N-acryloyl-N′-phenyl-piperazine (AcrNPP) has been synthesized by condensation of acryloylchloride with N-phenylpiperazine. In the presence of 0.5–1% AIBN, in 1:1 toluene solution, at 60–70°C in 24–48 h it gave homopolymers in substantial yields, with [η] = 0.16–0.24 dl g−1 (chloroform). With methylmethacrylate (MMA) or styrene as comonomer, at 60°C in 24 h copolymers were also obtained in good yields. With benzoyl peroxide, fast copolymerizations could be performed at 40°C, since AcrNPP also acted as redox initiation promoter. Reactivity ratios with methylmethacrylate were estimated: r1 = 0.25 (AcrNPP); r2 = 2.5 (MMA). Linear correlations between composition and absorbance ratios of infrared bands of the copolymers were also established
Polymers and copolymers of N-acryloyl-N-phenyl-piperazine
DANUSSO, FERDINANDO;TANZI, MARIA CRISTINA;LEVI, MARINELLA;
1990-01-01
Abstract
N-acryloyl-N′-phenyl-piperazine (AcrNPP) has been synthesized by condensation of acryloylchloride with N-phenylpiperazine. In the presence of 0.5–1% AIBN, in 1:1 toluene solution, at 60–70°C in 24–48 h it gave homopolymers in substantial yields, with [η] = 0.16–0.24 dl g−1 (chloroform). With methylmethacrylate (MMA) or styrene as comonomer, at 60°C in 24 h copolymers were also obtained in good yields. With benzoyl peroxide, fast copolymerizations could be performed at 40°C, since AcrNPP also acted as redox initiation promoter. Reactivity ratios with methylmethacrylate were estimated: r1 = 0.25 (AcrNPP); r2 = 2.5 (MMA). Linear correlations between composition and absorbance ratios of infrared bands of the copolymers were also establishedI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
