US5264634A
Expired / Lapsed
US
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Volatile alkaline earth metal complex and its use
Assignee: Hoechst AG
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Filing: 1992-04-07
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Granted: 1993-11-23
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Expires: 2012-04-07
Abstract
Abstract An alkaline earth metal chelate complex of 2,2,6,6-tetramethylheptanedione of the formula (I) M.sup.2+ (C.sub.11 H.sub.19 O.sub.2).sup.-.sub.2.L.sub.k (I) is described, in which M is calcium, strontium or barium, L is a ligand and k is a number from 1 to 3, the complex being free of water of hydration and the ligand L being an aliphatic ether having at least two oxygen atoms in the molecule. A process for the preparation of the chelate complex and its use for the production of coated substrates are also described.
Inventors
- 👤 Winfried Becker
- 👤 Stephan Weidlich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:21
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C01; C01F; C01F11/00; C04B41/45; C04B41/4505; C04B41/455; C04B41/4554; C04B41/80; C04B41/81; C07; C07C; C07C49/00; C07C49/92; C23; C23C; C23C16/00; C23C16/22; C23C16/30; C23C16/40; C23C16/408; H; H10; H10N; H10N60/00; H10N60/01; H10N60/0268; H10N60/0772
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
63 words
An alkaline earth metal chelate complex of 2,2,6,6-tetramethylheptanedione of the formula (I) M.sup.2+ (C.sub.11 H.sub.19 O.sub.2).sup.-.sub.2.L.sub.k (I) in which M is calcium, strontium or barium, L is a ligand and k is a number from 1 to 3, the complex being free of water of hydration and the ligand L being an aliphatic ether having at least two oxygen atoms in the molecule.
Claim 2
Dependent Claim
63 words
An alkaline earth metal chelate complex of 2,2,6,6-tetramethylheptanedione of the formula (I) M.sup.2+ (C.sub.11 H.sub.19 O.sub.2).sup.-.sub.2.L.sub.k (I) in which M is calcium, strontium or barium, L is a ligand and k is a number from 1 to 3, the complex being free of water of hydration and the ligand L being an aliphatic ether having at least two oxygen atoms in the molecule.
Claim 3
Dependent Claim
20 words
A chelate complex as claimed in claim 1, wherein the aliphatic ether is a bis(methyl) ether or a bis(ethyl) ether.
Claim 4
Dependent Claim
22 words
A chelate complex as claimed in claim 2, wherein the aliphatic ether is a bis ether or ethylene glycol or diethylene glycol.
Claim 5
Dependent Claim
45 words
A process for the preparation of an alkaline earth metal chelate complex as claimed in claim 1, which comprises recrystallizing an alkaline earth metal chelate complex of 2,2,6,6-tetramethylheptanedione containing water of hydration from an aliphatic ether having at least two oxygen atoms in the molecule.
References Cited (Backward Citations)
US4558144A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1996-11-22 | 1997-05-24 | 1997-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-22 | 2001-05-24 | 2001-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-22 | 2005-05-24 | 2005-11-23 | $7700.00 | Window Closed / Lapsed |