Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2007-10-23
2007-10-23
Page, Thurman K. (Department: 1621)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
active
10947011
ABSTRACT:
Disclosed is an anionic diinitiator prepared using a diisopropenyl benzene compound and an organo lithium compound having primary polymerization sites. The anionic diinitiators are prepared by admixing a diisopropenyl benzene compound with diethyl ether, ethylene, an organo lithium compound, and a solvent under reaction conditions sufficient to prepare a diinitiator having primary lithium alkyl reactive sites. The diinitiators are particularly useful in preparing block copolymers.
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Atwood Harvey E.
Cocchiara Joy P.
Goodwin Daniel E.
Haddix Grant W.
Stevens Craig A.
Holguin Donna Blalock
Kraton Polymers U.S. LLC
Page Thurman K.
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