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|1. (WO2018084417) HIGHLY HEAT-RESISTANT STYRENE-ACRYLONITRILE RESIN AND PREPARATION METHOD THEREFOR|
|Applicants:||LG CHEM, LTD.
|Inventors:||SEO, Jae Bum
LEE, Dae Woo
PARK, Jung Tae
KIM, Gyu Sun
HAN, Chang Hun
|Title:||HIGHLY HEAT-RESISTANT STYRENE-ACRYLONITRILE RESIN AND PREPARATION METHOD THEREFOR|
The present invention provides: a SAN resin capable of greatly improving heat resistance while maintaining productivity, processability, and moldability by significantly reducing the amount of an oligomer by preparing and storing a mixture solution of an N-substituted maleimide monomer and an unsaturated nitrile monomer at a specific temperature, separately injecting the mixture solution and a styrene-based monomer into polymerization reactors, and maintaining the temperature of a first polymerization reactor and a second polymerization reactor at a specific temperature; and a preparation method therefor.