Ｍｅｔｈｏｄ ｏｆ ｒｕｂｂｅｒｙ ｐｏｌｙｍｅｒ ａｎｄ ｒｕｂｂｅｒ ｒｅｉｎｆｏｒｃｅｄ ｔｈｅｒｍｏｐｌａｓｔｉｃｓ ｕｓｉｎｇ ｔｈｅ ｓａｍｅ

摘要

Disclosed is a method of manufacturing a rubbery polymer having an excellent impact resistance and heat stability, and a rubber reinforced thermoplastic resin composition using the same, in which for the method of manufacturing the rubbery polymer having an average particle diameter of 2500 to 4000 Å, a gel content of 70 to 90 %, and a glass transition temperature up to 0 °C, 5 to 70 parts by weight of monomers are injected in one time and 30 to 95 parts by weight of the monomers are added by continuous injection, based on 100 parts by weight of total monomer that is injected for manufacturing the rubbery polymer. Therefore, using the method of the present invention easily performs the control of the particle diameter and the distribution the heat of polymerization. In addition, the polymerization productivity and the production stability of the rubbery resin can be improved and also the impact resistance and the processing heat stability of the rubber reinforced thermoplastic resin composition using the same can be largely improved.