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US3023191A Expired / Lapsed US ⏱️ 0.0 years remaining

Continuous process for chemically modifying iso-olefin-multiolefin rubbery polymer

Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1956-12-03
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Granted: 1962-02-27
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Expires: 1976-12-03
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Abstract

No abstract record available.

Inventors

  • 👤 Bruce R Tegge
  • 👤 Francis P Baldwin
  • 👤 George E Serniuk

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 16:08
CPC Classifications
C; C08; C08F; C08F8/00; Y; Y10; Y10S; Y10S524/00; Y10S524/923

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 230 words
IN THE CONTINUOUS PROCESS FOR MAKING AND RECOVERING A RUBBERY POLYMER OF A MAJOR PROPORTION OF A C4 TO C7 ISOOLEFIN WITH A MINOR PROPORTION OF A C4 TO C14 MULTIOLEFIN MADE BY CONTINUOUS FRIEDEL-CRAFTS POLYMERIZATION WHICH IS A FIRST NON-SOLVENT FOR THE POLYMER THEREFROM, WHEREBY THERE IS CONTINUOUSLY PRODUCED A POLYMERIZATION REACTION FIRST SLURRY DISPERSED IN A LIQUID MEDIUM CONSISTING ESSENTIALLY OF SAID ALKYL HALIDE DILUENT, THE IMPROVEMENT WHICH COMPRISES; CONTACTING SAID FIRST SLURRY AT A TEMPERATURE ABOVE THE BOILING POINT OF SAID SLURRY WITH A C5 TO C10 LIQUID HYDROCARBON SOLVENT FOR THE POLYMER TO VOLATIZE SAID DILUENT THEREFROM AND TO DIRECTLY DISSOLVE POLYMER THEREIN WHILE MAINTAINING THE TEMPERATURE BETWEEN 20 AND 100*C., SAID SOLVENT BOILING ABOVE THE BOILING POINT OF SAID DILUENT; REACTING THE POLYMER IN SOLUTION CHEMICALLY BY INCORPORATING INTO SAID SOLUTION A MATERIAL SELECTED FROM THE GROUP CONSISTING OF SULFENYL HALIDES, SELENENYL HALIDES, N-NITROSO-P-NITROSO ALKYL ANILINE, AZOMONOCARBOXYLATED, AZODICARBOXYLATES, C1 TO C10 ALIPHATIC, ALDEHYDES, C1 TO C10 AROMATIC ALDEHYDES, A HALOGEN AND MIXTURES THEREOF; CONTACTING SAID SOLUTION HAVING SAID CHEMICALLY REACTED POLYMER THEREIN WITH A SECOND NONSOLVENT AQUEOUS LIQUID MEDIUM AT A TEMPERATURE ABOVE THE BOILING POINT OF SAID SOLVENT TO VOALATIZE SOLVENT THEREFROM AND TO FORM A SECOND SLURRY OF COPOLYMER IN SAID SECOND NON-SOLVENT, SAID SECOND NON-SOLVENT BOILING RECOVTHE BOILING POINT OF SAID SOLVENT; AND SUBSEQUENTLY RECOVERING SAID REACTED POLYMER FROM SAID SECOND SLURRY.
Claim 2
Dependent Claim 230 words
IN THE CONTINUOUS PROCESS FOR MAKING AND RECOVERING A RUBBERY POLYMER OF A MAJOR PROPORTION OF A C4 TO C7 ISOOLEFIN WITH A MINOR PROPORTION OF A C4 TO C14 MULTIOLEFIN MADE BY CONTINUOUS FRIEDEL-CRAFTS POLYMERIZATION WHICH IS A FIRST NON-SOLVENT FOR THE POLYMER THEREFROM, WHEREBY THERE IS CONTINUOUSLY PRODUCED A POLYMERIZATION REACTION FIRST SLURRY DISPERSED IN A LIQUID MEDIUM CONSISTING ESSENTIALLY OF SAID ALKYL HALIDE DILUENT, THE IMPROVEMENT WHICH COMPRISES; CONTACTING SAID FIRST SLURRY AT A TEMPERATURE ABOVE THE BOILING POINT OF SAID SLURRY WITH A C5 TO C10 LIQUID HYDROCARBON SOLVENT FOR THE POLYMER TO VOLATIZE SAID DILUENT THEREFROM AND TO DIRECTLY DISSOLVE POLYMER THEREIN WHILE MAINTAINING THE TEMPERATURE BETWEEN 20 AND 100*C., SAID SOLVENT BOILING ABOVE THE BOILING POINT OF SAID DILUENT; REACTING THE POLYMER IN SOLUTION CHEMICALLY BY INCORPORATING INTO SAID SOLUTION A MATERIAL SELECTED FROM THE GROUP CONSISTING OF SULFENYL HALIDES, SELENENYL HALIDES, N-NITROSO-P-NITROSO ALKYL ANILINE, AZOMONOCARBOXYLATED, AZODICARBOXYLATES, C1 TO C10 ALIPHATIC, ALDEHYDES, C1 TO C10 AROMATIC ALDEHYDES, A HALOGEN AND MIXTURES THEREOF; CONTACTING SAID SOLUTION HAVING SAID CHEMICALLY REACTED POLYMER THEREIN WITH A SECOND NONSOLVENT AQUEOUS LIQUID MEDIUM AT A TEMPERATURE ABOVE THE BOILING POINT OF SAID SOLVENT TO VOALATIZE SOLVENT THEREFROM AND TO FORM A SECOND SLURRY OF COPOLYMER IN SAID SECOND NON-SOLVENT, SAID SECOND NON-SOLVENT BOILING RECOVTHE BOILING POINT OF SAID SOLVENT; AND SUBSEQUENTLY RECOVERING SAID REACTED POLYMER FROM SAID SECOND SLURRY.

References Cited (Backward Citations)

US2292737A Cited
US2376027A Cited
US2537627A Cited
US2616876A Cited
US2631984A Cited
US2732354A Cited
US2891595A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1965-02-26 1965-08-28 1966-02-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1969-02-26 1969-08-28 1970-02-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1973-02-26 1973-08-28 1974-02-27 $7700.00 Window Closed / Lapsed

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