US2734892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of a
Assignee: —
•
Filing: —
•
Granted: 1956-02-14
•
Expires: 1973-02-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:44
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/06; C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S260/00; Y10S260/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A PROCESS FOR THE REMOVAL OF ALCL3 CATALYST FROM A REACTION MASS PRODUCED BY AN ALCL3-CATALYZED FRIEDELCRAFTS POLYMERIZATION REACTION WHEREIN ALL OF THE ORGANIC REACTANTS ARE SELECTED FROM THE GROUP CONSISTING OF ETHYLENICALLY UNSATURATED HYDROCARBONS AND HALOGENATED HYDROCARBONS WHICH COMPRISES ADDING TO SAID REACTION MASS AN ALKALINE MATERIAL SELECTED FROM THE GROUP CONSISTING OF CAO, CA(OH)2, MGO AND MG(OH)2, AND A LIQUID CONSISTING OF WATER; AGITATING THE RESULTING MIXTURE, AND REMOVING THE RESULTING PRECIPITATE, SAID ALKALINE MATERIAL BEING EMPOLOYED IN AN AMOUNT OF AT LEAST 1.5 MOLE PER MOLE OF ALCL3 PRESENT AND SAID WATER BEING EMPLOYED IN EXCESS OF THE AMOUNT OF WATER NECESSARY TO HYDRATE ANY OXIDE EMPLOYED AS ALKALINE MATERIAL, SAID EXCESS BEING IN AN AMOUNT FROM ABOUT 0.75 TO 15 MOLES OF WATER PER MOLE OF ALC3 PRESENT.
Claim 2
Dependent Claim
132 words
A PROCESS FOR THE REMOVAL OF ALCL3 CATALYST FROM A REACTION MASS PRODUCED BY AN ALCL3-CATALYZED FRIEDELCRAFTS POLYMERIZATION REACTION WHEREIN ALL OF THE ORGANIC REACTANTS ARE SELECTED FROM THE GROUP CONSISTING OF ETHYLENICALLY UNSATURATED HYDROCARBONS AND HALOGENATED HYDROCARBONS WHICH COMPRISES ADDING TO SAID REACTION MASS AN ALKALINE MATERIAL SELECTED FROM THE GROUP CONSISTING OF CAO, CA(OH)2, MGO AND MG(OH)2, AND A LIQUID CONSISTING OF WATER; AGITATING THE RESULTING MIXTURE, AND REMOVING THE RESULTING PRECIPITATE, SAID ALKALINE MATERIAL BEING EMPOLOYED IN AN AMOUNT OF AT LEAST 1.5 MOLE PER MOLE OF ALCL3 PRESENT AND SAID WATER BEING EMPLOYED IN EXCESS OF THE AMOUNT OF WATER NECESSARY TO HYDRATE ANY OXIDE EMPLOYED AS ALKALINE MATERIAL, SAID EXCESS BEING IN AN AMOUNT FROM ABOUT 0.75 TO 15 MOLES OF WATER PER MOLE OF ALC3 PRESENT.
References Cited (Backward Citations)
US2119957A
Cited
US2555221A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-13 | 1959-08-15 | 1960-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-13 | 1963-08-15 | 1964-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-13 | 1967-08-15 | 1968-02-14 | $7700.00 | Window Closed / Lapsed |