US2805258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of hydroperoxides from diisopropylbenzenes
Assignee: Beazer East Inc
•
Filing: 1955-05-23
•
Granted: 1957-09-03
•
Expires: 1975-05-23
Abstract
No abstract record available.
Inventors
- 👤 Norman S Boodman
- 👤 Charles F Fryling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:53
CPC Classifications
C; C07; C07C; C07C409/00; C07C409/02; C07C409/04; C07C409/08; C07C409/12; C07C407/00; C07C407/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A PROCESS FOR THE PRODUCTION OF A DIISOPROPYLBENZENE HYDROPEROXIDE-CONTAINING REACTION MIXTURE WHICH COMPRISES SUBJECTING A MEMBER SELECTED FROM TEH GROUP CONSISTING OF M-DIISOPROPYLBENENE, P-DIISOPROYLBENZENE AND MIXTURES OF M- AND P-DIISOPROPYLBENZENE CONTAINING IMPURITIES INCLUDING TRIMETHYLINDAN AND O-DIISOPROPYLBENZENE IS LIQUID PHASE TO ALKYLATING CONDITIONS IN CONTACT WITH AN ALKYLATION CATALYST AND AN ALKYLATING AGENT HAVING AT LEAST ONE TERTIARY CARBON ATOM PER MOLECULE, THE MOLAR RATIO OF SAID ALKYLATING AGENT TO SAID IMPURITIES INCLUDING TRIMETHYLINDAN AND O-DIISOPROPYLBENZENE BEING FROM ABOUT 1.2-4 TO 1, TO ALKIATE SAID IMPURITIES INCLUDING TRIMETHYLINDAN AND O-DIISOPROPYLBENZENE WHILE SAID SELECTED MEMBER OF THE GROUP CONSISTING OF M-DIISOPROPLBENZENE , P-DIISOPROPYLBENZENE AND MIXTURES OF M- AND P-DISSOPROPYLBENZENE REMAINS SUBSTANTIALLY UNALKYLATED, DISTILLING THE REACTION MIXTURE TO DISTILL THE SUBSTANTIALLY UNALKYLATED MEMBER THEREFROM AND LEAVE THE AFORESAID ALKYLATED IMPURITIES IN THE RESIDUE, AND THEREAFTER TREATING THE AFORESAID DISTILLED UNALKYLATED MEMBER IN LIQUID PHASE WITH A FREE OXYGEN-CONTAINING GAS AT A TEMPERATURE OF FROM ABOUT 50*C. TO ABOUT 120*C.
Claim 2
Dependent Claim
156 words
A PROCESS FOR THE PRODUCTION OF A DIISOPROPYLBENZENE HYDROPEROXIDE-CONTAINING REACTION MIXTURE WHICH COMPRISES SUBJECTING A MEMBER SELECTED FROM TEH GROUP CONSISTING OF M-DIISOPROPYLBENENE, P-DIISOPROYLBENZENE AND MIXTURES OF M- AND P-DIISOPROPYLBENZENE CONTAINING IMPURITIES INCLUDING TRIMETHYLINDAN AND O-DIISOPROPYLBENZENE IS LIQUID PHASE TO ALKYLATING CONDITIONS IN CONTACT WITH AN ALKYLATION CATALYST AND AN ALKYLATING AGENT HAVING AT LEAST ONE TERTIARY CARBON ATOM PER MOLECULE, THE MOLAR RATIO OF SAID ALKYLATING AGENT TO SAID IMPURITIES INCLUDING TRIMETHYLINDAN AND O-DIISOPROPYLBENZENE BEING FROM ABOUT 1.2-4 TO 1, TO ALKIATE SAID IMPURITIES INCLUDING TRIMETHYLINDAN AND O-DIISOPROPYLBENZENE WHILE SAID SELECTED MEMBER OF THE GROUP CONSISTING OF M-DIISOPROPLBENZENE , P-DIISOPROPYLBENZENE AND MIXTURES OF M- AND P-DISSOPROPYLBENZENE REMAINS SUBSTANTIALLY UNALKYLATED, DISTILLING THE REACTION MIXTURE TO DISTILL THE SUBSTANTIALLY UNALKYLATED MEMBER THEREFROM AND LEAVE THE AFORESAID ALKYLATED IMPURITIES IN THE RESIDUE, AND THEREAFTER TREATING THE AFORESAID DISTILLED UNALKYLATED MEMBER IN LIQUID PHASE WITH A FREE OXYGEN-CONTAINING GAS AT A TEMPERATURE OF FROM ABOUT 50*C. TO ABOUT 120*C.
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) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |