Patent US4544377A successfully refreshed from Google Patents.
US4544377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding, lapping, and polishing compounds
Assignee: BASF SE
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Filing: 1984-03-30
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Granted: 1985-10-01
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Expires: 2004-03-30
Abstract
Abstract Grinding, lapping, and polishing compounds containing an abrasive material, a thickener, and a water-soluble alkylene oxide polymer. In addition to good applications-related characteristics, said compounds have the advantage of permitting the workpieces to be cleaned with water.
Inventors
- 👤 Roland Schwen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:00
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/14; C09K3/1454
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
84 words
A grinding, lapping, and polishing compound comprising (a) from about 10% by weight to about 70% by weight finely dispersed abrasive material, (b) from about 5% by weight to about 15% by weight thickening agent, and, (c) from about 15% by weight to about 85% by weight polymeric glycol of ethylene oxide, propylene oxide, and/or butylene oxide or its monoethers with a low-molecular-weight alcohol having a molecular weight of about 55 to 25,000 as the compound base, all percentages based on the compound weight.
Claim 2
Dependent Claim
84 words
A grinding, lapping, and polishing compound comprising (a) from about 10% by weight to about 70% by weight finely dispersed abrasive material, (b) from about 5% by weight to about 15% by weight thickening agent, and, (c) from about 15% by weight to about 85% by weight polymeric glycol of ethylene oxide, propylene oxide, and/or butylene oxide or its monoethers with a low-molecular-weight alcohol having a molecular weight of about 55 to 25,000 as the compound base, all percentages based on the compound weight.
Claim 3
Dependent Claim
36 words
The grinding, lapping and polishing compound of claim 1, wherein said abrasive material has a particle size of about 1 to 1200 μm and said thickener has a particle size of less than about 50 nm.
Claim 4
Dependent Claim
21 words
The grinding, lapping, and polishing compound of claim 1, wherein said compound contains finely dispersed silica as the thickening agent (b).
Claim 5
Dependent Claim
51 words
The grinding, lapping, and polishing compound of claim 3, wherein said abrasive material has a particle size of about 1 to 1200 μm, said thickener has a particle size of less than about 50 nm and said polymeric glycol has a viscosity of about 22 to 1500 mm/s at 40° C.
Claim 6
Dependent Claim
43 words
The grinding, lapping and polishing compound of claim 4, wherein said abrasives are selected from the group consisting of Vienna polishing chalk, iron oxide red, diatomaceous earth, pumice powder, quartz sand, chromium trioxide, corundum, silicon carbide, boron carbide, boron nitride, and diamond powder.
Claim 7
Dependent Claim
15 words
The grinding, lapping and polishing compound of claim 4, wherein said abrasive is silicon carbide.
Claim 8
Dependent Claim
15 words
The grinding, lapping and polishing compound of claim 4, wherein said abrasive is chromium oxide.
Claim 9
Dependent Claim
15 words
The grinding, lapping and polishing compounds of claim 4, wherein said abrasive is boron carbide.
Claim 10
Dependent Claim
15 words
The grinding, lapping and polishing compound of claim 4, wherein said abrasive is pumice powder.
Claim 11
Dependent Claim
24 words
The grinding, lapping, and polishing compound of claim 1, wherein said polymeric glycol (c) is a polyglycol monoalkylether of ethylene oxide and/or propylene oxide.
Claim 12
Dependent Claim
28 words
The grinding, lapping and polishing compound of claim 1, wherein said polymeric glycol (c) is the addition product of ethylene oxide and propylene oxide to a butanol base.
Claim 13
Dependent Claim
12 words
The grinding, lapping and polishing compound of claim 11, including conventional additives.
Claim 14
Dependent Claim
15 words
The grinding, lapping and polishing compound of claim 12, wherein said additives include coloring materials.
References Cited (Backward Citations)
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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) | 1988-09-30 | 1989-04-01 | 1989-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-30 | 1993-04-01 | 1993-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-30 | 1997-04-01 | 1997-10-01 | $7700.00 | Window Closed / Lapsed |