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Preparation and properties of selectively p‐chlorinated polystyrene

1987; Wiley; Volume: 155; Issue: 1 Linguagem: Inglês

10.1002/apmc.1987.051550116

1522-9505

Jitsuo Kiji, Hisatoshi Konishi, Tamon Okano, Hiroyuki Takada,

Microwave-Assisted Synthesis and Applications

Abstract Polystyrene has been chlorinated in the liquid phase by SbCl 3 catalyst combined with 10‐trifluoroacetylphenothiazine to afford a polymer, which is represented by the formula . The aromatic substitution reaction (x > 1) occurs predominantly at the p‐position, the ratio of p‐ to o‐chlorination being 10‐12. The intrinsic viscosity of the toluene solution at 30°C decreases with content of chlorine, x. The refractive index, n D , increases with x. The n D value of a 25.05% chlorine‐containing polymer (x ≃ 1) is 1.6041.