Claims
- 1. Polyamide molding compositions without impact strength modifier, with good surface quality and good flow behavior, comprising prepolymeric polyamides with a solution viscosity of μrel 1.01-1.30 (measured in 0.5% m-cresol) in quantities from 2-16 wt. % and 1-95 wt. % fillers.
- 2. Polyamide molding compositions according to claim 1, wherein the prepolymeric polyamides are of the same kind as the polyamide molding compositions.
- 3. Polyamide molding compositions according to claim 1, wherein the prepolymeric polyamides are of a different kind than the polyamide molding compositions.
- 4. Polyamide molding compositions according to claim 1, wherein the fillers are inorganic, metallic or polymeric fibers, spheres, laminae, powders or mixtures thereof.
- 5. Polyamide molding compositions according to claim 1, wherein the prepolymeric polyamides are selected from PA 6, PA 66, PA 6I/6T, PA 6T/6I, PA 6T/66, PA 6/6T, PA 6T/61/66, PA 61/66, PA MACMT/6I or mixtures thereof.
- 6. Polyamide molding compositions according to claim 1, wherein the prepolymeric polyamides are selected from PA 12, PA 612, PA 912, PA 1012, PA 1212, PA 610, PA 12/6T, PA 8T, PA 9T, PA 12T, PA N12, PA NI/6T or mixtures thereof.
- 7. Polyamide molding compositions according to claim 1, wherein the prepolymeric polyamides are selected from PA MACM I, PA MACM10, PA MACM12, PA PACM12, PA PACP12, PA MXD6, PA MXDI, PA MACMT, PA 12/MACMI, PA 12/MACMT, PA 12/MACMI, PA NDT, PA NDI, PA IPDI/IPDT, PA TMHMDA, T and PA 12/PACM,T/PACM, I or mixtures thereof.
- 8. Polyamide molding compositions according to claim 1, comprising further additives such as chain regulators, stabilizers, crystallizing agents, softeners, dyes, pigments, antioxidants and the like additives, but no impact strength modifiers or flameproofing agents.
- 9. Method for the preparation of polyamide molding compositions according to claim 1, wherein prepolymeric polyamides of-given viscosities from 0.1 to 20 wt. % of the polyamide matrix are added to the polyamide molding compositions in the melt or by compounding.
- 10. Method according to claim 9, wherein the molding compositions are not subjected to a separate stage of postcondensation.
- 11. A molding selected from the group consisting of: fibers, sheets, pipes, hollow bodies or other half-finished or finished products, formed from the polyamide molding composition according to claim 1.
- 12. A filled-molding formed from the polyamide molding composition according to claim 1.
Priority Claims (1)
Number |
Date |
Country |
Kind |
198 21 719.6 |
May 1998 |
DE |
|
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation-in-part application of application Ser. No. 09/311,037, filed on May 13, 1999. Application Ser. No. 09/311,037 was pending as of the filing date of the present application. Application Ser. No. 09/311,037 is hereby incorporated by reference as if set forth in its entirety herein.
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
09311037 |
May 1999 |
US |
Child |
10307770 |
Dec 2002 |
US |