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, Washington, DC (United States)
- OSTI Identifier:
- 335432
- Patent Number(s):
- 5889128
- Application Number:
- PAN: 8-843,161
- Assignee:
- Massachusetts Inst. of Tech., Cambridge, MA (United States)
- DOE Contract Number:
- FG02-86ER13564
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 30 Mar 1999
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; COPOLYMERS; SYNTHESIS; ALKENES; POLYMERIZATION; CHEMICAL COMPOSITION
Citation Formats
Schrock, R R, and Baumann, R. Living olefin polymerization processes. United States: N. p., 1999.
Web.
Schrock, R R, & Baumann, R. Living olefin polymerization processes. United States.
Schrock, R R, and Baumann, R. Tue .
"Living olefin polymerization processes". United States.
@article{osti_335432,
title = {Living olefin polymerization processes},
author = {Schrock, R R and Baumann, R},
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 = {1999},
month = {3}
}
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