Polycarbonates with end groups containing bonds which can be crosslinked by UV light

Abstract

The present invention relates to high-molecular weight aromatic polycarbonates, based on diphenols and monofunctional chain stoppers, corresponding to the formula (I) ##STR1## in which Z denotes the radical of a diphenol, n denotes an integer from about 20 to 400, E denotes ##STR2## wherein m denotes 0 or 1 and R denotes H or C.sub.1 -C.sub.3 -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) ##STR3## wherein m denotes 0 or 1 and R denotes H or C.sub.1 -C.sub.3 -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.

Dependencies are inferred from the claim text.