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Method for Preparing Tapered Block Copolymers

Technology Benefits

Improved elastic behavior Better mixing in polyethylene and other plastics

Technology Application

Thermoplastic elastomers High temperature adhesives Polymer coatings Oxygen barrier films Polymer blend compatibilizers This technology is available for licensing.

Detailed Technology Description

Researchers at the University of California, Santa Barbara have developed a method for preparing olefin-containing tapered block polymers with a copolymer structure. This method comprises polymerizing a first olefin monomer with a second olefin monomer in the presence of a catalyst to produce a tapered block copolymer structure. These polymers have great promise for use in the design of blends of polyethylene and polar engineering plastics because the polarity gradient along their chain will reduce the energy between chains and lead to better mixing.

Supplementary Information

Patent Number: US7754832B2
Application Number: US2005208395A
Inventor: Bazan, Guillermo C. | Diamanti, Steve | Kramer, Edward J. | Khanna, Vikram | Frederickson, Glenn H. | Hotta, Atsushi
Priority Date: 28 Feb 2003
Priority Number: US7754832B2
Application Date: 19 Aug 2005
Publication Date: 13 Jul 2010
IPC Current: C08F000480 | C08F021206 | C08F022010 | C08F029706
US Class: 526117 | 525242 | 526079 | 526118 | 526171 | 526281 | 526308 | 5263285 | 526329 | 526347
Assignee Applicant: The Regents of the University of California
Title: Block copolyolefins possessing a tapered structure
Usefulness: Block copolyolefins possessing a tapered structure
Summary: The method is used for preparing a polymer, which comprises a tapered block copolymer structure, for use in composition selected from thermoplastic elastomer, adhesive, polymer coating, oxygen barrier film and polymer blend compatibilizer (claimed).
Novelty: Preparing a polymer for use in e.g. thermoplastic elastomer, polymer coating and oxygen barrier film, involves polymerizing two different olefin monomers in the presence of a catalyst that supports living or quasi-living polymerization

Industry

Chemical/Material

Sub Group

Chemical/Material Application

Application No.

7754832

Others

Background

Gradient, or tapered, copolymers have a chemical structure with a gradual change of composition along the polymer chain from one monomer unit to another. Tapered block copolymers are superior to traditional block polymers for many applications, but few methods are available for synthesizing such polymers.

Additional Technologies by these Inventors

Tech ID/UC Case

22080/2005-587-0

Related Cases

2005-587-0

Country/Region

USA

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