US5024991A
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US
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Composition using Schiff base copper complex for preparing compound metal oxides
Assignee: Mitsubishi Metal Corp
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Filing: 1988-08-01
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Granted: 1991-06-18
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Expires: 2008-08-01
Abstract
Abstract A composition for forming a compound metal oxide of a specific composition and a process for preparing said compound oxide are disclosed. The composition comprises an alkoxide of a rare earth metal, an alkoxide of an alkaline earth metal and an organic acid salt of an organic complex of copper. The process comprises refluxing said composition for reaction and thermally decomposing the reaction product. Also a film-forming composition for forming a thin layer of a compound metal oxide is disclosed. Said film-forming compound comprises the above-mentioned composition plus a film forming resin and an organic solvent.
Inventors
- 👤 Makoto Tsunashima
- 👤 Hiroto Uchida
- 👤 Kazuhiro Sakai
- 👤 Masato Miyauchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:08
CPC Classifications
H; H10; H10N; H10N60/00; H10N60/01; H10N60/0268; H10N60/0296; H10N60/0324; C; C04; C04B; C04B35/00; C04B35/01; C04B35/45; C04B35/4504; C04B35/622; C04B35/626; C04B35/63; C04B35/632; C04B35/636; C04B35/6365; Y; Y10; Y10S; Y10S505/00; Y10S505/725; Y10S505/734
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
96 words
A composition for preparing a compound oxide of a rare earth metal, an alkaline earth metal and copper in a specific content ratio which comprises: (1) an alkoxide of a rare earth metal, (2) an alkoxide of an alkaline earth metal, and (3) a Schiff base chelate complex of copper, in such content ratio that the amount of the rare earth metal in said alkoxide, the amount of the alkaline earth metal in said alkoxide and the amount of copper in said complex correspond to the amounts of these metals in the object compound metal oxide.
Claim 2
Dependent Claim
96 words
A composition for preparing a compound oxide of a rare earth metal, an alkaline earth metal and copper in a specific content ratio which comprises: (1) an alkoxide of a rare earth metal, (2) an alkoxide of an alkaline earth metal, and (3) a Schiff base chelate complex of copper, in such content ratio that the amount of the rare earth metal in said alkoxide, the amount of the alkaline earth metal in said alkoxide and the amount of copper in said complex correspond to the amounts of these metals in the object compound metal oxide.
Claim 3
Dependent Claim
78 words
A composition as recited in claim 1, wherein said Schiff base chelate complex of copper has the formula ##STR10## wherein R 1 and R 3 are --CH 3 , --C 2 H 5 , --C 6 H 5 or --CF 3 ; R 2 is --H, --CH 3 , --C 2 H 5 , --C 6 H 5 or --CF 3 ; and B is --(CH 2 ) n --, wherein n is 2, 3 or 4, ##STR11##
Claim 4
Dependent Claim
94 words
A film-forming composition for forming a thin film of the compound metal oxide comprising (1) an alkoxide of a rare earth metal, (2) an alkoxide of an alkaline earth metal, and (3) a Schiff base chelate complex of copper, in such content ratio that the amount of the rare earth metal in said alkoxide, the amount of the alkaline earth metal in said alkoxide and the amount of copper in said complex correspond to the amounts of these metals in the object compound metal oxide, (4) a film-forming resin, and (5) an organic solvent.
Claim 5
Dependent Claim
94 words
A film-forming composition for forming a thin film of the compound metal oxide comprising (1) an alkoxide of a rare earth metal, (2) an alkoxide of an alkaline earth metal, and (3) a Schiff base chelate complex of copper, in such content ratio that the amount of the rare earth metal in said alkoxide, the amount of the alkaline earth metal in said alkoxide and the amount of copper in said complex correspond to the amounts of these metals in the object compound metal oxide, (4) a film-forming resin, and (5) an organic solvent.
Claim 6
Dependent Claim
79 words
A film-forming composition as recited in claim 3, wherein said Schiff base chelate complex of copper has the formula ##STR12## wherein R 1 and R 3 are --CH 3 , --C 2 H 5 , --C 6 H 5 or --CF 3 ; R 2 is --H, --CH 3 , --C 2 H 5 , --C 6 H 5 or --CF 3 ; and B is --(CH 2 ) n --, wherein n is 2, 3 or 4, ##STR13##
References Cited (Backward Citations)
US4148940A
Cited
US4485094A
Cited
US4719127A
Cited
JPS60115841A
Cited
JPS6262507A
Cited
JPS62143826A
Cited
JPS62267476A
Cited
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| 3.5 Years (Year 4) | 1994-06-17 | 1994-12-17 | 1995-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-17 | 1998-12-17 | 1999-06-18 | $3760.00 | Window Closed / Lapsed |
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