US2496358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing condensation products
Assignee: Colgate Palmolive Co
•
Filing: 1946-08-28
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Granted: 1950-02-07
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Expires: 1966-08-28
Abstract
No abstract record available.
Inventors
- 👤 Ross John
- 👤 Gebhart Arthur Ira
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:42
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/54; C07C51/567
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
THE PROCESS COMPRISING TREATING PEROXIDE CONTAMINATED OLEFINIC HYDROCARBONS HAVING 8 TO 24 CARBON ATOMS PER MOLECULE WITH A REDUCING AGENT TO DESTROY THE PEROXIDES, DISTILLING THE HYDROCARBONS FROM THE TREATED MATERIAL WHEREBY A PEROXIDE-FREE DISTILLATE IS OBTAINED, AND HEATING SAID DISTILLATE WHILE STILL PEROXIDE-FREE WITH APPROXIMATELY THE STOICHIOMETRIC AMOUNT OF MALEIC ANHYDRIDE FOR ABOUT ONE TO FOUR HOURS AT A TEMPERATURE OF ABOUT 150* TO 250*C. IN AN INERT ATMOSPHERE WHEREBY SIMPLE CONDENSATION PRODUCTS OF SAID OLEFINE AND SAID MALEIC ANHYDRIDE ARE PRODUCED IN HIGH YIELD RELATIVE TO THE YIELD OF COMPLEX CONDENSATION PRODUCTS.
Claim 2
Dependent Claim
94 words
THE PROCESS COMPRISING TREATING PEROXIDE CONTAMINATED OLEFINIC HYDROCARBONS HAVING 8 TO 24 CARBON ATOMS PER MOLECULE WITH A REDUCING AGENT TO DESTROY THE PEROXIDES, DISTILLING THE HYDROCARBONS FROM THE TREATED MATERIAL WHEREBY A PEROXIDE-FREE DISTILLATE IS OBTAINED, AND HEATING SAID DISTILLATE WHILE STILL PEROXIDE-FREE WITH APPROXIMATELY THE STOICHIOMETRIC AMOUNT OF MALEIC ANHYDRIDE FOR ABOUT ONE TO FOUR HOURS AT A TEMPERATURE OF ABOUT 150* TO 250*C. IN AN INERT ATMOSPHERE WHEREBY SIMPLE CONDENSATION PRODUCTS OF SAID OLEFINE AND SAID MALEIC ANHYDRIDE ARE PRODUCED IN HIGH YIELD RELATIVE TO THE YIELD OF COMPLEX CONDENSATION PRODUCTS.
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) | 1953-02-06 | 1953-08-08 | 1954-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-06 | 1957-08-08 | 1958-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-06 | 1961-08-08 | 1962-02-07 | $7700.00 | Window Closed / Lapsed |