A kind of graft copolymer containing reactive group and its preparation method and application
A technology of reactive groups and graft copolymers, which is applied in the synthesis and application of graft copolymers, can solve the problems of low mechanical strength and achieve the effect of improving strength
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Embodiment 1
[0057] Under the protection of nitrogen, mix and stir 75g styrene, 25g methyl methacrylate, 1.5g chain transfer agent mercaptopropanol, 4.0g initiator azobisisobutyronitrile and 200g solvent toluene, and then move to the , a condenser and a thermometer in a four-neck flask, heated to 65°C, and reacted for 6 hours to obtain a toluene solution containing polymer D; the reaction system was lowered to room temperature, and 0.01g of inhibitor hydroquinone, 0.04 g catalyst N,N-dimethylbenzylamine and 2.1g carbon-carbon double bond-containing monomer E methacryloyl chloride (the molar ratio of polymer D to carbon-carbon double bond-containing monomer E is 1:1.2) , after stirring and reacting at room temperature for 8 hours, the product was rotary evaporated and dried to obtain a polymer C containing carbon-carbon double bonds. The number average molecular weight of the obtained polymer C was about 5340 through GPC testing.
[0058] Under nitrogen protection, 90g styrene, 30g methyl m...
Embodiment 2
[0060] Under the protection of nitrogen, mix and stir 100g styrene, 25g methyl acrylate, 1.8g chain transfer agent mercaptopropanol, 2.7g initiator azobisisobutyronitrile and 200g solvent toluene, and then move to a place equipped with a stirring paddle, condensing In a four-necked flask with a thermostat and a thermometer, heat to 65°C, and after 6 hours of reaction, a toluene solution containing polymer D is obtained; the reaction system is lowered to room temperature, and 0.01g of polymerization inhibitor diphenylamine vulcanization and 0.02g of catalyst three are added. Ethylamine and 1.84g of carbon-carbon double bond-containing monomer E methacryloyl chloride (the molar ratio of polymer D to carbon-carbon double bond-containing monomer E is 1:0.9), stirred at room temperature for 8 hours, and the product After rotary evaporation and drying, a high molecular weight polymer C containing carbon-carbon double bonds was obtained, and the number average molecular weight of the ...
Embodiment 3
[0063] Under the protection of nitrogen, 70g α-methylstyrene, 50g butyl acrylate, 1.5g chain transfer agent mercaptopropanol, 3.5g initiator azobisisobutyronitrile and 240g solvent xylene were mixed and stirred evenly, and then moved to the In a four-neck flask with a stirring paddle, a condenser and a thermometer, heat to 65°C and react for 6 hours to obtain a xylene solution containing polymer D; lower the reaction system to room temperature, and add 0.01g of inhibitor nitrous Benzene, 0.02g catalyst N,N-dimethylcyclohexylamine and 1.36g carbon-carbon double bond-containing monomer E methacryloyl chloride (the molar ratio of polymer D to carbon-carbon double bond-containing monomer E 1:0.8), stirred and reacted at room temperature for 5 hours, and dried the product by rotary evaporation to obtain a polymer C containing carbon-carbon double bonds. According to the GPC test, it can be seen that the number average molecular weight of the obtained polymer C is about 6110.
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