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:
-
- Winchester, MA
- Cambridge, MA
- Issue Date:
- Research Org.:
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- OSTI Identifier:
- 872230
- Patent Number(s):
- 5889128
- Assignee:
- Massachusetts Institute of Technology (Cambridge, MA)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07C - ACYCLIC OR CARBOCYCLIC COMPOUNDS
C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07F - ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- DOE Contract Number:
- FG02-86ER13564
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- living; olefin; polymerization; processes; monomers; terminal; carbon-carbon; double; bonds; disclosed; employ; initiators; metal; atom; ligand; 15; atoms; 16; bonded; anionic; covalent; dative; bond; particularly; stable; reaction; conditions; absence; monomer; provide; polymers; polydispersities; especially; block; copolymers; additional; advantage; copolymer; synthesis; relatively; amount; homopolymer; formed; block copolymer; metal atom; additional advantage; polymer synthesis; carbon-carbon double; reaction conditions; olefin polymerization; double bonds; block copolymers; polymerization processes; olefin polymer; olefin monomers; olefin monomer; polymerization process; double bond; /526/502/522/
Citation Formats
Schrock, Richard R, and Baumann, Robert. Living olefin polymerization processes. United States: N. p., 1999.
Web.
Schrock, Richard R, & Baumann, Robert. Living olefin polymerization processes. United States.
Schrock, Richard R, and Baumann, Robert. Fri .
"Living olefin polymerization processes". United States. https://www.osti.gov/servlets/purl/872230.
@article{osti_872230,
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 = {Fri Jan 01 00:00:00 EST 1999},
month = {Fri Jan 01 00:00:00 EST 1999}
}
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