abstract |
This invention relates to polyethylene terephtalate compositions comprising a reaction product of a PET resin and 0.05 to 5.0 WT % of a copolymer of maleic anhydride, optionally together with pyromellitic dianhydride. n These compositions have improved melt strengths, which allow to apply them especially for extrusion blow-moulding and foam extrusion. |