US3342849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of aliphatic nitriles
Assignee: Petro Tex Chemical Corp
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Filing: 1963-11-01
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Granted: 1967-09-19
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Expires: 1983-11-01
Abstract
No abstract record available.
Inventors
- 👤 William F Brill
- 👤 Alfio J Besozzi
- 👤 Joseph H Finley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:41
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/24; C07C253/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A PROCESS FOR THE PRODUCTION OF METHACRYLONITRILE COMPRISING CONTACTING ISOBUTYLENE IN A TUBULAR REACTOR AT A TEMPERATURE BETWEEN ABOUT 450*C. AND 650*C. WITH OXYGEN AND AMMONIA WITH A CATALYST CONSISTING ESSENTIALLY OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM OXIDE AND MOLYBDENUM OXIDE ADMIXED WITH AT LEAST ONE OF VANADIUM OXIDE, CHROMIUM OXIDE, TUNGSTEN OXIDE, IRON OXIDE, NICKEL OXIDE OR PHOSPHORUS PENTOXIDE, SAID CATALYST BEING PRESENT ON THE WALLS OF THE TUBULAR REACTOR AND HAVING A CATALYST SURFACE AREA TO REACTION ZONE FREE VOLUME RATIO OF BETWEEN 0.01 TO 50 SQUARE INCHES PER CUBIC INCH OF FREE VOLUME, SAID OXYGEN BEING PRESENT IN MOL RATIOS BETWEEN ABOUT 1 TO 4 MOLS OF OXYGEN PER MOL OF ISOBUTYLENE AND SAID AMMONIA BEING PRESENT IN MOL RATIOS BETWEEN ABOUT 1 TO 9 MOLS OF AMMONIA PER MOL OF ISOBUTYLENE.
Claim 2
Dependent Claim
139 words
A PROCESS FOR THE PRODUCTION OF METHACRYLONITRILE COMPRISING CONTACTING ISOBUTYLENE IN A TUBULAR REACTOR AT A TEMPERATURE BETWEEN ABOUT 450*C. AND 650*C. WITH OXYGEN AND AMMONIA WITH A CATALYST CONSISTING ESSENTIALLY OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM OXIDE AND MOLYBDENUM OXIDE ADMIXED WITH AT LEAST ONE OF VANADIUM OXIDE, CHROMIUM OXIDE, TUNGSTEN OXIDE, IRON OXIDE, NICKEL OXIDE OR PHOSPHORUS PENTOXIDE, SAID CATALYST BEING PRESENT ON THE WALLS OF THE TUBULAR REACTOR AND HAVING A CATALYST SURFACE AREA TO REACTION ZONE FREE VOLUME RATIO OF BETWEEN 0.01 TO 50 SQUARE INCHES PER CUBIC INCH OF FREE VOLUME, SAID OXYGEN BEING PRESENT IN MOL RATIOS BETWEEN ABOUT 1 TO 4 MOLS OF OXYGEN PER MOL OF ISOBUTYLENE AND SAID AMMONIA BEING PRESENT IN MOL RATIOS BETWEEN ABOUT 1 TO 9 MOLS OF AMMONIA PER MOL OF ISOBUTYLENE.
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) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |