초록

The present invention relates to aromatic polyester(carbonate)s with end groups of the formula (Ib) [Figure] (Ib) optionally mixed with known aromatic polyester(carbonate)s, their preparation by the phase boundary process or in homogeneous solution and their modification by irradiation.

대표청구항 ▼

A process for the production of an aromatic polyester having dimethylmaleimide end groups and a weight average molecular weight, determined by light scattering, of between 3,000 and 150,000, from a diphenol, terephthalic acid dichloride, isophthalic acid dichloride and 0.5 to 40 mole %, based on the

A process for the production of an aromatic polyester having dimethylmaleimide end groups and a weight average molecular weight, determined by light scattering, of between 3,000 and 150,000, from a diphenol, terephthalic acid dichloride, isophthalic acid dichloride and 0.5 to 40 mole %, based on the moles of the diphenol of a chain stopper, the ratio between the aromatic acid dichlorides being between 7:3 and 3:7, by the phase boundary process or by the homogeneous solution process, said chain stopper conforming to [Figure] (I) wherein the X－A－radical denotes X－C1-C8-alkyl, X－C5-C6-cycloalkyl, X－C7-C28-aralkyl or a radical of the formula [Figure] (II) wherein n is an integer of from 1 to 8 and X－denotes a group which functions as the reactive part of said chain stopper.