Novel copolymers of styrene. 1. Alkyl ring-substituted propyl 2-cyano-3-phenyl-2-propenoates

Synthesis and styrene copolymerization of novel trisubstituted ethylenes: 1. Alkyl ring-substituted octyl phenylcyanoacrylates

“…The conversion of the copolymers was kept between 10 and 20% to minimize compositional drift (Table 1). Nitrogen elemental analysis showed that between 18.6 and 27.4 mol% of OPCA is present in the copolymers prepared at ST/ OPCA = 3 (mol), which is indicative of relatively high reactivity of the OPCA monomers towards ST radical which is typical of alkyl ring-substituted OPCA [18][19][20][21][22][23][24][25][26]. Since OPCA monomers do not homopolymerize, the most likely structure of the copolymers would be isolated OPCA monomer units alternating with short ST sequences (Scheme 2).…”

“…Thus, copolymerization of electrophylic TSE monomers having double bonds substituted with halo, cyano, and carbonyl groups and electron-rich monosubstituted ethylenes such as styrene, N-vinylcarbazole, and vinyl acetate [15][16][17] show a tendency toward the formation of alternating copolymers -thus suggesting a way of functionalization of commercial polymers via introduction of isolated monomer units in copolymers. Earlier we have reported synthesis and styrene copolymerization of a number of alkyl ring-substituted methyl [18,19], ethyl [20,21], propyl [22], isopropyl [23], butyl [24], isobutyl [25], and methoxyethyl [26] PCAs.…”

Synthesis and Styrene Copolymerization of Novel Trisubstituted Ethylenes: 1. Alkyl Ring-Substituted 2-Methoxyethyl Phenylcyanoacrylates

“…The conversion of the copolymers was kept between 10 and 20% to minimize compositional drift (Table 1). Nitrogen elemental analysis showed that between 25.5 and 37.6 mol% of MEPA is present in the copolymers prepared at ST/MEPA = 3 (mol), which is indicative of relatively high reactivity of the MEPA monomers towards ST radical which is typical of alkyl ring-substituted MEPA [18][19][20][21][22][23][24][25][26]. Since MEPA monomers do not homopolymerize, the most likely structure of the copolymers would be isolated MEPA monomer units alternating with short ST sequences (Scheme 2).…”

“…Thus, copolymerization of electrophylic TSE monomers having double bonds substituted with halo, cyano, and carbonyl groups and electron-rich monosubstituted ethylenes such as styrene, N-vinylcarbazole, and vinyl acetate [15][16][17] show a tendency toward the formation of alternating copolymers -thus suggesting a way of functionalization of commercial polymers via introduction of isolated monomer units in copolymers. Earlier we have reported synthesis and styrene copolymerization of a number of alkyl ring-substituted methyl [18,19], ethyl [20,21], propyl [22], isopropyl [23], butyl [24], and isobutyl [25,26] PCAs.…”

Synthesis and styrene copolymerization of novel alkyl ring-substituted t-butyl phenylcyanoacrylates

“…Earlier we have reported synthesis and styrene copolymerization of a number of alkyl ringsubstituted methyl [8,9], ethyl [10,11], propyl [12], isopropyl [13], butyl [14], isobutyl [15], methoxyethyl [16], and octyl [17] phenylcyanoacrylates.…”