Abstract: Disclosed herein is a polyamide composition, comprising including from 30 wt % to 70 wt % of polyamide mixture and from 30 wt % to 70 wt % of filler mixture, and from 0 to 10 wt % of additives (E), based on the total weight of the polyamide composition. The polyamide composition provides advantage of good flatness and less dust particles, meanwhile the mechanical properties are maintained. Such advantage makes the polyamide composition especially suitable for the optical element application.

Abstract: The invention relates to thermoplastic polyester molding compositions, comprising polybutylene terephthalate (PBT), poly(1,4-cyclohexanedimethanol terephthalate) (PCT) and epoxy-functionalized compatibilizer, a process for preparing the thermo-plastic polyester molding compositions, and to the use of the molding compositions of the invention for producing parisons, containers, films, tubes, or moldings of any type, and also to the resultant moldings of the invention.