Patent US5221296A successfully refreshed from Google Patents.
US5221296A
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Abrasives
Assignee: BASF SE
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Filing: 1992-10-07
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Granted: 1993-06-22
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Expires: 2012-10-07
Abstract
Abstract Abrasives based on finely divided abrasive particles bonded to one another and/or to a support by means of a binder, where the binder is the solid component of an aqueous polymer dispersion which is obtainable by polymerizing unsaturated monomers which can be polymerized by means of free radicals, in the aqueous phase in the presence of a monosaccharide, oligosaccharide, polysaccharide, oxidatively, hydrolytically and/or enzymatically degraded polysaccharide, chemically modified monosaccharide, oligosaccharide or polysaccharide, or a mixture of the said compounds, by the process of free-radical aqueous emulsion polymerization.
Inventors
- 👤 Thomas Schwerzel
- 👤 Kurt Wendel
- 👤 Hermann Rockstroh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:09
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/02; B24D3/20
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
88 words
An abrasive based on finely divided abrasive particles bonded to one another and/or to a support by means of a binder, where the binder is the solid component of an aqueous polymer dispersion which is obtainable by polymerizing unsaturated monomers which can be polymerized by means of free radicals, in the aqueous phase in the presence of a monosaccharide, oligosaccharide, polysaccharide, oxidatively, hydrolytically and/or enzymatically degraded polysaccharide, chemically modified monosaccharide, oligosaccharide or polysaccharide, or a mixture of the said compounds, by the process of free-radical aqueous emulsion polymerization.
Claim 2
Dependent Claim
88 words
An abrasive based on finely divided abrasive particles bonded to one another and/or to a support by means of a binder, where the binder is the solid component of an aqueous polymer dispersion which is obtainable by polymerizing unsaturated monomers which can be polymerized by means of free radicals, in the aqueous phase in the presence of a monosaccharide, oligosaccharide, polysaccharide, oxidatively, hydrolytically and/or enzymatically degraded polysaccharide, chemically modified monosaccharide, oligosaccharide or polysaccharide, or a mixture of the said compounds, by the process of free-radical aqueous emulsion polymerization.
Claim 3
Dependent Claim
103 words
An abrasive as claimed in claim 1, whose binder is obtainable by free-radical polymerization of monomer mixtures comprising the following monomer composition: from 39 to 69% by weight of at least one ester of α,β-monoethylenically unsaturated mono- and dicarboxylic acids having 3 to 6 carbon atoms with alkanols having 1 to 6 carbon atoms, from 30 to 60% by weight of styrene, from 1 to 10% by weight of at least one monomer from the group consisting of α,β-monoethylenically unsaturated carboxylic acids having 3 to 6 carbon atoms, and amides and nitriles thereof, and from 0 to 10% by weight of crosslinking monomers.
References Cited (Backward Citations)
US4690692A
Cited
US4350498A
Cited
US4652274A
Cited
US4773920A
Cited
US4773920B1
Cited
EP0261098A2
Cited
US5055113A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-06-21 | 1996-12-21 | 1997-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-21 | 2000-12-21 | 2001-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-21 | 2004-12-21 | 2005-06-22 | $7700.00 | Window Closed / Lapsed |