Low sink marks and excellent surface appearance reinforced polyamide compositions
AssigneeE. I. Du Pont de Nemours and Company
InventorGeorgios Topoulos
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Abstract
The invention relates to resin compositions comprising a) at least one amorphous semi-aromatic polyamide; b) at least two semi-crystalline polyamides, b1) and b2) and c) at least one glass reinforcement agent and shaped articles thereof showing a good balance of properties in terms of good mechanical properties, excellent surface appearance and reduced sink marks.
Claims12
A resin composition comprising:
- a) at least one amorphous semi-aromatic polyamide;
- b) at least two semi-crystalline polyamides, b1) and b2);
- and
- c) at least one glass reinforcement agent.
The resin composition according to any preceding claim, wherein b1) is present in an amount from at or about 5 to at or about 20 wt-% and b2) is present in an amount from at or about 5 to 20 wt-% provided that the sum of b1) and b2) is between at or about 10 to at or about 40 wt-%,
- the weight percentages, being based on the total weight of the resin composition.
The resin composition according to any preceding claim, wherein the glass reinforcement agent is fibrous non-circular cross-sectional glass.
The resin composition according to any preceding claim further comprising one or more additional reinforcing agents selected from the group consisting of fibrous reinforcing agents having a circular cross-section;
- and glass flakes.
The resin composition according to any preceding claim further comprising one or more antioxidants.
Dependencies are inferred from the claim text.