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US3842145A Expired / Lapsed US ⏱️ 0.0 years remaining

Polymerization of unsaturated monomers with multilithium initiators

Assignee: Phillips Petroleum Co
•
Filing: 1972-12-21
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Granted: 1974-10-15
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Expires: 1992-12-21
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Abstract

Abstract 1. A POLYMERIZATION PROCESS WHICH COMPRISES POLYMERIZING AT LEAST ONE POLYMERIZABLE MONOMER COMPRISING A POLYMERIZABLE CONJUGATED DIENE, POLYMERIZABLE MONOVINYL-SUBSTITUTED AROMATIC COMPOUND, OR BOTH, IN THE PRESENCE OF THE MULTILITHIUM POLYMERIZATION INITIATOR PREPARED BY THE PROCESS COMPRISING ADMIXING IN THE PRESENCE OF A HYDROCARBON DILUENT (I) AT LEAST ONE ORGANOMONOLITHIUM COMPOUND WHICH IS SEC-ALKYLLITHIUM, TERT-ALKYLLITHIUM, OR CYCLOALKYLLITHIUM COMPOUND WITH (II) MULTIMETHYL AROMATIC HYDROCARBON COMPOUND CONTAINING UP TO 5 CARBOCYCLIC RINGS AND ONLY AROMATIC RINGS PER MOLECULE WHEREIN SAID MULTIMETHYL AROMATIC HYDROCARBON COMPOUND CONTAINS 2 TO 10 METHYL GROUPS AND A TOTAL OF 8 TO 30 CARBON ATOMS PER MOLECULE AND IN ADDITION THERETO CAN CONTAIN HYDROCARBYL SUBSTITUENTS IN ADDITION TO SAID METHYL GROUPS SELECTED FROM THE GROUP CONSISTING OF ALKYL, CYCLOALKYL, AND ARALKYL, CONTAINING 2 TO 10 CARBON ATOMS PER GROUP.

Inventors

  • 👤 H Hsieh

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 12:09
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/06; C08F4/12; C07; C07F; C07F1/00; C07F1/02; C08F36/00; C08F36/02; C08F36/04

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 129 words
A POLYMERIZATION PROCESS WHICH COMPRISES POLYMERIZING AT LEAST ONE POLYMERIZABLE MONOMER COMPRISING A POLYMERIZABLE CONJUGATED DIENE, POLYMERIZABLE MONOVINYL-SUBSTITUTED AROMATIC COMPOUND, OR BOTH, IN THE PRESENCE OF THE MULTILITHIUM POLYMERIZATION INITIATOR PREPARED BY THE PROCESS COMPRISING ADMIXING IN THE PRESENCE OF A HYDROCARBON DILUENT (I) AT LEAST ONE ORGANOMONOLITHIUM COMPOUND WHICH IS SEC-ALKYLLITHIUM, TERT-ALKYLLITHIUM, OR CYCLOALKYLLITHIUM COMPOUND WITH (II) MULTIMETHYL AROMATIC HYDROCARBON COMPOUND CONTAINING UP TO 5 CARBOCYCLIC RINGS AND ONLY AROMATIC RINGS PER MOLECULE WHEREIN SAID MULTIMETHYL AROMATIC HYDROCARBON COMPOUND CONTAINS 2 TO 10 METHYL GROUPS AND A TOTAL OF 8 TO 30 CARBON ATOMS PER MOLECULE AND IN ADDITION THERETO CAN CONTAIN HYDROCARBYL SUBSTITUENTS IN ADDITION TO SAID METHYL GROUPS SELECTED FROM THE GROUP CONSISTING OF ALKYL, CYCLOALKYL, AND ARALKYL, CONTAINING 2 TO 10 CARBON ATOMS PER GROUP.
Claim 2
Dependent Claim 129 words
A POLYMERIZATION PROCESS WHICH COMPRISES POLYMERIZING AT LEAST ONE POLYMERIZABLE MONOMER COMPRISING A POLYMERIZABLE CONJUGATED DIENE, POLYMERIZABLE MONOVINYL-SUBSTITUTED AROMATIC COMPOUND, OR BOTH, IN THE PRESENCE OF THE MULTILITHIUM POLYMERIZATION INITIATOR PREPARED BY THE PROCESS COMPRISING ADMIXING IN THE PRESENCE OF A HYDROCARBON DILUENT (I) AT LEAST ONE ORGANOMONOLITHIUM COMPOUND WHICH IS SEC-ALKYLLITHIUM, TERT-ALKYLLITHIUM, OR CYCLOALKYLLITHIUM COMPOUND WITH (II) MULTIMETHYL AROMATIC HYDROCARBON COMPOUND CONTAINING UP TO 5 CARBOCYCLIC RINGS AND ONLY AROMATIC RINGS PER MOLECULE WHEREIN SAID MULTIMETHYL AROMATIC HYDROCARBON COMPOUND CONTAINS 2 TO 10 METHYL GROUPS AND A TOTAL OF 8 TO 30 CARBON ATOMS PER MOLECULE AND IN ADDITION THERETO CAN CONTAIN HYDROCARBYL SUBSTITUENTS IN ADDITION TO SAID METHYL GROUPS SELECTED FROM THE GROUP CONSISTING OF ALKYL, CYCLOALKYL, AND ARALKYL, CONTAINING 2 TO 10 CARBON ATOMS PER GROUP.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-10-14 1978-04-15 1978-10-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-10-14 1982-04-15 1982-10-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-10-14 1986-04-15 1986-10-15 $7700.00 Window Closed / Lapsed

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