Patent US5148085A successfully refreshed from Google Patents.
Patent US4435383A successfully refreshed from Google Patents.
US4435383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slow release pesticide formulations
Assignee: EIDP Inc
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Filing: 1981-07-22
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Granted: 1984-03-06
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Expires: 2001-07-22
Abstract
Abstract This invention relates to a one-phase, solid controlled release pesticidal composition consisting essentially of a pesticide in homogeneous combination with a cross-linked copolymer prepared from hydrophobic monomers, selected from styrene and α-methyl styrene, and carboxylic acid-containing monomers.
Inventors
- 👤 Robert D. Wysong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:12
CPC Classifications
A; A01; A01N; A01N25/00; A01N25/08; A01N25/10; C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/62; C08G18/6204; C08G18/6216; C08G18/625
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
122 words
A solid one-phase pesticidal composition containing no solvent and consisting essentially of about 5 to 75 weight % pesticide in homogeneous combination with a cross-linked copolymer prepared from (a) about 40 to 80% by weight of a hydrophobic barrier monomer selected from styrene and α-methyl styrene, and (b) about 20 to 60% by weight of one or more unsaturated mono- or di-carboxylic acids in which all or part of the carboxyl groups may be in the anhydride form, where 5 to 95% of the available carboxyl groups in said copolymer are cross-linked with a cross-linking agent selected from (i) one or more aromatic polyfunctional amines, optionally in combination with one or more aromatic polyfunctional isocyanates, aliphatic polyfunctional amines, polyols or polyfunctional epoxides.
Claim 2
Dependent Claim
122 words
A solid one-phase pesticidal composition containing no solvent and consisting essentially of about 5 to 75 weight % pesticide in homogeneous combination with a cross-linked copolymer prepared from (a) about 40 to 80% by weight of a hydrophobic barrier monomer selected from styrene and α-methyl styrene, and (b) about 20 to 60% by weight of one or more unsaturated mono- or di-carboxylic acids in which all or part of the carboxyl groups may be in the anhydride form, where 5 to 95% of the available carboxyl groups in said copolymer are cross-linked with a cross-linking agent selected from (i) one or more aromatic polyfunctional amines, optionally in combination with one or more aromatic polyfunctional isocyanates, aliphatic polyfunctional amines, polyols or polyfunctional epoxides.
Claim 3
Dependent Claim
14 words
The composition of claim 1 which contains about 30 to 50 weight % pesticide.
Claim 4
Dependent Claim
13 words
The composition of claim 1 where the carboxylic acid is a di-carboxylic acid.
Claim 5
Dependent Claim
12 words
The composition of claim 3 where the di-carboxylic acid is maleic acid.
Claim 6
Dependent Claim
13 words
The composition of claim 3 where the carboxylic acid is in anhydride form.
Claim 7
Dependent Claim
15 words
The composition of claim 5 where the carboxylic acid in anhydride form is maleic anhydride.
Claim 8
Dependent Claim
11 words
The composition of claim 1 where the hydrophobic monomer is styrene.
Claim 9
Dependent Claim
14 words
The composition of claim 1 where the cross-linking agent is an aromatic polyfunctional amine.
Claim 10
Dependent Claim
11 words
The composition of claim 8 where the cross-linking agent is m-phenylenediamine.
Claim 11
Dependent Claim
16 words
The composition of claim 1 where 25 to 50% of the available carboxyl groups are cross-linked.
Claim 12
Dependent Claim
16 words
The composition of claim 8 where 25 to 50% of the available carboxyl groups are cross-linked.
Claim 13
Dependent Claim
16 words
The composition of claim 9 where 25 to 50% of the available carboxyl groups are cross-linked.
Claim 14
Dependent Claim
46 words
The composition of claim 1 consisting essentially of about 30 to 50 weight percent pesticide in homogeneous combination with a cross-linked polymer prepared from: (a) about 75% styrene; and (b) about 25% maleic anhydride; where about 50% of the available carboxyl groups are cross-linked with m-phenylenediamine.
Claim 15
Dependent Claim
10 words
The composition of claim 1 where the pesticide is methomyl.
Claim 16
Dependent Claim
14 words
The composition of claim 14 which contains about 30 to 50 weight % pesticide.
Claim 17
Dependent Claim
13 words
The composition of claim 14 where the carboxylic acid is a di-carboxylic acid.
Claim 18
Dependent Claim
12 words
The composition of claim 16 where the di-carboxylic acid is maleic acid.
Claim 19
Dependent Claim
13 words
The composition of claim 16 where the carboxylic acid is in anhydride form.
Claim 20
Dependent Claim
15 words
The composition of claim 18 where the carboxylic acid in anhydride form is maleic anhydride.
Claim 21
Dependent Claim
11 words
The composition of claim 14 where the hydrophobic monomer is styrene.
Claim 22
Dependent Claim
14 words
The composition of claim 14 where the cross-linking agent is an aromatic polyfunctional amine.
Claim 23
Dependent Claim
11 words
The composition of claim 21 where the cross-linking agent is m-phenylenediamine.
Claim 24
Dependent Claim
16 words
The composition of claim 14 where 25 to 50% of the available carboxyl groups are cross-linked.
Claim 25
Dependent Claim
16 words
The composition of claim 21 where 25 to 50% of the available carboxyl groups are cross-linked.
Claim 26
Dependent Claim
16 words
The composition of claim 22 where 25 to 50% of the available carboxyl groups are cross-linked.
Claim 27
Dependent Claim
44 words
A composition according to claim 1 consisting essentially of 30 to 50% methomyl in homogeneous combination with a cross-linked copolymer prepared from: (a) about 75% styrene and (b) about 25% maleic anhydride where approximately 50% of the available carboxyl groups are cross-linked with m-phenylenediamine.
Claim 28
Dependent Claim
86 words
A composition according to claim 1 consisting essentially of 5 to 60% weight percent methomyl in homogeneous combination with a copolymer prepared from: (a) about 50 to 75% by weight of a hydrophobic barrier monomer selected from styrene and α-methyl styrene, and (b) about 25 to 50% of one or more unsaturated mono- or di-carboxylic acids in which all or part of the carboxyl groups may be in anhydride form, where 5 to 95% of the available carboxyl groups in said copolymer are cross-linked with m-phenylenediamine.
Claim 29
Dependent Claim
21 words
A composition according to claim 12 in which the hydrophobic monomer is styrene, the unsaturated carboxylic acid-containing monomer is maleic anhydride.
Claim 30
Dependent Claim
26 words
A particulate composition of any of claims 1 to 28 in which at least 90% of the particles are under 40 microns in their largest dimension.
Claim 31
Dependent Claim
23 words
The composition of claim 29 in which at least 90% of the particles are between 1 to 10 microns in their largest dimension.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-06 | 1987-09-05 | 1988-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-06 | 1991-09-05 | 1992-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-06 | 1995-09-05 | 1996-03-06 | $7700.00 | Window Closed / Lapsed |