POLYCARBONATES WITH DOUBLE BONDS CONTAINING END GROUPS, CURABLE BY ULTRAVIOLET LIGHT, THEIR MANUFACTURE AND THEIR MODIFICATION

摘要

The present invention relates to high-molecular weight aromatic polycarbonates, based on diphenols and monofunctional chain stoppers, corresponding to the formula (I) (I) in which Z denotes the radical of a diphenol, n denotes an integer from about 20 to 400, E denotes wherein m denotes 0 or 1 and R denotes H or C1-C3-alkyl. The present invention also relates to a process for the preparation of the polycarbonates of the formula (I) comprising reacting diphenols of the formula (II) HO-Z-OH (II) wherein Z is a divalent aromatic radical, and/or their chlorocarbonic acid esters in accordance with the processes which are known for the preparation of polycarbonates, in a homogeneous or heterogeneous phase system, with compounds of the formula (III) (III) wherein m denotes 0 or 1 and R denotes H or C1-C3-alkyl. The present invention also relates to a process for cross-linking the polycarbonates of the formula (I) with UV light, after adding a photoinitiator and, optionally, flameproofing and photo-reducing agents. Finally, the present invention relates to the cross-linked polycarbonates obtained via this process.