← Back to Patent Explorer
US3078262A Expired / Lapsed US ⏱️ 0.0 years remaining

Polymerization of olefins

Assignee: NL Industries Inc
•
Filing: 1957-12-16
•
Granted: 1963-02-19
•
Expires: 1977-12-16
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

  • 👤 Daniel F Herman
  • 👤 Robert C Kollman

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 03:07
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/06; C08F4/12; C08F10/00

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 133 words
A METHOD FOR POLYMERIZING AN OLEFINICALLY-UNSATURATED MONOMER SELECTED FROM THE GROUP CONSISTING OF ETHYLENE, STYRENE, AND ALKYL-SUBSTITUTED STYRENES WHICH COMPRISES THE STEPS OF POLYMERIZING SAID MONOMERS AT A TEMPERATURE BETWEEN ROOM TEMPERATURE AND 150*C. IN THE PRESENCE OF A CATALYST SYSTEM COMPRISING AN AMINE, SAID AMINE BEING SELECTED FROM THE GROUP CONSISTING OF PYRIDINE AND SECONDARY ALPHATIC, AROMATIC, AND CYCLOALIPHATIC AMINES, AND THE REACTION PRODUCT PREPARED BY ADMIXING A TRANSITION METAL SALT AND A GRIGNARD REAGENT, SAID TRANSITION METAL OF SAID TRANSITION METAL SALT BEING SELECTED FROM THE GROUP CONSISTING OF TITANIUM AND ZIRCONIUM, SAID REACTION PRODUCT CONTAINING AN ORGANIC MOIETY LINKED TO SAID TRANSITION METAL BY A DIRECT METALTO-CARBON BOND, AND WHERE SAID AMINE IS PRESENT IN AMOUNT BETWEEN 0.05 AND 2 GRAM-MOLS OF AMINE FOR EACH GRAMATOM OF SAID TRANSITION METAL.
Claim 2
Independent Claim 133 words
A METHOD FOR POLYMERIZING AN OLEFINICALLY-UNSATURATED MONOMER SELECTED FROM THE GROUP CONSISTING OF ETHYLENE, STYRENE, AND ALKYL-SUBSTITUTED STYRENES WHICH COMPRISES THE STEPS OF POLYMERIZING SAID MONOMERS AT A TEMPERATURE BETWEEN ROOM TEMPERATURE AND 150*C. IN THE PRESENCE OF A CATALYST SYSTEM COMPRISING AN AMINE, SAID AMINE BEING SELECTED FROM THE GROUP CONSISTING OF PYRIDINE AND SECONDARY ALPHATIC, AROMATIC, AND CYCLOALIPHATIC AMINES, AND THE REACTION PRODUCT PREPARED BY ADMIXING A TRANSITION METAL SALT AND A GRIGNARD REAGENT, SAID TRANSITION METAL OF SAID TRANSITION METAL SALT BEING SELECTED FROM THE GROUP CONSISTING OF TITANIUM AND ZIRCONIUM, SAID REACTION PRODUCT CONTAINING AN ORGANIC MOIETY LINKED TO SAID TRANSITION METAL BY A DIRECT METALTO-CARBON BOND, AND WHERE SAID AMINE IS PRESENT IN AMOUNT BETWEEN 0.05 AND 2 GRAM-MOLS OF AMINE FOR EACH GRAMATOM OF SAID TRANSITION METAL.

References Cited (Backward Citations)

US1671517A Cited
US2436614A Cited
US2379687A Cited
US2530409A Cited
US2905645A Cited
US2721189A Cited
US2839518A Cited
US2932633A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1966-02-18 1966-08-20 1967-02-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1970-02-18 1970-08-20 1971-02-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1974-02-18 1974-08-20 1975-02-19 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag