Patent US4650895A successfully refreshed from Google Patents.
US4650895A
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Process for producing high purity metallic compound
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1984-01-30
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Granted: 1987-03-17
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Expires: 2004-01-30
Abstract
Abstract High purity organometallic compounds can be obtained by the process which comprises subjecting an organometallic compound in a liquid state under stirring to preliminary oxidation or hydrolysis in a proportion of about 0.1 to 50% by weight of the organometallic compound to form solid reaction products, and separating by distillation the unreacted organometallic compound from the solid reaction products to recover the purified organometallic compound; and high purity metallic compounds such as a solid metallic hydroxide or oxide can be obtained by the process which comprises following the process as mentioned above, oxidizing or hydrolyzing completely the recovered purified organometallic compound.
Inventors
- 👤 Hidekimi Kadokura
- 👤 Hiroshi Umezaki
- 👤 Yoshihiro Higuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:39
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/06; C07F5/069; C01; C01F; C01F7/00; C01F7/02; C01F7/34; C01F7/36; C01G; C01G23/00; C01G23/04; C01G23/047; C01G23/053; C07F5/061; C07F5/062; C07F7/00; C07F7/003; C01P; C01P2006/00; C01P2006/80
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
94 words
A process for producing high purity organometallic compounds which comprises subjecting an organometallic compound selected from the group consisting of Al, Ga, In, Si, Ti, Zr, and Sn compounds having a C 1 -C 12 alkyl or a C 1 -C 8 alkoxy group, in a liquid state under stirring to hydrolysis with a reactant preliminarily in a proportion of 0.1 to 50% by weight of the organometallic compound to form solid reaction products and then separating by distillation the unreacted organometallic compound from the solid reaction products to recover the purified organometallic compound.
Claim 2
Dependent Claim
94 words
A process for producing high purity organometallic compounds which comprises subjecting an organometallic compound selected from the group consisting of Al, Ga, In, Si, Ti, Zr, and Sn compounds having a C 1 -C 12 alkyl or a C 1 -C 8 alkoxy group, in a liquid state under stirring to hydrolysis with a reactant preliminarily in a proportion of 0.1 to 50% by weight of the organometallic compound to form solid reaction products and then separating by distillation the unreacted organometallic compound from the solid reaction products to recover the purified organometallic compound.
Claim 3
Dependent Claim
24 words
A process according to claim 1, wherein the hydrolysis of the organometallic compound is conducted in a proportion of 1 to 20% by weight.
Claim 4
Dependent Claim
19 words
A process according to claim 1, wherein the hydrolysis is conducted at a temperature of 0° to 150° C.
Claim 5
Dependent Claim
14 words
A process according to claim 1, wherein the organometallic compound is an organoaluminum compound.
Claim 6
Dependent Claim
16 words
A process according to claim 1, wherein the reactant is water, water-vapor or acidic aqueous solution.
Claim 7
Dependent Claim
18 words
A process according to claim 1, wherein the hydrolysis is conducted in the presence of an organic solvent.
Claim 8
Dependent Claim
108 words
A process for producing high purity organometallic compounds which comprises subjecting an organometallic compound selected from the group consisting of Al, Ga, In, Si, Ti, Zr, and Sn compounds having a C 1 -C 12 alkyl or a C 1 -C 8 alkoxy group, in a liquid state under stirring to hydrolysis with a reactant preliminarily in a proportion of 0.1 to 50% by weight of the organometallic compound to form solid reaction products, separating by distillation the unreacted organometallic compound from the solid reaction products to recover the purified organometallic compound and then hydrolyzing completely the recovered organometallic compound to form a solid metal hydroxide or oxide.
Claim 9
Dependent Claim
108 words
A process for producing high purity organometallic compounds which comprises subjecting an organometallic compound selected from the group consisting of Al, Ga, In, Si, Ti, Zr, and Sn compounds having a C 1 -C 12 alkyl or a C 1 -C 8 alkoxy group, in a liquid state under stirring to hydrolysis with a reactant preliminarily in a proportion of 0.1 to 50% by weight of the organometallic compound to form solid reaction products, separating by distillation the unreacted organometallic compound from the solid reaction products to recover the purified organometallic compound and then hydrolyzing completely the recovered organometallic compound to form a solid metal hydroxide or oxide.
References Cited (Backward Citations)
US2727918A
Cited
US2768907A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-16 | 1990-09-15 | 1991-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-16 | 1994-09-15 | 1995-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-16 | 1998-09-15 | 1999-03-17 | $7700.00 | Window Closed / Lapsed |