| 摘要 |
<p>Redistributing an organic polycarbonate compsn. comprises contacting, at about 180-230[deg]C, an initial linear or branched organic polycarbonate compsn. characterised by an initial wt. average molecular wt. of about 500-200,000, as measured by GPC relative to polystyrene, with about 15-1000 moles, per million moles of carbonate structural units in the initial polycarbonate compsn., of a tetraorganophosphonium hydroxide, whereby a redistributed polycarbonate compsn. is formed having a wt. average molecular wt. which is different from the initial molecular wt.</p> |
