, plasticizers, fibers, dyes, pigments, and grinding aids.
Claim 15
Dependent Claim
25 words
The abrasive article of claim 13 wherein said filler is selected from the qroup consisting of calcium carbonate, silica, calcium metasilicate, alumina trihydrate, and feldspar.
Claim 16
Dependent Claim
15 words
The abrasive article of claim 1 wherein said precursor further comprises at least one photoinitiator.
Claim 17
Dependent Claim
23 words
The abrasive article of claim 15 wherein said photoinitiator is selected from the group consisting of aryliodonium salt, 2-methyl-4, 6-bis(trichloromethyl)-5-triazine, and 2,2-dimethoxy-1, 2-diphenyl-1-ethanone.
Claim 18
Dependent Claim
21 words
The abrasive article of claim 1 wherein the ratio of said precursor to said photoinitiator ranges from about 95:5 to 99.99:0.01.
Claim 19
Dependent Claim
13 words
The abrasive article of claim 1 wherein said article is a bonded abrasive.
Claim 20
Dependent Claim
29 words
The abrasive article of claim 1 wherein said abrasive article is a lofty, polymeric filamentous structure having abrasive grains distributed throughout said structure and secured therein by said binder.
Claim 21
Dependent Claim
76 words
A coated abrasive product comprising abrasive grains which are supported on and adherently bonded to at least one major surface of a backing sheet by a make coat of a first binder material and a size coat of a second binder material, at least one of said first binder material or said second binder material being formed from a precursor comprising an aminoplast resin having on average at least 1.1 pendant, α,β-unsaturated carbonyl groups per molecule.
Claim 22
Dependent Claim
76 words
A coated abrasive product comprising abrasive grains which are supported on and adherently bonded to at least one major surface of a backing sheet by a make coat of a first binder material and a size coat of a second binder material, at least one of said first binder material or said second binder material being formed from a precursor comprising an aminoplast resin having on average at least 1.1 pendant, α,β-unsaturated carbonyl groups per molecule.
Claim 23
Dependent Claim
56 words
The coated abrasive product of claim 20 wherein said aminoplast resin further has at least one pendant --NHR or --OH functional group, where R represents a hydrogen atom or a substituted or unsubstituted hydrocarbon group, provided that if the hydrocarbon group is substituted, the substituent or substituents do not inhibit or prevent polymerization of said aminoplast.
Claim 24
Dependent Claim
16 words
The coated abrasive product of claim 21 wherein said precursor further comprises a condensation curable resin.
Claim 25
Dependent Claim
25 words
The coated abrasive product article of claim 22 wherein said condensation curable resin is selected from the group consisting of phenolic, melamine, and urea resins.
Claim 26
Dependent Claim
16 words
The coated abrasive product of claim 21 wherein said precursor further comprises an ethylenically unsaturated compound.
Claim 27
Dependent Claim
16 words
The coated abrasive product of claim 24 wherein said precursor further comprises a condensation curable resin.
Claim 28
Dependent Claim
16 words
The coated abrasive product of claim 20 wherein said precursor further comprises an ethylenically unsaturated compound.
Claim 29
Dependent Claim
47 words
The coated abrasive article of claim 26 wherein said ethylenically unsaturated compound is selected from the group consisting of ethylene glycol diacrylate, trimethylolpropane triacrylate, pentaerythritol triacrylate, diacrylate of bisphenol A, ethoxylated diacrylate of bisphenol A, N-vinyl-2-pyrrolidone, styrene, aliphatic urethane acrylate, divinyl benzene, and triacrylate of tris(hydroxyethyl) isocyanurate.
Claim 30
Dependent Claim
33 words
The coated abrasive product of claim 20 wherein said aminoplast resin is selected from the group consisting of urea aldehydes, melamine aldehydes, guanamine aldehydes, aniline aldehydes, toluenesufonamide aldehydes, ethyleneurea aldehydes, and mixtures thereof.
Claim 31
Dependent Claim
31 words
The coated abrasive product of claim 20 wherein said abrasive grains are selected from the group consisting of flint, garnet, aluminum oxide, alumina zirconia, ceramic aluminum oxide, diamond, and silicon carbide.
Claim 32
Dependent Claim
13 words
The coated abrasive product of claim 20, further comprising a thermal curing catalyst.
Claim 33
Dependent Claim
15 words
The coated abrasive product of claim 30 wherein said thermal curing catalyst is benzoyl peroxide.
Claim 34
Dependent Claim
33 words
The coated abrasive product of claim 20 wherein said binder further comprises a component selected from the group consisting of fillers, coupling agents, surfactants, wetting agents, plasticizers, fibers, dyes, pigments, and grinding aids.
Claim 35
Dependent Claim
26 words
The coated abrasive product of claim 32 wherein said filler is selected from the group consisting of calcium carbonate, silica, calcium metasilicate, alumina trihydrate, and feldspar.
Claim 36
Dependent Claim
16 words
The coated abrasive product of claim 20 wherein said precursor further comprises at least one photoinitiator.
Claim 37
Dependent Claim
24 words
The coated abrasive product of claim 34 wherein said photoinitiator is selected from the group consisting of aryliodonium salt, 2-methyl-4, 6-bis(trichloromethyl)-5-triazine, and 2,2-dimethoxy-1, 2-diphenyl-1-ethanone.
Claim 38
Dependent Claim
22 words
The coated abrasive product of claim 34 wherein the ratio of said precursor to said photoinitiator ranges from about 95:5 to 99.99:001.
Claim 39
Dependent Claim
48 words
A coated abrasive product comprising abrasive grains which are supported on and adherently bonded to at least one major surface of a backing sheet by a binder material formed from a precursor comprising an aminoplast resin having on average at least 1.1 pendant, α,β-unsaturated carbonyl groups per molecule.
Claim 40
Dependent Claim
48 words
A coated abrasive product comprising abrasive grains which are supported on and adherently bonded to at least one major surface of a backing sheet by a binder material formed from a precursor comprising an aminoplast resin having on average at least 1.1 pendant, α,β-unsaturated carbonyl groups per molecule.
Claim 41
Dependent Claim
72 words
A coated abrasive product comprising a backing, a make coat, a layer of abrasive grains, and a size coat, wherein said backing has at least one of a saturant coat, a presize coat, or a backsize coat, wherein at least one of said saturant coat, said presize coat, or said backsize coat is formed from precursor comprising an aminoplast resin having on average at least 1.1 pendant α,β-unsaturated carbonyl groups per molecule.
Claim 42
Dependent Claim
72 words
A coated abrasive product comprising a backing, a make coat, a layer of abrasive grains, and a size coat, wherein said backing has at least one of a saturant coat, a presize coat, or a backsize coat, wherein at least one of said saturant coat, said presize coat, or said backsize coat is formed from precursor comprising an aminoplast resin having on average at least 1.1 pendant α,β-unsaturated carbonyl groups per molecule.
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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) | 1993-02-26 | 1993-08-28 | 1994-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-26 | 1997-08-28 | 1998-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-26 | 2001-08-28 | 2002-02-27 | $7700.00 | Window Closed / Lapsed |