Rapidly crystallizing polyester molding materials

Details Rapidly crystallizing polyester molding materials Rapidly crystallizing polyester molding materials

C - Chemistry, Metallurgy

08

L

400/5046, 18/680

C08L 67/00 (2006.01) B29C 45/00 (2006.01) C08K 5/20 (2006.01) C08L 67/02 (2006.01) C08L 69/00 (2006.01)

Patent

CA 2027068

ABSTRACT OF THE DISCLOSURE Thermoplastic molding materials substantially consisting of, in each case, at least one (A) polyalkylene tereph- thalate having a reduced specific viscosity (measured in 1% strength solution in dichloroacetic acid at 25°C) of at least 0.3 dl/g, (B) nucleating agent, (C) crystal- lization accelerator, and (D) if required, reinforcing agents and other conventional additives, in which (C) is at least one N,N'-disubstituted asymmetric oxalic acid bismide. The use of such components (C) leads to only little migration and sublimation where moldings produced from the molding material are heated, so that a satisfactory surface quality results. The nucleating agents and accelerators used in the molding material make it possible to reduce the mold temperature to at least 100 to 100°C.

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