VINYL ETHER-BASED STAR POLYMER AND PROCESS FOR PRODUCTION THEREOF
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Jul 5, 2012
app pub date -
Jul 1, 2010
filing date -
Aug 14, 2009
priority date (Note) -
Abandoned
status (Latency Note)
Importance
|
US Family Size
|
Non-US Coverage
|
Abstract
Provided is a vinyl ether-based star polymer that has arms containing a copolymer of a vinyl ether-based polymer and a oxystyrene-based polymer, and a process for production of the star polymer that is capable of being carried out continuously in a series of steps. The process includes a vinyl ether-based star polymer having arms containing a copolymer of a vinyl ether-based polymer and an oxystyrene-based polymer, and a process for production of the vinyl ether-based star polymer, containing: subjecting a vinyl ether-based monomer to living cationic polymerization in the presence of an initiating species, a Lewis acid that is suitable for cationic polymerization of the vinyl ether-based monomer, and a solvent; then subjecting an oxystyrene-based monomer to living cationic polymerization with a Lewis acid that is suitable for cationic polymerization of the oxystyrene-based monomer added thereto; adding a divinyl compound to introduce a vinyl group to a side chain; and forming a core through intermolecular crosslinking with the vinyl group.
First Claim
Other Claims data not available
Family
| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| JP | B2 | JP5844640 | Jul 01, 2010 |
| WO | A1 | WO2011018924 | Jul 01, 2010 |
| KR | A | KR20120066016 | Jul 01, 2010 |
| EP | A1 | EP2465885 | Jul 01, 2010 |
| TW | A | TW201127857 | Jul 20, 2010 |
International Classification(s)
- 2010 Application Filing Year
- C08F Class
- 1581 Applications Filed
- 1071 Patents Issued To-Date
- 67.75 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 2 Citation Count
- C08F Class
- 9.58 % this patent is cited more than
- 13 Age