US5039636A
Expired / Lapsed
US
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Preparation of aluminum titanate from an organometallic oligomer
Assignee: Clariant Finance BVI Ltd
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Filing: 1990-08-10
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Granted: 1991-08-13
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Expires: 2010-08-10
Abstract
Abstract An aluminum- and titanium-containing oligomer is prepared by a controlled hydrolysis reaction between a chelated aluminum compound and an organotitanium compound. The oligomer is heated to 800° C. in an oxygen-containing atmosphere to produce β-aluminum titanate.
Inventors
- 👤 Alexander Lukacs, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:39
CPC Classifications
C; C01; C01G; C01G23/00; C01G23/003; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/462; C04B35/478; C07; C07F; C07F17/00; C07F7/00; C07F7/003; C01P; C01P2006/00; C01P2006/32; C01P2006/33; C01P2006/34
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
100 words
An oligomer having the formula ##STR6## where R is a divalent organic radical, Z and Z 1 can be the same or different and are selected from --O--, --N═ and --S--; Y and Y' can be the same or different and are selected from substituted or unsubstituted 1-13 carbon monovalent hydrocarbon radicals and G is OY', R 1 , r 2 or ##STR7## where R 1 and R 2 can be the same or different and are selected from alkyl-substituted or unsubstituted cyclopentadienide ligands and R 3 is divalent organic radical that can be the same as R or different.
Claim 2
Dependent Claim
100 words
An oligomer having the formula ##STR6## where R is a divalent organic radical, Z and Z 1 can be the same or different and are selected from --O--, --N═ and --S--; Y and Y' can be the same or different and are selected from substituted or unsubstituted 1-13 carbon monovalent hydrocarbon radicals and G is OY', R 1 , r 2 or ##STR7## where R 1 and R 2 can be the same or different and are selected from alkyl-substituted or unsubstituted cyclopentadienide ligands and R 3 is divalent organic radical that can be the same as R or different.
Claim 3
Dependent Claim
24 words
The oligomer of claim 1 wherein Y and Y' are isopropyl, --Z--(R)--Z 1 -- is an ethylacetoacetato group and G is a pentanedionate group.
Claim 4
Dependent Claim
64 words
A process for preparing the oligomer of claim 1 by (1) reacting two equivalents of an aluminum compound having the formula ##STR8## with one equivalent of water to form a dimer, (2) reacting one equivalent of the dimer with one equivalent of a titanium compound having the formula ##STR9## in a hydrocarbon solvent, and on equivalent of water and (4) stripping off the solvent.
Claim 5
Dependent Claim
21 words
The process of claim 3 wherein the aluminum compound is (ethylacetoacetato) aluminum diisopropoxide and the titanium compound is titanium (diisopropoxide) bis(2,4-pentanedionate).
Claim 6
Dependent Claim
20 words
A process for preparing β-aluminum titanate by heating the oligomer of claim 1 to a temperature of about 800° C.
Claim 7
Dependent Claim
24 words
A process for preparing β-aluminum titanate by heating the oligomer of claim 2 to a temperature of about 800° C. in an oxygen-containing atmosphere.
References Cited (Backward Citations)
US3950460A
Cited
US3825653A
Cited
US4159209A
Cited
US4333881A
Cited
US4332844A
Cited
US4434103A
Cited
US4460654A
Cited
US4483944A
Cited
US4554186A
Cited
US4720562A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-08-12 | 1995-02-11 | 1995-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-12 | 1999-02-11 | 1999-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-12 | 2003-02-11 | 2003-08-13 | $7700.00 | Window Closed / Lapsed |