Method for recovering phenylethylene monomer from impact resilience polystyrene

Application Number: 00108078
Application Date: 2000.06.12
Publication Number: 1316408
Publication Date: 2001.10.10
Priority Information: 2000/4/6 JP 2000-105519
International: C07C4/22;C07C15/46
Applicant(s) Name: Taiyo Development Co., Ltd.
Inventor(s) Name: Sato Takuki;Masunari Teruo
Patent Agency Code: 72003
Patent Agent: yang shuyuan
Abstract To provide a method for recovering styrene monomer from impact- resistant polystyrene, in which the industrially useful styrene monomer can be recovered in a high yield and in a high purity from the impact-resistant polystyrene wastes whose effective recycling method has not been established. SOLUTION: This method for recovering the styrene monomer from the impact-resistant polystyrene is characterized by its thermal decomposition, use of a metal sulfate and/or manganese dioxide as a catalyst.