US5518536A
Expired / Lapsed
US
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Alkaline earth metal-heptane dionate compounds
Assignee: Solvay Infra Bad Hoenningen GmbH
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Filing: 1995-06-15
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Granted: 1996-05-21
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Expires: 2015-06-15
Abstract
Abstract Alkaline earth metal heptane dionates which have uniform evaporation properties in a vacuum and are therefore highly suitable for use in CVD synthesis for depositing layers containing alkaline earth metal useful in fields such as the production of high temperature superconductors.
Inventors
- 👤 Guenther Doellein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:24
CPC Classifications
C; C07; C07C; C07C49/00; C07C49/92; C07C45/00; C07C45/77; C23; C23C; C23C16/00; C23C16/22; C23C16/30; C23C16/40; C23C16/404; C23C16/408; Y; Y10; Y10S; Y10S505/00; Y10S505/725; Y10S505/734
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
41 words
A vaporizable compound corresponding to the formula (I) M(R).sub.2 (I) wherein M represents calcium, strontium or barium, and R represents 2,6-dimethyl-3,5-heptane dionate, 2,2,6-trimethyl-3,5-heptane dionate, or 2,2,6,6-tetramethyl-3,5-heptane dionate; said compound exhibiting a 1 H-NMR spectrum free of a detectable water proton signal.
Claim 2
Dependent Claim
41 words
A vaporizable compound corresponding to the formula (I) M(R).sub.2 (I) wherein M represents calcium, strontium or barium, and R represents 2,6-dimethyl-3,5-heptane dionate, 2,2,6-trimethyl-3,5-heptane dionate, or 2,2,6,6-tetramethyl-3,5-heptane dionate; said compound exhibiting a 1 H-NMR spectrum free of a detectable water proton signal.
Claim 3
Dependent Claim
11 words
A compound according to claim 1, wherein R is 2,2,6,6-tetramethyl-3,5-heptane dionate.
Claim 4
Dependent Claim
10 words
A compound according to claim 1, wherein M is barium.
Claim 5
Dependent Claim
39 words
A composition of matter for use in a metal organic chemical vapor deposition process, said composition comprising in admixture at least one vaporizable compound corresponding to the formula (I) and at least one vaporizable organic compound of another metal.
Claim 6
Dependent Claim
39 words
A composition of matter for use in a metal organic chemical vapor deposition process, said composition comprising in admixture at least one vaporizable compound corresponding to the formula (I) and at least one vaporizable organic compound of another metal.
Claim 7
Dependent Claim
30 words
A composition of matter according to claim 4, comprising at least one vaporizable compound corresponding to the formula (I) and at least one vaporizable organic compound of yttrium and copper.
Claim 8
Dependent Claim
132 words
A process for preparing a compound corresponding to the formula (I): M(R).sub.2 (I) wherein M represents the metal calcium, strontium or barium, and R represents 2,6-dimethyl-3,5-heptane dionate, 2,2,6-trimethyl-3,5-heptane dionate or 2,2,6,6-tetramethyl-3,5-heptane dionate, said process comprising the steps of: mixing a solution or suspension of a compound of the metal M in water or in a water-containing water-miscible solvent with a diketone selected from the group consisting of 2,6-dimethyl-3,5-heptane dione, 2,2,6-trimethyl-3,5-heptane dione and 2,2,6,6-tetramethyl-3,5-heptane dione to react said compound of the metal M with said diketone; separating the resulting compound of Formula (I) from the mixture; and vacuum drying said separated compound of Formula (I) at a temperature of at most 60° C. until said compound of Formula (I) exhibits a 1 H-NMR spectrum in which a water proton signal cannot be detected.
Claim 9
Dependent Claim
132 words
A process for preparing a compound corresponding to the formula (I): M(R).sub.2 (I) wherein M represents the metal calcium, strontium or barium, and R represents 2,6-dimethyl-3,5-heptane dionate, 2,2,6-trimethyl-3,5-heptane dionate or 2,2,6,6-tetramethyl-3,5-heptane dionate, said process comprising the steps of: mixing a solution or suspension of a compound of the metal M in water or in a water-containing water-miscible solvent with a diketone selected from the group consisting of 2,6-dimethyl-3,5-heptane dione, 2,2,6-trimethyl-3,5-heptane dione and 2,2,6,6-tetramethyl-3,5-heptane dione to react said compound of the metal M with said diketone; separating the resulting compound of Formula (I) from the mixture; and vacuum drying said separated compound of Formula (I) at a temperature of at most 60° C. until said compound of Formula (I) exhibits a 1 H-NMR spectrum in which a water proton signal cannot be detected.
Claim 10
Dependent Claim
23 words
A process according to claim 6, wherein said compound of the metal M is a hydroxide or an oxide of said metal M.
Claim 11
Dependent Claim
26 words
A process according to claim 6, wherein said compound of the metal M and said diketone are used in a molar ratio of 1:2 to 1:2.05.
References Cited (Backward Citations)
DE297348C
Cited
US3098863A
Cited
US3946057A
Cited
US4127361A
Cited
US4251233A
Cited
EP0055459A1
Cited
US4915988A
Cited
US5140003A
Cited
US5139999A
Cited
US5028724A
Cited
US4970093A
Cited
US5225561A
Cited
US5280012A
Cited
US5453494A
Cited
DE4122449A1
Cited
DE4124686A1
Cited
US5346730A
Cited
US5451434A
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) | 1999-05-21 | 1999-11-20 | 2000-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-05-21 | 2003-11-20 | 2004-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-05-21 | 2007-11-20 | 2008-05-21 | $7700.00 | Window Closed / Lapsed |