US3856933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pyrotechnic disseminating system
Assignee: Dow Chemical Co
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Filing: 1970-09-08
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Granted: 1974-12-24
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Expires: 1990-09-08
Abstract
Abstract The present application discloses a pyrotechnic formulation for disseminating insecticides such as Dursban and Ronnel brand insecticides manufactured by The Dow Chemical Company. The formulation comprises an oxidizing agent, a non-halogenated polyepoxide resin as fuel and binder, an auxiliary fuel such as thiuram disulfide, a cooling additive, and an effective amount of the insecticide to be disseminated.
Inventors
- 👤 E Jankowiak
- 👤 E Niles
- 👤 G Lane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:36
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/30; C08G59/302; C06; C06B; C06B23/00; C06B23/04; C06B43/00; C06B45/00; C06B45/04; C06B45/06; C06B45/10; C06D; C06D3/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
239 words
A PYROTECHINIC DISSEMINATING FORMULATION COMPRISING ON A WEIGHT BASIS: A. FROM ABOUT 15 TO ABOUT 35 PER CENT OF AN OXIDIZING AGENT SELECTED FROM THE GROUP CONSISTING OF AN ALKALI METAL OR AMMONIUM NITRATE, CHLORATE, PERCHLORATE AND MIXTURES THEREOF, B. FROM ABOUT 12 TO ABOUT 25 PER CENT OF A NON-HALOGENATED POLYEPOXIDE RESIN HAVING A FUNCTIONALITY GREATER THAN 1 AND LESS THAN ABOUT 3, SAID POLYEPOXIDE RESIN BEING SELECTED FROM THE GROUP OF THE GLYCIDYL ETHER OF BISPHENOL A, BIS(P-(2,3-EPOXYPROPOXY)-PHENYL DISULFIDE),GLYCERINE GLYCIDYL ETHER, 1,2,4-TRIS (2-(2,3-EPOXYPROPYLTHIO)ETHYL) CYCLOHEXANE AND 3,3''-(ETHYLENEBIS(THIOETHYLENE)BIS(7OXABICYCLO)4.1.0)CYCLOHEPTANE; C. FROM ABOUT 0.1 TO ABOUT 10 PER CENT OF AN AMINE OR A DICARBOXYLIC ACID OR DICARBOXYLIC ACID ANHYDRIDE AS CURING AGENT, SAID CURING AGENT BEING SELECTED FROM THE GROUP OF ETHYLENE DIAMINE, ETHYLAMINE, ISOPROPYLAMINE, NBUTYLAMINE, ISOBUTYLAMINE, 2-ETHYLHEXYLAMINE, CYCLOHEXYLAMINE, OXALIC ACID, MALONIC ACID, SUCCINIC ACID, MALEIC ACID, ITACONIC ACID, SUCCINIC ANHYDRIDE, MALEIC ANHYDRIDE, ITACONIC ANHYDRIDE AND PHTHALIC ANHYDRIDE; D. FROM ABOUT 5 TO ABOUT 20 PER CENT OF A GAS GENERATING COOLING AGENT SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL ACID CARBONATES, AMMONIUM ACID CARBONATES, GUANIDINE CARBONATE, OXAMIDE, OXALIC DIHYDRAZINE AND UREA OXALATE; E. FROM ABOUT 5 TO ABOUT 20 PER CENT OF AUXILIARY FUEL, SELECTED FROM THE GROUP CONSISTING OF THIOUREA, TETRAMETHYLTHIURAM DISULFIDE, TETRAETHYLTHIURAM DISULFIDE, MONOAMINOGUANIDINIUM NITRATE, DIAMINOGUANIDINIUM NITRATE, TRIAMINOGUANIDNIUM, ETHYLENEBIS(AMINOMONOGUANIDINIUM)DINITRATE, 1-AMINO2,5HYDRAZINE-TRIAZOL NITRATE, 1-AMINO-2,5HYDRAZINE-TRIAZOL DINITRATE, THIOSEMICARBAZIDE, ETHYLENEBIS(THIOSEMICARBAZIDE), THIOCARBOXYHYDRAZIDE, AMINONITROQUANIDINE AND DITHIOBIUREA, AND F. THE BALANCE OF AN INSECTICIDE SELECTED FROM THE GROUP OF 0,0-DIETHYL-0,3,5,6-TRICHLORO-2-PYRIDYL PHOSPHOROTHIOATE AND 0,0-DIMETHYL-0(2,4,5-TRICHLOROPHENYL) PHOSPHOROTHIOATE.
Claim 2
Dependent Claim
239 words
A PYROTECHINIC DISSEMINATING FORMULATION COMPRISING ON A WEIGHT BASIS: A. FROM ABOUT 15 TO ABOUT 35 PER CENT OF AN OXIDIZING AGENT SELECTED FROM THE GROUP CONSISTING OF AN ALKALI METAL OR AMMONIUM NITRATE, CHLORATE, PERCHLORATE AND MIXTURES THEREOF, B. FROM ABOUT 12 TO ABOUT 25 PER CENT OF A NON-HALOGENATED POLYEPOXIDE RESIN HAVING A FUNCTIONALITY GREATER THAN 1 AND LESS THAN ABOUT 3, SAID POLYEPOXIDE RESIN BEING SELECTED FROM THE GROUP OF THE GLYCIDYL ETHER OF BISPHENOL A, BIS(P-(2,3-EPOXYPROPOXY)-PHENYL DISULFIDE),GLYCERINE GLYCIDYL ETHER, 1,2,4-TRIS (2-(2,3-EPOXYPROPYLTHIO)ETHYL) CYCLOHEXANE AND 3,3''-(ETHYLENEBIS(THIOETHYLENE)BIS(7OXABICYCLO)4.1.0)CYCLOHEPTANE; C. FROM ABOUT 0.1 TO ABOUT 10 PER CENT OF AN AMINE OR A DICARBOXYLIC ACID OR DICARBOXYLIC ACID ANHYDRIDE AS CURING AGENT, SAID CURING AGENT BEING SELECTED FROM THE GROUP OF ETHYLENE DIAMINE, ETHYLAMINE, ISOPROPYLAMINE, NBUTYLAMINE, ISOBUTYLAMINE, 2-ETHYLHEXYLAMINE, CYCLOHEXYLAMINE, OXALIC ACID, MALONIC ACID, SUCCINIC ACID, MALEIC ACID, ITACONIC ACID, SUCCINIC ANHYDRIDE, MALEIC ANHYDRIDE, ITACONIC ANHYDRIDE AND PHTHALIC ANHYDRIDE; D. FROM ABOUT 5 TO ABOUT 20 PER CENT OF A GAS GENERATING COOLING AGENT SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL ACID CARBONATES, AMMONIUM ACID CARBONATES, GUANIDINE CARBONATE, OXAMIDE, OXALIC DIHYDRAZINE AND UREA OXALATE; E. FROM ABOUT 5 TO ABOUT 20 PER CENT OF AUXILIARY FUEL, SELECTED FROM THE GROUP CONSISTING OF THIOUREA, TETRAMETHYLTHIURAM DISULFIDE, TETRAETHYLTHIURAM DISULFIDE, MONOAMINOGUANIDINIUM NITRATE, DIAMINOGUANIDINIUM NITRATE, TRIAMINOGUANIDNIUM, ETHYLENEBIS(AMINOMONOGUANIDINIUM)DINITRATE, 1-AMINO2,5HYDRAZINE-TRIAZOL NITRATE, 1-AMINO-2,5HYDRAZINE-TRIAZOL DINITRATE, THIOSEMICARBAZIDE, ETHYLENEBIS(THIOSEMICARBAZIDE), THIOCARBOXYHYDRAZIDE, AMINONITROQUANIDINE AND DITHIOBIUREA, AND F. THE BALANCE OF AN INSECTICIDE SELECTED FROM THE GROUP OF 0,0-DIETHYL-0,3,5,6-TRICHLORO-2-PYRIDYL PHOSPHOROTHIOATE AND 0,0-DIMETHYL-0(2,4,5-TRICHLOROPHENYL) PHOSPHOROTHIOATE.
Claim 3
Dependent Claim
72 words
The composition of claim 1 wherein on a weight basis from about 18 to about 28 per cent is oxidizer, from about 13 to about 20 per cent is a non-halogenated, sulfide-containing polyepoxide resin as binder-fuel, from about 1 to about 10 per cent is curing agent, from about 10 to about 20 per cent is an auxiliary fuel, and from about 10 to about 20 per cent is a cooling additive.
Claim 4
Dependent Claim
65 words
The composition of claim 1 having: from about 15 to about 35 per cent of potassium chlorate as oxidizing agent; from about 1 to about 10 per cent of maleic anhydride as curing agent for the binder-fuel; from about 10 to about 19 per cent sodium acid carbonate as cooling agent; and from about 10 to about 20 per cent of tetramethylthiuramdisulfide as auxiliary fuel.
Claim 5
Dependent Claim
42 words
The composition of claim 1 wherein the polyepoxide is copolymerized with a low molecular weight polysulfide resin of the formula H(SCH2CH2OCH2OCH2CH2S)x, wherein x is an integer sufficient to provide a resin having a molecular weight of from about 500 TO about 4,000.
Claim 6
Dependent Claim
35 words
The composition of claim 4 wherein the molecular weight of the polysulfide is within the range of from about 500 to about 4, 000 and the viscosity at 160*F. is less than about 60 poise.
Claim 7
Dependent Claim
22 words
The composition of claim 4 wherein the polysulfide resin comprises a maximum of about 50 weight per cent of the binder fuel.
Claim 8
Dependent Claim
37 words
The composition of claim 6 wherein the polysulfide resin comprises up to about 28 per cent of the binder fuel and corresponds to a maximum of about 10 per cent of the total weight of the composition.
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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) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |