US3084149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of
Assignee: —
•
Filing: —
•
Granted: 1963-04-02
•
Expires: 1980-04-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:18
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/04; C08F2/06; B; B01; B01D; B01D3/00; B01D3/02; C08F2/12; C08F2/14; C08F210/00; C08F210/16; C08F6/00; C08F6/001; C08F6/003; C08F6/02; C08L; C08L23/00; Y; Y10; Y10S; Y10S159/00; Y10S159/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
195 words
IN THE METHOD FOR RECOVERING SOLVENT FOR REUSE IN POLYMERIZING OLEFINS IN OLUTION IN AN INERT SOLVENT SEPAIN NORMALLY SOLID POLYMER REMAINS IN THE SOLVENT SEPARATED FROM THE POLYMERIZATION ZONE EFFLUENT, THE IMPROVEMENT COMPRISING SUBJECTING SAID SOLVENT FROM WHICH AT LEST ABOUT 90 WEIGHT PERCENT OF THE NORMALLY SOLID POLYMER PRODUCED IN SAID POLYMERIZATION ZONE HAS BEEN REMOVED TO DISTINATION; REMOVING A BOTTOM PRODUCT COMPRISING A VISCOUS SOLUTION OF NOT MORE THAN ABOUT 25 WEIGHT PERCENT POLYMER IN SOLVENT FROM THE BOTTOM OF SAID DISTILLATION; PASSING A STREAM CONSISTING ESSENTIALLY OF SAID BOTTOM PRODUCT TO A ZONE OF REDUCED PRESSURE REMOVING FROM SAID ZONE OF REDUCED PRESSURE, VAPORS EVOLVED FROM SAID BOTTOM PRODUCT; REMOVING A POLYMER RICH STREAM FROM SAID ZONE OF REDUCED PRESSURE; CONDENSING SAID VAPORS; PASSING THE RESULTING CONDENSATE TO SAID DISTILLATION; COOLING AND DENSING AAT LEAST A PORTION OF THE OVERHEAD VAPORS OF SAID DISTILLATION; REMOVING FREE WATER FROM THE CONDENSATE; RETURNING A FIRST PORTION OF CONDENSATE TO SAID DISTILLATION AS REFLUX; PASSING A SECOND PORTION OF CONDENSATE TO A DEGASSING AND DEHYDRATING STEP; COOLING AND CONDENSING AT LEAST A PORTION OF THE OVERHEAD VAPORS OF SAID DEGASSING AND DEHYDRATING STEP; REMOVING
Claim 2
Dependent Claim
195 words
IN THE METHOD FOR RECOVERING SOLVENT FOR REUSE IN POLYMERIZING OLEFINS IN OLUTION IN AN INERT SOLVENT SEPAIN NORMALLY SOLID POLYMER REMAINS IN THE SOLVENT SEPARATED FROM THE POLYMERIZATION ZONE EFFLUENT, THE IMPROVEMENT COMPRISING SUBJECTING SAID SOLVENT FROM WHICH AT LEST ABOUT 90 WEIGHT PERCENT OF THE NORMALLY SOLID POLYMER PRODUCED IN SAID POLYMERIZATION ZONE HAS BEEN REMOVED TO DISTINATION; REMOVING A BOTTOM PRODUCT COMPRISING A VISCOUS SOLUTION OF NOT MORE THAN ABOUT 25 WEIGHT PERCENT POLYMER IN SOLVENT FROM THE BOTTOM OF SAID DISTILLATION; PASSING A STREAM CONSISTING ESSENTIALLY OF SAID BOTTOM PRODUCT TO A ZONE OF REDUCED PRESSURE REMOVING FROM SAID ZONE OF REDUCED PRESSURE, VAPORS EVOLVED FROM SAID BOTTOM PRODUCT; REMOVING A POLYMER RICH STREAM FROM SAID ZONE OF REDUCED PRESSURE; CONDENSING SAID VAPORS; PASSING THE RESULTING CONDENSATE TO SAID DISTILLATION; COOLING AND DENSING AAT LEAST A PORTION OF THE OVERHEAD VAPORS OF SAID DISTILLATION; REMOVING FREE WATER FROM THE CONDENSATE; RETURNING A FIRST PORTION OF CONDENSATE TO SAID DISTILLATION AS REFLUX; PASSING A SECOND PORTION OF CONDENSATE TO A DEGASSING AND DEHYDRATING STEP; COOLING AND CONDENSING AT LEAST A PORTION OF THE OVERHEAD VAPORS OF SAID DEGASSING AND DEHYDRATING STEP; REMOVING
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |