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US2886561A Expired / Lapsed US ⏱️ 0.0 years remaining

Polymers and method of making the same

Assignee: Phillips Petroleum Co
•
Filing: 1956-08-22
•
Granted: 1959-05-12
•
Expires: 1976-08-22
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Abstract

No abstract record available.

Inventors

  • 👤 William B Reynolds
  • 👤 Jr Benedict H Ashe

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 13:55
CPC Classifications
C; C08; C08C; C08C2/00; C08C2/02; C08F; C08F6/00; C08F6/06; Y; Y10; Y10S; Y10S159/00; Y10S159/10

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 148 words
THE METHOD OF REMOVING IMPURITIES FROM APOLYMER PREPARED BY CATALYTIC POLYMERIZATION IN THE PRESENCE OF A CATALYST HAVING AT LEAST TWO ESSENTIAL COMPONENTS ONE OF SAID COMPONENTS BEING A METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF GROUP IV, GROUP V AND GROUP VI METAL COMPOUNDS, AND ANOTHER OF SAID COMPONENTS BEING SELECTED FROM THE GROUP CONSISTING OF ORGANOMETAL COMPOUNDS, METAL HYDRIDES, AND METALS OF GROUPS 1, 11 AND 111, WHICH COMPRISES CONTACING A SOLUTION OF SAID POLYMER IN A RELATIVELY INERT, NON-DELETERIOUS SOLVENT, LIQUID UNDER THE CONDITIONS OF THE PROCESS CONTAINING SAID IMPURITIES AND A LIQUID TREATING AGENT IMMISCIBLE WITH SAID SOLUTION AT A TEMPERATURE OF AT LEAST 180*F., FORMING TWO SEPARATE PHASE FROM THE CONTACTED MATERIALS, NAMELY, A SOLVENT PHASE CONTAINING SAID POLYMER AND A LIQUID TREATING AGENT PHASE, SAID TREATING AGENT SELECTIVELY EXTRACTING IMPURITIES FROM THE SOLVENT PHASE, AND RECOVERING POLYMER FROM SAID SOLVENT PHASE.
Claim 2
Independent Claim 148 words
THE METHOD OF REMOVING IMPURITIES FROM APOLYMER PREPARED BY CATALYTIC POLYMERIZATION IN THE PRESENCE OF A CATALYST HAVING AT LEAST TWO ESSENTIAL COMPONENTS ONE OF SAID COMPONENTS BEING A METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF GROUP IV, GROUP V AND GROUP VI METAL COMPOUNDS, AND ANOTHER OF SAID COMPONENTS BEING SELECTED FROM THE GROUP CONSISTING OF ORGANOMETAL COMPOUNDS, METAL HYDRIDES, AND METALS OF GROUPS 1, 11 AND 111, WHICH COMPRISES CONTACING A SOLUTION OF SAID POLYMER IN A RELATIVELY INERT, NON-DELETERIOUS SOLVENT, LIQUID UNDER THE CONDITIONS OF THE PROCESS CONTAINING SAID IMPURITIES AND A LIQUID TREATING AGENT IMMISCIBLE WITH SAID SOLUTION AT A TEMPERATURE OF AT LEAST 180*F., FORMING TWO SEPARATE PHASE FROM THE CONTACTED MATERIALS, NAMELY, A SOLVENT PHASE CONTAINING SAID POLYMER AND A LIQUID TREATING AGENT PHASE, SAID TREATING AGENT SELECTIVELY EXTRACTING IMPURITIES FROM THE SOLVENT PHASE, AND RECOVERING POLYMER FROM SAID SOLVENT PHASE.

References Cited (Backward Citations)

US2463866A Cited
US2530144A Cited
US2691647A Cited
US2762791A Cited
BE533362A Cited
US2827447A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1962-05-11 1962-11-10 1963-05-12 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1966-05-11 1966-11-10 1967-05-12 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1970-05-11 1970-11-10 1971-05-12 $7700.00 Window Closed / Lapsed

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