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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 25, Number 11
BKCSDE 25(11)
November 20, 2004 

 
Title
Syndiotactic Polymerization of Amino-functionalized Styrenes Using (Pentamethylcyclopentadienyl)titanatrane/MMAO Catalyst System
Author
Youngjo Kim, Sungjin Park, Yonggyu Han, Youngkyu Do*
Keywords
Polystyrene, Poly(4-dimethylaminostyrene), Poly(4-diethylaminostyrene), Metallocene catalyst, Syndiospecific polymerization
Abstract
A set of unprecedented syndiospecific dimethyl- and diethylamino-functionalized polystyrenes was prepared by catalytically polymerizing the corresponding monomers using (pentamethylcyclopentadienyl)titanatrane/MMAO catalytic system. Dialkylamino-functionalized styrene monomers were synthesized by Wittig reaction from the corresponding aldehyde in high yield. The resulting polymers are soluble in polar organic solvents such as THF and show good thermal stability. The chemical transformation of the syndiospecific poly(4-diethylaminostyrene) also gave new polar polymers, namely syndiotactic poly(4-diethylaminostyrene hydrochloride), which is unattainable by traditional synthetic methods.
Page
1648 - 1652
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