Process for the synthesis of functionalized poly (1,3-alkadienes) and use thereof in the preparation of high impact vinyl aromatic polymers
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United States of America Patent
Stats
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May 12, 2015
Grant Date -
Aug 25, 2011
app pub date -
Aug 7, 2009
filing date -
Aug 20, 2008
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Process for the preparation of vinyl aromatic (co) polymers grafted on an elastomer in a controlled manner, comprising: dissolving an elastomer functionalized with bromoalkanes and nitroxy radicals, soluble in non-polar solvents, in a liquid phase consisting of a mixture of vinyl aromatic monomer(s)/polymerization solvent; feeding at least one radical initiator to the mixture, containing the functionalized elastomer in solution, and polymerizing the mixture thus obtained at a temperature higher than or equal to 1200 C; recovering the vinyl aromatic (co) polymer obtained after devolatization; and recycling the solvent/monomer(s) mixture, coming from the devolatization, to step (a).
First Claim
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International Classification(s)
- 2009 Application Filing Year
- C08F Class
- 1584 Applications Filed
- 973 Patents Issued To-Date
- 61.43 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- C08F Class
- 0 % this patent is cited more than
- 10 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 12, 2026 |
