US5236472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive product having a binder comprising an aminoplast binder
Assignee: 3M Co
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Filing: 1991-02-22
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Granted: 1993-08-17
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Expires: 2011-02-22
Abstract
Abstract Abrasive products comprising abrasive grains bonded together or bonded to a backing by means of a binder compressing an oligomeric aminoplast resin having on average at least one pendant α,β-unsaturated carbonyl group per oligomeric unit. The oligomeric aminoplast resins polymerize via free radical polymerization at the site of the α,β-unsaturation. Polymerization is initiated by a source of free radicals. The source of free radicals can be generated by electron beam radiation or by an appropriate curing agent or initiator upon exposure to heat or radiation energy. The coated abrasive of this invention demonstrates improved grinding performance under severe conditions as compared with coated abrasives comprising radiation curable resins heretofore known.
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; B; B24; B24D; B24D3/00; B24D3/02; B24D3/20; B24D3/28; B24D11/00; B24D11/02; B24D3/34; B24D3/342
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
33 words
An abrasive article comprising abrasive grains, and at least one binder formed from a precursor comprising an oligomeric aminoplast resin having on average at least one pendant α,β-unsaturated carbonyl group per oligomeric unit.
Claim 2
Dependent Claim
33 words
An abrasive article comprising abrasive grains, and at least one binder formed from a precursor comprising an oligomeric aminoplast resin having on average at least one pendant α,β-unsaturated carbonyl group per oligomeric unit.
Claim 3
Dependent Claim
57 words
The abrasive article of claim 1, wherein said oligomeric 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
17 words
The abrasive article of claim 2, wherein said precursor further comprises at least one condensation curable resin.
Claim 5
Dependent Claim
23 words
The abrasive article of claim 3, wherein said condensation curable resin is selected from the group consisting of phenolic, melamine, and urea resins.
Claim 6
Dependent Claim
17 words
The abrasive article of claim 2, wherein said precursor further comprises at least one ethylenically unsaturated compound.
Claim 7
Dependent Claim
17 words
The abrasive article of claim 5, wherein said precursor further comprises at least one condensation curable resin.
Claim 8
Dependent Claim
17 words
The abrasive article of claim 1, wherein said precursor further comprises at least one 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
17 words
The abrasive article of claim 1, wherein said precursor further comprises at least one condensation curable resin.
Claim 11
Dependent Claim
33 words
The abrasive article of claim 1, wherein said oligomeric aminoplast resin is selected from the group consisting of urea aldehydes, melamine aldehydes, guanamine aldehydes, aniline aldehyde, toluenesulfonamide aldehydes, ethyleneurea aldehydes, and mixtures thereof.
Claim 12
Dependent Claim
12 words
The abrasive article of claim 1, further comprising a thermal curing catalyst.
Claim 13
Dependent Claim
32 words
The abrasive article of claim 1, 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 14
Dependent Claim
15 words
The abrasive article of claim 1, wherein said precursor further comprises at least one photoinitiator.
Claim 15
Dependent Claim
13 words
The abrasive article of claim 1, wherein said article is a bonded abrasive.
Claim 16
Dependent Claim
29 words
The abrasive article of claim 1, wherein said abrasive article is a lofty, polymeric filmanetous structure having abrasive grains distributed throughout said structure and secured therein by said binder.
Claim 17
Dependent Claim
77 words
An abrasive article 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 oligomeric aminoplast resin having on average at least one pendant α,β-unsaturated carbonyl group per oligomeric unit.
Claim 18
Dependent Claim
77 words
An abrasive article 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 oligomeric aminoplast resin having on average at least one pendant α,β-unsaturated carbonyl group per oligomeric unit.
Claim 19
Dependent Claim
58 words
The coated abrasive article of claim 16, wherein said oligomeric 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 20
Dependent Claim
18 words
The coated abrasive article of claim 17, wherein said precursor further comprises at least one condensation curable resin.
Claim 21
Dependent Claim
24 words
The coated abrasive article of claim 18, wherein said condensation curable resin is selected from the group consisting of phenolic, melamine, and urea resins.
Claim 22
Dependent Claim
18 words
The coated abrasive article of claim 17, wherein said precursor further comprises at least one ethylenically unsaturated compound.
Claim 23
Dependent Claim
18 words
The coated abrasive article of claim 20, wherein said precursor further comprises at least one condensation curable resin.
Claim 24
Dependent Claim
18 words
The coated abrasive article of claim 16, wherein said precursor further comprises at least one ethylenically unsaturated compound.
Claim 25
Dependent Claim
47 words
The coated abrasive article of claim 22, wherein said ethylenically unsaturated compound is selected from the group consisting of ethylene glycol diacrylate, trimethylolpropane triacrylate, pentaerythritol triacrylate diacrylate of bispenol A, ethoxylated diacrylate of bisphenol A, N-vinyl-2-pyrrolidone, styrene, aliphatic urethane acrylate, divinyl benzene, and triacrylate of tris(hydroxyethyl) isocyanurate.
Claim 26
Dependent Claim
33 words
The coated abrasive article of claim 16, wherein said aminoplast resin is selected from the group consisting of urea aldehydes, melamine aldehydes, guanamine aldehydes, aniline aldehyde, toluenesulfonamide aldehydes, ethyleneurea aldehydes, and mixtures thereof.
Claim 27
Dependent Claim
27 words
The abrasive article of claim 16, wherein said abrasive grains are selected from the group consisting of flint, garnet, aluminum oxide, alumina zirconia, diamond, and silicon carbide.
Claim 28
Dependent Claim
13 words
The coated abrasive article of claim 16, further comprising a thermal curing catalyst.
Claim 29
Dependent Claim
33 words
The coated abrasive article of claim 16, 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 30
Dependent Claim
16 words
The coated abrasive article of claim 16, wherein said precursor further comprises at least one photoinitiator.
Claim 31
Dependent Claim
50 words
A coated abrasive article 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 oligomeric aminoplast resin having on average at least one pendant α,β-unsaturated carbonyl group per oligomeric unit.
Claim 32
Dependent Claim
50 words
A coated abrasive article 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 oligomeric aminoplast resin having on average at least one pendant α,β-unsaturated carbonyl group per oligomeric unit.
Claim 33
Dependent Claim
75 words
A coated abrasive article 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 on said saturant coat, said presize coat, or said backsize coat is formed from a precursor comprising an oligomeric aminoplast resin having on average at least one pendant α,β-unsaturated carbonyl group per oligomeric unit.
Claim 34
Dependent Claim
75 words
A coated abrasive article 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 on said saturant coat, said presize coat, or said backsize coat is formed from a precursor comprising an oligomeric aminoplast resin having on average at least one pendant α,β-unsaturated carbonyl group per oligomeric unit.
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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) | 1996-08-16 | 1997-02-15 | 1997-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-16 | 2001-02-15 | 2001-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-16 | 2005-02-15 | 2005-08-17 | $7700.00 | Window Closed / Lapsed |