Reactivity of some substituted styrenes in the presence of a syndiotactic specific polymerization catalyst

Synthesis of 4-tert-butyldimethylsilyloxystyrene and its copolymerization with styrene using (η5-indenyl)trichlorotitanium in the presence of methylaluminoxane

“…The new development of functional monomers and their application in copolymerizations may overcome a limited enduse of the existing polymers even though their synthetic processes are not cost-effective. Metallocene-catalyzed copolymerizations of styrene with substituted styrenes or other monomers have been reported by several research groups 9,[14][15][16][17] . Only the catalytic activity to monomers has been investigated, irrespectively of the applicable efficacy of the products.…”

“…Not only several important factors affecting the production yield but also the degree of conversion of substituted styrenes in relation to the Hammet r value have been well described in the syndiospecific polymerization using the (g 5 -C 5 H 5 )TiCl 3 /MAO catalyst 8) . Specifically, p-methoxystyrene to the tetrabenzyltitanium (Tibz 4 )/MAO catalytic system has been reported to exhibit much higher reactivity compared with styrene and other derivatives 9) . No increase of the reactivity in copolymerization with styrene was observed compared to those of other analogues based on the results observed by means of the evaluation of Fineman and Ross 9,10) .…”

“…Specifically, p-methoxystyrene to the tetrabenzyltitanium (Tibz 4 )/MAO catalytic system has been reported to exhibit much higher reactivity compared with styrene and other derivatives 9) . No increase of the reactivity in copolymerization with styrene was observed compared to those of other analogues based on the results observed by means of the evaluation of Fineman and Ross 9,10) . The physical properties of polymers are usually affected by the compositions or the architectures.…”

Synthesis of amphiphilic diblock copolymers of isotactic polystyrene-block-isotactic poly(p-hydroxystyrene) using a titanium complex with an [OSSO]-type bis(phenolate) ligand and sequential monomer addition

“…49 Consequently, these monomers were generally protected using bulky groups before polymerization. Syndiospecic living coordination polymerization of p-tert-butyldimethylsilyloxy styrene (p-TBDMSOS) has been succeed using transition metal catalysts.…”

Bulk Polymerization of Styrene and 4‐Methylstyrene with Cp*Ti(OBu)3/MAO/TIBA Catalyst

“…3-5 Among them, sub sti tuted styrenes such as methyl-, methoxy-, and chloro-substituted sty rene are ex amples of a con stant re search fo cus in view of their close re semblance to sty rene mono mers. Pre vi ously, poly(sty rene-co-4-methylstyrene)(PS-PMS) had been pro duced with syndiospecific titancene cat a lysts [2][3][4][5] (e.g. η 5 -CpTiCl3, η 5 -Cp*TiCl3, Ti(Bz)4, Ti(OMen)4, where Cp = C5H5, Cp* = C5Me5, Bz = C5H5CH2, Men = L-(-)-menthol) com bined with cocatalyst, methylalumoxane (MAO) in the pres ence of to lu ene as re ac tion sol vent.…”