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Title: Living olefin polymerization processes

Abstract

Processes for the living polymerization of olefin monomers with terminal carbon-carbon double bonds are disclosed. The processes employ initiators that include a metal atom and a ligand having two group 15 atoms and a group 16 atom or three group 15 atoms. The ligand is bonded to the metal atom through two anionic or covalent bonds and a dative bond. The initiators are particularly stable under reaction conditions in the absence of olefin monomer. The processes provide polymers having low polydispersities, especially block copolymers having low polydispersities. It is an additional advantage of these processes that, during block copolymer synthesis, a relatively small amount of homopolymer is formed.

Inventors:
;
Issue Date:
Research Org.:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1174464
Patent Number(s):
6610806
Application Number:
09/935,775
Assignee:
Massachusetts Institute of Technology (Cambridge, MA)
Patent Classifications (CPCs):
C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07F - ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
DOE Contract Number:  
FG02-86ER13564
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Schrock, Richard R., and Baumann, Robert. Living olefin polymerization processes. United States: N. p., 2003. Web.
Schrock, Richard R., & Baumann, Robert. Living olefin polymerization processes. United States.
Schrock, Richard R., and Baumann, Robert. Tue . "Living olefin polymerization processes". United States. https://www.osti.gov/servlets/purl/1174464.
@article{osti_1174464,
title = {Living olefin polymerization processes},
author = {Schrock, Richard R. and Baumann, Robert},
abstractNote = {Processes for the living polymerization of olefin monomers with terminal carbon-carbon double bonds are disclosed. The processes employ initiators that include a metal atom and a ligand having two group 15 atoms and a group 16 atom or three group 15 atoms. The ligand is bonded to the metal atom through two anionic or covalent bonds and a dative bond. The initiators are particularly stable under reaction conditions in the absence of olefin monomer. The processes provide polymers having low polydispersities, especially block copolymers having low polydispersities. It is an additional advantage of these processes that, during block copolymer synthesis, a relatively small amount of homopolymer is formed.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2003},
month = {8}
}

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Works referenced in this record:

Living Polymerization of α-Olefins by Chelating Diamide Complexes of Titanium
journal, January 1996


Polymerization of propene with enantiomorphic site catalysts, 1. A statistical analysis
journal, October 1996


Synthesis, Structures, Bonding, and Ethylene Reactivity of Group 4 Metal Alkyl Complexes Incorporating 8-Quinolinolato Ligands
journal, July 1997


Synthesis, Structure, and Reactivity of Zirconium Alkyl Complexes Bearing Ancillary Pyridine Diamide Ligands
journal, November 1998


Conformationally Rigid Diamide Complexes:  Synthesis and Structure of Titanium(IV) Alkyl Derivatives
journal, January 1996


Cationic Alkylzirconium Complexes Based on a Tridentate Diamide Ligand:  New Alkene Polymerization Catalysts
journal, January 1996