US3887598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of metal complexes in a pure form
Assignee: Novartis Corp
•
Filing: 1973-11-08
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Granted: 1975-06-03
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Expires: 1993-11-08
Abstract
Abstract A new process for preparing metal complexes of unsubstituted or 3,5-substituted salicylic acid and of 3- or 4-valent metals comprising reacting a corresponding salicylic acid with a soluble metal salt and an alkali alcoholate.
Inventors
- 👤 Hans Eicke
- 👤 Vladimir Arnold
- 👤 Eplattenier Francois L
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:47
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/30; C10L1/301; C07; C07C; C07C51/00; C07C51/41; C07C51/418; C07F; C07F5/00; C07F5/06; C07F5/069; C08; C08K; C08K5/00; C08K5/0091; C10M; C10M2207/00; C10M2207/10; C10M2207/14; C10M2207/144; C10M2207/146; C10M2211/00; C10M2211/04; C10M2211/044; C10M2219/00; C10M2219/04; C10M2219/044; C10N; C10N2010/00; C10N2010/06; C10N2010/08; C10N2010/10; C10N2010/14; C10N2010/16
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
18 words
PROCESS FOR THE MANUFACTURE OF METAL COMPLEXES OF TRIVALENT OR TETRAVALENT METALS WITH ACIDS OF THE FORMULA I
Claim 2
Dependent Claim
18 words
PROCESS FOR THE MANUFACTURE OF METAL COMPLEXES OF TRIVALENT OR TETRAVALENT METALS WITH ACIDS OF THE FORMULA I
Claim 3
Dependent Claim
18 words
Process for the manufacture of metal complexes of trivalent or tetravalent metals with acids of the formula I
Claim 4
Dependent Claim
18 words
Process for the manufacture of metal complexes of trivalent or tetravalent metals with acids of the formula I
Claim 5
Dependent Claim
192 words
Process according to claim 1, characterised in that a successive reaction is carried out, in a lower alcohol, a lower ether, a lower ether-alcohol, a lower ketone or dimethylformamide, of a. an acid of the formula I with b. a salt of the formula II MpX(n p)m (II) in which M denotes the trivalent cation of Cr, Co, Fe, Al, Ga, In or Bi or of a lanthanide or the tetravalent cation of Zr, X denotes the anion Cl , Br , F , NO3 , SO4 or ClO4 and p denotes 1 or 2 and m corresponds to the valency of the anion X and n to the valency of the cation M and c. an alcoholate of the formula III M''OR (III) in which M'' denotes the cation of an alkali metal and R denotes lower alkyl, the methoxyethyl group or the ethoxyethyl group, a, b and c are employed in the molar ratio of (n-i):l/p:n and i denotes 1 or 0 and, if i is 1, the reaction mixture is reacted with water, the molar ratio of water to the acid of the formula I being at least 1:(n-1).
Claim 6
Dependent Claim
52 words
Process according to claim 1, characterised in that an acid of the formula I is used, in which R1 and R2 independently of one another denote hydrogen, alkyl with a total of 1 to 10 carbon atoms, cycloalkyl with 6 to 9 carbon atoms or aralkyl with 7 to 9 carbon atoms.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |