US3287189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated explosive comprising ammonium nitrate
Assignee: Dow Chemical Co
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Filing: 1964-03-02
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Granted: 1966-11-22
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Expires: 1984-03-02
Abstract
No abstract record available.
Inventors
- 👤 John S Wilson
- 👤 Kirby T Rapstein
- 👤 Frank D Patrick
- 👤 Charles F Schrieber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:25
CPC Classifications
C; C06; C06B; C06B47/00; C06B47/14
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
202 words
A PROCESS FOR PREPARING A WATER-RESISTANT AMMONIUM NITRATE BASED EXPLOSIVE COMPOSITION WHICH COMPRISES, (A) BLENDING POROUS PARTICULATE AMMONIUM NITRATE WITH A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKALINE EARTH METAL AND EARTH METAL SALTS OF ALIPHATIC CARBOXYLIC ACIDS, THE AMOUNT OF SAID SALT RANGING FROM ABOUT 0.5 TO ABOUT 2 WEIGHT PERCENT BASED ON THE WEIGHT OF SAID AMMONIUM NITRATE, SAID SALT HAVING FROM ABOUT 8 TO ABOUT 24 CARBON ATOMS, IN THE ALIPHATIC GROUP, (B) ADDING A PETROLIC LIQUID TO THE BLEND OF SAID FATTY ACID SALT AND SAID AMMONIUM NITRATE, THE AMOUNT OF SAID PETROLIC LIQUID RANGING FROM ABOUT 4 TO ABOUT 8 WEIGHT PERCENT OF THE TOTAL MIXTURE, (C) MIXING SAID PETROLIC LIQUID AND THE BLEND OF SAID FATTY ACID SALT AND PARTICULATED AMMONIUM NITRATE THEREBY TO PROVIDE IN SITU IN AND ON SAID AMMONIUM NITRATE A PROTECTIVE, WATER RESISTANT COATING, AND (D) ADMIXING THE SO-PREPARED WATER RESISTANT COATED POROUS AMMONIUM NITRATE WITH AN AQUEOUS SOLUTION OF AMMONIUM NITRATE, SAID SOLUTION RANGING IN AMMONIUM NITRATE CONCENTRATION FROM ABOUT 60 WEIGHT PERCENT OF SAID SOLUTION UP TO THE SATURATION LEVEL AND THE TOTAL AMOUNT OF WATER AT A MAXIMUM IS ABOUT 15 WEIGHT PERCENT OF THE TOTAL EXPLOSIVE COMPOSITION.
Claim 2
Dependent Claim
202 words
A PROCESS FOR PREPARING A WATER-RESISTANT AMMONIUM NITRATE BASED EXPLOSIVE COMPOSITION WHICH COMPRISES, (A) BLENDING POROUS PARTICULATE AMMONIUM NITRATE WITH A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKALINE EARTH METAL AND EARTH METAL SALTS OF ALIPHATIC CARBOXYLIC ACIDS, THE AMOUNT OF SAID SALT RANGING FROM ABOUT 0.5 TO ABOUT 2 WEIGHT PERCENT BASED ON THE WEIGHT OF SAID AMMONIUM NITRATE, SAID SALT HAVING FROM ABOUT 8 TO ABOUT 24 CARBON ATOMS, IN THE ALIPHATIC GROUP, (B) ADDING A PETROLIC LIQUID TO THE BLEND OF SAID FATTY ACID SALT AND SAID AMMONIUM NITRATE, THE AMOUNT OF SAID PETROLIC LIQUID RANGING FROM ABOUT 4 TO ABOUT 8 WEIGHT PERCENT OF THE TOTAL MIXTURE, (C) MIXING SAID PETROLIC LIQUID AND THE BLEND OF SAID FATTY ACID SALT AND PARTICULATED AMMONIUM NITRATE THEREBY TO PROVIDE IN SITU IN AND ON SAID AMMONIUM NITRATE A PROTECTIVE, WATER RESISTANT COATING, AND (D) ADMIXING THE SO-PREPARED WATER RESISTANT COATED POROUS AMMONIUM NITRATE WITH AN AQUEOUS SOLUTION OF AMMONIUM NITRATE, SAID SOLUTION RANGING IN AMMONIUM NITRATE CONCENTRATION FROM ABOUT 60 WEIGHT PERCENT OF SAID SOLUTION UP TO THE SATURATION LEVEL AND THE TOTAL AMOUNT OF WATER AT A MAXIMUM IS ABOUT 15 WEIGHT PERCENT OF THE TOTAL EXPLOSIVE COMPOSITION.
Claim 3
Dependent Claim
173 words
A POURABLE, SLURRY-TYPE WATER RESISTANT AMMONIUM NITRATE BASED EXPLOSIVE COMPOSITION WHICH COMPRISES; (A) ON A WEIGHT BASIS FROM ABOUT 0.6 TO ABOUT 1.8 PERCENT OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKALINE EARTH METAL AND EARTH METAL ALIPHATIC CARBOXYLIC ACID SALT, THE ALIPHATIC GROUP OF SAID SALT HAVING FROM ABOUT 8 TO ABOUT 24 CARBON ATOMS; (B) FROM ABOUT 2.5 TO ABOUT 8 PERCENT LIQUID HYDROCARBON FUEL, (C) FROM ABOUT 9 TO ABOUT 15 PERCENT WATER, (D) A MAXIMUM OF ABOUT 3 PERCENT THICKENING AGENT, AND (E) BALANCE, POROUS PARTICULATE AMMONIUM NITRATE, SAID COMPOSITION BEING FURTHER CHARACTERIZED IN THAT A PORTION OF SAID AMMONIUM NITRATE IS BLENDED WITH SAID ALIPHATIC CARBOXYLIC ACID SALT AND SAID LIQUID HYDROCARBON THEREBY TO FORM A WATER RESISTANT COATING IN AND ON SAID PARTICULATE AMMONIUM NITRATE AND THE REMAINDER OF SAID AMMONIUM NITRATE IS DISSOLVED IN SAID WATER FORMING A SOLUTION RANGING FROM ABOUT 60 PERCENT TO SATURATION WITH RESPECT TO SAID AMMONIUM NITRATE,SAID SOLUTION BEING ADMIXED WITH SAID WATER RESISTANT COATING CONTAINING PARTICULATE AMMONIUM NITRATE.
Claim 4
Dependent Claim
173 words
A POURABLE, SLURRY-TYPE WATER RESISTANT AMMONIUM NITRATE BASED EXPLOSIVE COMPOSITION WHICH COMPRISES; (A) ON A WEIGHT BASIS FROM ABOUT 0.6 TO ABOUT 1.8 PERCENT OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKALINE EARTH METAL AND EARTH METAL ALIPHATIC CARBOXYLIC ACID SALT, THE ALIPHATIC GROUP OF SAID SALT HAVING FROM ABOUT 8 TO ABOUT 24 CARBON ATOMS; (B) FROM ABOUT 2.5 TO ABOUT 8 PERCENT LIQUID HYDROCARBON FUEL, (C) FROM ABOUT 9 TO ABOUT 15 PERCENT WATER, (D) A MAXIMUM OF ABOUT 3 PERCENT THICKENING AGENT, AND (E) BALANCE, POROUS PARTICULATE AMMONIUM NITRATE, SAID COMPOSITION BEING FURTHER CHARACTERIZED IN THAT A PORTION OF SAID AMMONIUM NITRATE IS BLENDED WITH SAID ALIPHATIC CARBOXYLIC ACID SALT AND SAID LIQUID HYDROCARBON THEREBY TO FORM A WATER RESISTANT COATING IN AND ON SAID PARTICULATE AMMONIUM NITRATE AND THE REMAINDER OF SAID AMMONIUM NITRATE IS DISSOLVED IN SAID WATER FORMING A SOLUTION RANGING FROM ABOUT 60 PERCENT TO SATURATION WITH RESPECT TO SAID AMMONIUM NITRATE,SAID SOLUTION BEING ADMIXED WITH SAID WATER RESISTANT COATING CONTAINING PARTICULATE AMMONIUM NITRATE.
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) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |