Styrenics Resin (GPPS, HIPS, SAN, ABS)


TOYO and Mitsui Chemicals, Inc. (MITSUI) have been jointly promoting the R&D and the licensing of TOYO-MITSUI PS PROCESS based on the continuous bulk polymerization technology. TOYO-MITSUI PS PROCESS covers all of styrenics resins, i.e., 1) General Purpose Polystyrene (GPPS), an amorphous, colorless polymer of styrene as sole monomer, 2) High Impact Polystyrene (HIPS), a graft polymer in which synthetic rubber is chemically bonded to GPPS resulting in having impact strength, 3) Styrene Acrylonitrile copolymer (SAN), a copolymer of styrene and acrylonitrile resulting in having chemical resistance, and 4) Acrylonitrile Butadiene Styrene Resin (ABS) that has both impact strength derived from poly-butadiene rubber and chemical resistance derived from acrylonitrile.

GPPS: General Purpose Polystyrene
HIPS: High Impact Polystyrene
SAN: Styrene Acrylonitrile Copolyme
ABS: Acrylonitrile Butadiene Styrene Resin

60,000 t/y SAN Plant, Zhenjiang GPPC Chemical Corp.(Presently Zhenjiang Chimei Chemical Co., Ltd.) 50,000 t/y GPPS Plant, PJSC

*Sorry we can’t supply and sell the polystyrene and related resin since we are not resin producer.


TOYO-MITSUI PS PROCESS, a continuous bulk polymerization process having specially designed reactor and devolatilizer using thermal initiation polymerization and precise control of the degree of polymerization as basic technologies, has the following feature.

  • Simple process scheme and compact plant layout.
  • Simple and easy operation with less grade change time化
  • Environmental friendly
  • Less wastes
  • Stable operation and appropriate countermeasures for emergency
  • Low raw materials/utilities consumption

Especially the ABS process is an environment-friendly process compared with the competent technology in terms of negligible amount of acrylonitrile in the waste water.

Transparent Styrenics Process Scheme (GPPS or SAN)

Rubber Based Styrenics Process Scheme (HIPS or ABS)

Product Properties and Applications

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