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:

Schrock, Richard R.; Bauman, Robert

Issue Date:

2006-11-14

Research Org.:

Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1175990

Patent Number(s):

7135544

Application Number:

11/004,038

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

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C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07C - ACYCLIC OR CARBOCYCLIC COMPOUNDS

C07C217/08 - the oxygen atom of the etherified hydroxy group being further bound to an acyclic carbon atom
C07C217/90 - the oxygen atom of at least one of the etherified hydroxy groups being further bound to a carbon atom of a six-membered aromatic ring, e.g. amino-diphenylethers

C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07F - ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM

C07F7/00 - Compounds containing elements of Groups 4 or 14 of the Periodic System
C07F7/003 - {without C-Metal linkages}
C07F7/28 - Titanium compounds

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08F - MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS

C08F10/00 - Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
C08F4/64141 - {Dianionic ligand}

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

Y10S526/903 - Monomer polymerized in presence of transition metal containing catalyst and hydrocarbon additive affecting polymer properties of catalyst activity

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DOE Contract Number:  

FG02-86ER13564

Resource Type:

Patent

Resource Relation:

Patent File Date: 2004 Dec 03

Country of Publication:

United States

Language:

English

Subject:

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY