Organo-dilithium compound and process for preparing the same

Details Organo-dilithium compound and process for preparing the same Organo-dilithium compound and process for preparing the same

2007-10-22

2009-06-23

Witherspoon, Sikarl A (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...

C556S051000, C556S052000, C525S332900

Reexamination Certificate

active

07550537

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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