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US4252919A
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Stabilized azulmic acids, processes for their preparation and their use
Assignee: Bayer AG
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Filing: 1979-02-12
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Granted: 1981-02-24
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Expires: 1999-02-12
Abstract
Abstract Azulmic acids, stabilized by condensation with carbonyl compounds, said modified azulmic acids containing from 0.5 to 55 percent by weight of ionic groups of the formula ##STR1## in which R represents hydrogen, ammonium, one equivalent of a protonated or quaternized organic nitrogen base or of a sulphonium cation or one equivalent of a metal cation, and containing from 0.5 to 15 percent by weight of groups formed by decarboxylation reaction of the formula ##STR2## and acid addition salts and complex compounds of these stabilized azulmic acids, and also mixed products of these stabilized azulmic acids with additives can be used as agrochemicals. The products are particularly useful as fertilizers and as soil improving agents.
Inventors
- 👤 Kuno Wagner
- 👤 Kurt Findeisen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:28
CPC Classifications
C; C08; C08L; C08L79/00; C08G; C08G61/00; C08G61/02; C08G61/04; C08G73/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
88 words
Stabilized azulmic acids comprising products formed by the condensation of carbonyl compounds with modified azulmic acids, said modified azulmic acids containing from 0.5 to 55 percent by weight of ionic groups of the formula ##STR65## wherein R represents hydrogen, ammonium, one equivalent of a protonated or quaternized organic nitrogen base or of a sulphonium cation or one equivalent of a metal cation, and containing from 0.5 to 15 percent by weight of groups formed by decarboxylation reactions, said groups formed by decarboxylation reactions being of the formula ##STR66##
Claim 2
Dependent Claim
88 words
Stabilized azulmic acids comprising products formed by the condensation of carbonyl compounds with modified azulmic acids, said modified azulmic acids containing from 0.5 to 55 percent by weight of ionic groups of the formula ##STR65## wherein R represents hydrogen, ammonium, one equivalent of a protonated or quaternized organic nitrogen base or of a sulphonium cation or one equivalent of a metal cation, and containing from 0.5 to 15 percent by weight of groups formed by decarboxylation reactions, said groups formed by decarboxylation reactions being of the formula ##STR66##
Claim 3
Dependent Claim
117 words
An acid addition salt comprising a salt formed by the addition of a hydrogen ion from an inorganic or organic acid onto an amino group or other suitable group of a stabilized azulmic acid prepared by condensing a carbonyl compound with a modified azulmic acid, said modified azulmic acid containing from 0.5 to 55 percent by weight of ionic groups of the formula ##STR67## wherein R represents hydrogen, ammonium, one equivalent of a protonated or quaternized organic nitrogen base or of a sulphonium cation or one equivalent of a metal cation, and containing from 0.5 to 15 percent by weight of groups formed by decarboxylation reactions, said groups formed by decarboxylation reactions being of the formula ##STR68##
Claim 4
Dependent Claim
117 words
An acid addition salt comprising a salt formed by the addition of a hydrogen ion from an inorganic or organic acid onto an amino group or other suitable group of a stabilized azulmic acid prepared by condensing a carbonyl compound with a modified azulmic acid, said modified azulmic acid containing from 0.5 to 55 percent by weight of ionic groups of the formula ##STR67## wherein R represents hydrogen, ammonium, one equivalent of a protonated or quaternized organic nitrogen base or of a sulphonium cation or one equivalent of a metal cation, and containing from 0.5 to 15 percent by weight of groups formed by decarboxylation reactions, said groups formed by decarboxylation reactions being of the formula ##STR68##
Claim 5
Dependent Claim
108 words
An azulmic acid complex compound comprising a complex of a metal compound or an ammonium salt with a stabilized azulmic acid, said stabilized azulmic acid prepared by condensing a carbonyl compound with a modified azulmic acid, said modified azulmic acid containing from 0.5 to 55 percent by weight of ionic groups of the formula ##STR69## wherein R represents hydrogen, ammonium, one equivalent of a protonated or quaternized organic nitrogen base or of a sulphonium cation or one equivalent of a metal cation, and containing from 0.5 to 15 percent by weight of groups formed by decarboxylation reactions, said groups formed by decarboxylation reactions being of the formula ##STR70##
Claim 6
Dependent Claim
108 words
An azulmic acid complex compound comprising a complex of a metal compound or an ammonium salt with a stabilized azulmic acid, said stabilized azulmic acid prepared by condensing a carbonyl compound with a modified azulmic acid, said modified azulmic acid containing from 0.5 to 55 percent by weight of ionic groups of the formula ##STR69## wherein R represents hydrogen, ammonium, one equivalent of a protonated or quaternized organic nitrogen base or of a sulphonium cation or one equivalent of a metal cation, and containing from 0.5 to 15 percent by weight of groups formed by decarboxylation reactions, said groups formed by decarboxylation reactions being of the formula ##STR70##
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) | 1984-02-24 | 1984-08-25 | 1985-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-24 | 1988-08-25 | 1989-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-24 | 1992-08-25 | 1993-02-24 | $7700.00 | Window Closed / Lapsed |