Patent US3024228A successfully refreshed from Google Patents.
US3024228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of polymers from solution
Assignee: —
•
Filing: —
•
Granted: 1962-03-06
•
Expires: 1979-03-06
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:28
CPC Classifications
C; C08; C08F; C08F10/00; C08F6/00; C08F6/02; C08J; C08J11/00; C08J11/04; C08J11/06; C08J11/08; B; B29; B29B; B29B17/00; B29B17/02; B29B2017/0213; B29B2017/0293; C08J2323/00; C08J2323/02; C08J2323/04; C08J2323/06; Y; Y10; Y10S; Y10S159/00; Y10S159/10; Y10S159/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A PROCESS FOR RECOVERING A 1-OLEFIN POLYMER, SAID POLYMER HAVING BEEN PREPARED FROM AN ALIPHATIC 1-OLEFIN OF 2 TO 8 CARBON CARBON ATOMS PER MOLECULE AND HAVING NO BRANCHING NEARER THE DOUBLE BOND THAN THE 4-POSITION, IN GRANULAR, READILY FILTERABLE FORM FROM SOLUTION THEREOF, IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF PARAFFINS AND CYCLOPARAFFINS HAVING 3 TO 12 CARBON ATOMS PER MOLECULE, SAID SOLUTION HAVING A TEMPERATURE AT WHICH SAID POLYMER IS SOLUBLE, SAID PROCESS COMPRISING INTRODUCING SAID SOLUTION DIRECTLY INTO ADDITIONAL SUCH SOLVENT IN LIQUID PHASE AND AT A TEMPERATURE OF AT LEAST 95*F. SO AS TO FORM AN ADMIXTURE HAVING A TEMPERATURE IN THE RANGE 130 TO 170*F. THEREBY PRECIPITATING SAID POLYMER AND THEREAFTER SEPARATING THE PRECIPITATED POLYMER FROM LIQUID.
Claim 2
Dependent Claim
124 words
A PROCESS FOR RECOVERING A 1-OLEFIN POLYMER, SAID POLYMER HAVING BEEN PREPARED FROM AN ALIPHATIC 1-OLEFIN OF 2 TO 8 CARBON CARBON ATOMS PER MOLECULE AND HAVING NO BRANCHING NEARER THE DOUBLE BOND THAN THE 4-POSITION, IN GRANULAR, READILY FILTERABLE FORM FROM SOLUTION THEREOF, IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF PARAFFINS AND CYCLOPARAFFINS HAVING 3 TO 12 CARBON ATOMS PER MOLECULE, SAID SOLUTION HAVING A TEMPERATURE AT WHICH SAID POLYMER IS SOLUBLE, SAID PROCESS COMPRISING INTRODUCING SAID SOLUTION DIRECTLY INTO ADDITIONAL SUCH SOLVENT IN LIQUID PHASE AND AT A TEMPERATURE OF AT LEAST 95*F. SO AS TO FORM AN ADMIXTURE HAVING A TEMPERATURE IN THE RANGE 130 TO 170*F. THEREBY PRECIPITATING SAID POLYMER AND THEREAFTER SEPARATING THE PRECIPITATED POLYMER FROM LIQUID.
References Cited (Backward Citations)
US2914518A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-05 | 1965-09-04 | 1966-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-05 | 1969-09-04 | 1970-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-05 | 1973-09-04 | 1974-03-06 | $7700.00 | Window Closed / Lapsed |