Patent US5505991A successfully refreshed from Google Patents.
US5505991A
Expired / Lapsed
US
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Production of silicon oxide-coated solid particles
Assignee: BASF SE
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Filing: 1994-11-28
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Granted: 1996-04-09
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Expires: 2014-11-28
Abstract
Abstract Silicon oxide-coated solid particles are produced by decomposing silanes which contain at least one alkanoyloxy radical with water vapor and/or oxygen in the presence of the agitated solid particles.
Inventors
- 👤 Raimund Schmid
- 👤 Norbert Mronga
- 👤 Juan A. G. Gomez
- 👤 Reinhold Rieger
- 👤 Reinhold Schlegel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:07
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/62; C09C1/64; C09C1/644; C09C3/00; C09C3/12; C01; C01P; C01P2004/00; C01P2004/60; C01P2004/64; C01P2004/80; C01P2004/82; C01P2004/84
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
38 words
A process for producing silicon oxide-coated solid particles by decomposing volatile silicon compounds with water vapor and/or oxygen in the presence of agitated solid particles, which comprises using silicon compounds comprising silanes containing at least one alkanoyloxy radical.
Claim 2
Dependent Claim
38 words
A process for producing silicon oxide-coated solid particles by decomposing volatile silicon compounds with water vapor and/or oxygen in the presence of agitated solid particles, which comprises using silicon compounds comprising silanes containing at least one alkanoyloxy radical.
Claim 3
Dependent Claim
23 words
A process as claimed in claim 1, wherein the silanes used contain at least one alkanoyloxy radical and at least one alkoxy radical.
Claim 4
Dependent Claim
31 words
A process as claimed in claim 1, wherein the silanes used contain at least one C 2 -C 3 -alkanoyloxy radical and at least one C 1 -C 6 -alkoxy radical.
Claim 5
Dependent Claim
25 words
A process as claimed in claim 1, wherein the silanes used contain two identical or different alkanoyloxy radicals and two identical or different alkoxy radicals.
Claim 6
Dependent Claim
11 words
A process as claimed in claim 1, wherein di-tert-butoxydiacetoxysilane is used.
Claim 7
Dependent Claim
70 words
A process as claimed in claim 1, wherein the silanes used additionally contain one or two identical or different alkyl radicals which contain up to 10 carbon atoms and may be substituted by chlorine and whose carbon chain may be interrupted by one or more imino groups or oxygen atoms and which may be monounsaturated or polyunsaturated, or phenyl radicals which may be substituted by C 1 -C 2 -alkyl.
Claim 8
Dependent Claim
18 words
A process as claimed in claim 1 wherein the process is carried out in a fluidized bed reactor.
Claim 9
Dependent Claim
16 words
A process as claimed in claim 1 wherein the solid particles are inorganic and organic pigments.
Claim 10
Dependent Claim
37 words
A process as claimed in claim 1 wherein the solid particles are selected from the group consisting of one or more metal platelets, silicatic platelets and copper phthalocyanine platelets optionally coated with other metal oxides and/or metals.
Claim 11
Dependent Claim
24 words
A process as claimed in claim 1, further comprising, after the application of the silicon oxide layer, additionally coating the solid particles with metal.
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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) | 1999-04-09 | 1999-10-09 | 2000-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-04-09 | 2003-10-09 | 2004-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-04-09 | 2007-10-09 | 2008-04-09 | $7700.00 | Window Closed / Lapsed |