EP0344567A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Process for preparing compound metal oxide
Assignee: Mitsubishi Materials Corp
•
Filing: 1989-05-22
•
Granted: —
•
Expires: 2009-05-22
Abstract
Abstract Compound oxides of bismuth, strontium, calcium and copper of a specific metal content ratio can be prepared by refluxing an organic solvent solution containing alkoxides of bismuth, strontium, calcium and an organic acid salt, an alkoxy-β-keto complex, β-diketo complex or β-ketoester complex in said specific metal content ratio, and thermally decomposing the refluxed reaction product.
Inventors
- 👤 Kazuhiro Sakai
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 02:07
CPC Classifications
C; C01; C01G; C01G29/00; C01G29/006; B; B82; B82Y; B82Y30/00; C04; C04B; C04B35/00; C04B35/01; C04B35/45; C04B35/4521; H; H10; H10N; H10N60/00; H10N60/01; H10N60/0268; H10N60/0772; C01P; C01P2004/00; C01P2004/60; C01P2004/64; C01P2006/00; C01P2006/32
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
91 words
A process for preparing a compound metal oxide of bismuth, strontium, calcium and copper comprising: dissolving (1) a C₁-C₆ alkoxide of bismuth, (2) a C₁-C₆ alkoxide of strontium, (3) a C₁-C₆ alkoxide of calcium, and (4) an organic acid salt, a C₁-C₆ alkoxy-β-diketo complex, β-diketo complex, or β-ketoester complex of copper in an organic solvent, in the same content ratio of the metals as that in the object compound metal oxide; allowing the mixture to react at the refluxing temperature; and thermally decomposing the resultant reaction mixture in the sprayed condition.
Claim 2
Dependent Claim
91 words
A process for preparing a compound metal oxide of bismuth, strontium, calcium and copper comprising: dissolving (1) a C₁-C₆ alkoxide of bismuth, (2) a C₁-C₆ alkoxide of strontium, (3) a C₁-C₆ alkoxide of calcium, and (4) an organic acid salt, a C₁-C₆ alkoxy-β-diketo complex, β-diketo complex, or β-ketoester complex of copper in an organic solvent, in the same content ratio of the metals as that in the object compound metal oxide; allowing the mixture to react at the refluxing temperature; and thermally decomposing the resultant reaction mixture in the sprayed condition.
Claim 3
Dependent Claim
29 words
A process for preparing a compound metal oxide of bismuth, strontium, calcium and copper as recited in Claim 1, wherein C₁-C₄ alkoxides of bismuth, strontium, and calcium are used.
Claim 4
Dependent Claim
32 words
A process for preparing a compound metal oxide of bismuth, strontium, calcium and copper as recited in Claim 1, wherein a solvent selected from alcohols and aliphatic and aromatic hydrocarbons is used.
Claim 5
Dependent Claim
40 words
A process for preparing a compound metal oxide of bismuth, strontium, calcium and copper as recited in Claim 1, wherein copper acetate, copper naphthenate, copper 2-ethyl hexanoate or higher fatty acid salt of copper is used as a copper source.
Claim 6
Dependent Claim
33 words
A process for preparing a compound metal oxide of bismuth, strontium, calcium and copper as recited in Claim 1, wherein a C₁-C₄ alkoxy-β-diketo complex, β-diketo complex or β-ketoester complex of copper is used.
Claim 7
Dependent Claim
36 words
A process for preparing a compound metal oxide of bismuth, strontium, calcium and copper as recited in Claim 1, wherein the thermal decomposition under the sprayed condition is conducted at a temperature of 500 to 1000°C.
References Cited (Backward Citations)
EP0199930A2
Cited
EP0301591A2
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.