Patent US4320129A successfully refreshed from Google Patents.
US4320129A
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Pyromellitic diimide complexes
Assignee: Merck and Co Inc
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Filing: 1979-02-05
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Granted: 1982-03-16
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Expires: 1999-02-05
Abstract
Abstract Complexes of pyromellitic diimide compounds which are ruminant feed additives and which improve feed efficiency are disclosed. The pyromellitic diimide compounds may be unsubstituted pyromellitic diimide itself, or one of the nitrogen atoms may be substituted with an alkyl or substituted alkyl group. The pyromellitic diimide nucleus may also be substituted. The pyromellitic diimide compound is complexed with a compound containing an amide, amidine or thioamide linkage. The complexing agent may be either cyclic or open chain. Compositions using the complexes as ruminant feed additives are also disclosed.
Inventors
- 👤 Michael H. Fisher
- 👤 Bruce O. Linn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:55
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/44; C07D209/48; A; A23; A23K; A23K20/00; A23K20/10; A23K20/116; A23K20/137; C07D307/00; C07D307/77; C07D307/87; C07D307/89; C07D487/00; C07D487/02; C07D487/04; C07D491/00; C07D491/02; C07D491/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
86 words
A complex having the formula: ##STR4## wherein m and n are independently 1 or 2 such that m and n are not both 2; R 1 is hydrogen, loweralkyl, or hydroxy substituted loweralkyl; Y and Z are independently hydrogen, halogen or loweralkyl; X is oxygen, sulfur or imino; R 2 and R 3 are independently hydrogen, loweralkyl, amino, aminoloweralkyl or loweralkylamino; and R 2 and R 3 may be connected to form a pyridyl or pyrimidinyl ring which may be optionally substituted with loweralkyl or hydroxy.
Claim 2
Dependent Claim
86 words
A complex having the formula: ##STR4## wherein m and n are independently 1 or 2 such that m and n are not both 2; R 1 is hydrogen, loweralkyl, or hydroxy substituted loweralkyl; Y and Z are independently hydrogen, halogen or loweralkyl; X is oxygen, sulfur or imino; R 2 and R 3 are independently hydrogen, loweralkyl, amino, aminoloweralkyl or loweralkylamino; and R 2 and R 3 may be connected to form a pyridyl or pyrimidinyl ring which may be optionally substituted with loweralkyl or hydroxy.
Claim 3
Dependent Claim
20 words
The complex of claim 1 wherein Y and Z are hydrogen and R 1 is hydrogen, methyl, ethyl or hydroxyethyl.
Claim 4
Dependent Claim
19 words
The complex of claim 2 wherein Y and Z are hydrogen and R 1 is hydrogen, methyl or hydroxyethyl.
Claim 5
Dependent Claim
23 words
The complex of claim 1 wherein R 2 is hydrogen or loweralkyl; R 3 is hydrogen, amino, or lower-alkyl; and X is oxygen.
Claim 6
Dependent Claim
33 words
The complex of claim 1 wherein the complexing agent is urea, formamide, acetamide; 2-pyridone or 2- or 4-pyrimidone optionally substituted with methyl, and 2- or 4-hydroxy pyrimidine or amino; optionally substituted with methyl.
Claim 7
Dependent Claim
22 words
The complex of claim 5 wherein the complexing agent is selected from urea, formamide, acetamide, 4,6-dimethyl-2-pyrimidone; 2,4-dimethyl-6-pyrimidone; 2-pyridone; 3-hydroxy-2-pyridone and 2-amino-4,6-dimethyl pyrimidine.
Claim 8
Dependent Claim
9 words
The complex of claim 6 which is pyromellitic diimide.urea.
Claim 9
Dependent Claim
9 words
The complex of claim 6 which is pyromellitic diimide.formamide.
Claim 10
Dependent Claim
9 words
The complex of claim 6 which is pyromellitic diimide.acetamide.
Claim 11
Dependent Claim
9 words
The complex of claim 6 which is pyromellitic diimide.4,6-dimethyl-2-pyrimidone.
Claim 12
Dependent Claim
30 words
A method for increasing the feed efficiency of a ruminant animal which comprises administering to said ruminant in the feed thereof, an effective amount of a compound of claim 1.
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) | 1985-03-15 | 1985-09-14 | 1986-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-15 | 1989-09-14 | 1990-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-15 | 1993-09-14 | 1994-03-16 | $7700.00 | Window Closed / Lapsed |