| 摘要 |
Disclosed herein are an aromatic thioether ketone/thioether sulfone random copolymer comprising phenylene thioether ketone recurring units (I) and phenylene thioether sulfone recurring units (II), (a) the compositional ratio (I:II) of the recurring units (I) to the recurring units (II) ranging from 98:2 to 65:35, (b) the solution viscosity ( eta inh) being at least 0.3 dl/g, (c) the melt crystallization time (f) being at least 3 minutes, (d) the melting point (Tm) being 300 DEG -350 DEG C., (e) the glass transition temperature being at least 125 DEG C., (f) the retention (400 DEG C./20 min) of melt crystallization enthalpy ( DELTA Hmc) being at least 60%, and (g) the average particle size being at least 0.1 mm, and the production process thereof.
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