Patent ID: 9567462
Date: 2017-02-14
CPC Classifications: C08K,C08L

Claim:
1. Reinforced polyamide molding materials with high notch impact strength, comprising low viscous polyamides and flat glass fibers as a reinforcing medium, consisting of: a polyamide matrix, consisting of the following components: (A) 0 to 60 wt.-% of an aliphatic, partly crystalline polyamide, consisting of polyamide 66, with a solution viscosity η (B) 0 to 60 wt.-% of at least one amorphous or microcrystalline polyamide selected from the group consisting of: polyamide 6I/6T, polyamide MACM9-18, polyamide MACMI/12, or a mixture thereof, with a solution viscosity η wherein the components (A) and (B) fulfil the condition: and that, in the case of a mixture of components (A) and (B), at least 50 weight parts aliphatic blocks (A) are present in the mixture, and a filler component, consisting of: (C) 40 to 80 wt.-% flat glass fibers with elongated shape, and the glass fibers have a non-circular cross-sectional area and a size ratio of the main cross-sectional axis to the secondary cross-sectional axis of between 2 to 5, and (D) 0 to 40 wt.-% particle like or layer like fillers, with the proviso that carbon fibers are excluded, wherein the polyamide molding materials optionally comprise up to 5 wt.-% of further usual additives and auxiliary agents (E), and wherein the weight of the components (A) to (E) sums up to 100%.