Method for preparing imide substituted copolymer resin
A technology of imide and copolymer, applied in the field of preparing imide-substituted copolymer resin, can solve the problems of uneconomical, long polymerization time, complicated multi-step polymerization, etc., and achieve the effect of excellent thermal stability
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Embodiment 1
[0060] Styrene raw material mixture solution (based on weight, styrene / acrylonitrile=87.5 / 12.5) and maleic anhydride raw material mixture solution (based on weight, maleic anhydride / cyclohexanone=21.4 / 78.6) were added at 3.64kg / A flow rate of hr and 6.36 kg / hr was fed simultaneously into the first reactor (copolymerization reactor) having an internal volume of 42 L. Polymerization was carried out at 120°C, while simultaneously adding 250 ppm of 1,1-bis(tert-butyl peroxide)- 3,3,5-Trimethylcyclohexane as initiator and 250 ppm of α-methylstyrene dimer as chain transfer agent.
[0061] The polymerization solution discharged from the first reactor was charged into a second reactor (imide substitution reactor) having an internal volume of 32 L. The imide substitution was carried out at 150°C while aniline was fed continuously at a flow rate of 1.30 kg / hr.
[0062] The product was poured into a devolatilizer maintained at a temperature of 250°C and a pressure of 20 Torr. Volatil...
Embodiment 2
[0065] Styrene raw material mixture solution (based on weight, styrene / acrylonitrile=88.2 / 11.8) and maleic anhydride raw material mixture solution (based on weight, maleic anhydride / cyclohexanone=18.5 / 81.5) were added at 3.86kg / A flow rate of hr and 6.14 kg / hr was fed simultaneously into the first reactor (copolymerization reactor) having an internal volume of 42 L. The polymerization was carried out at 120°C, based on the total weight of the styrene raw material mixture solution and the maleic anhydride raw material mixture solution, while continuously adding 250 ppm of 1,1-bis(tert-butyl peroxide)-3 to the first reactor , 3,5-trimethylcyclohexane as the initiator and 250 ppm of α-methylstyrene dimer as the chain transfer agent.
[0066] The polymerization solution discharged from the first reactor was charged into a second reactor (imide substitution reactor) having an internal volume of 32 L. The imide substitution was carried out at 150°C while aniline was fed continuous...
Embodiment 3
[0070] Styrene raw material mixture solution (based on weight, styrene / acrylonitrile=86.7 / 13.3) and maleic anhydride raw material mixture solution (based on weight, maleic anhydride / cyclohexanone=24.1 / 75.9) were added at 3.41kg / A flow rate of hr and 6.59 kg / hr was fed simultaneously into the first reactor (copolymerization reactor) having an internal volume of 42 L. The polymerization was carried out at 120°C, based on the total weight of the styrene raw material mixture solution and the maleic anhydride raw material mixture solution, while continuously adding 250 ppm of 1,1-bis(tert-butyl peroxide)-3 to the first reactor , 3,5-trimethylcyclohexane as the initiator and 250 ppm of α-methylstyrene dimer as the chain transfer agent.
[0071] The polymerization solution discharged from the first reactor was charged into a second reactor (imide substitution reactor) having an internal volume of 32 L. The imide substitution was carried out at 150°C while aniline was fed continuous...
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