Plastic component for a lighting systems

摘要

The invention relates to a plastic component for use in a lighting system, the plastic component comprising a semi-aromatic polyamide (X) comprising repeat units derived from aliphatic diamines and dicarboxylic acids wherein: (a) the aliphatic diamines consist a mixture of 10-70 mole % of a short chain aliphatic diamine with 2-5 C atoms and 30-90 mole % of a long chain aliphatic diamine with at least 6 C atoms; (b) the dicarboxylic acids consist of a mixture of 5-65 mole % aliphatic dicarboxylic acid and optionally aromatic dicarboxylic acid other than terephthalic acid, and 35-95 mole % terephthalic acid; and (c) the combined molar amount of terephthalic acid and the long chain aliphatic diamine is at least 60 mole %, relative to the total molar amount of the dicarboxylic acids and diamines. The invention also relates to a polymer composition that can be used for making the said plastic component comprising 100 pbw of a semi-aromatic polyamide (X) and 1-250 pbw of an inorganic material.

主权项

1. A polymer composition comprising 100 pbw of a semi-aromatic polyamide (X) and 1-250 pbw of an inorganic material, the semi-aromatic polyamide X comprising repeat units derived from (A) dicarboxylic acids and (B) aliphatic diamines, wherein:
(a) the dicarboxylic acids (A) consist of (A1) a mixture of 5-65 mole % aliphatic dicarboxylic acid and optionally aromatic dicarboxylic acid other than terephthalic acid, and (A2) 35-95 mole % terephthalic acid; (b) the aliphatic diamines (B) consist a mixture of (B1) 10-70 mole % of a short chain aliphatic diamine with 2-5 C atoms and (B2) 30-90 mole % of a long chain aliphatic diamine with at least 6 C atoms, wherein 50-100 mole % of the long chain diamine (B2) consists of a diamine having 6 to 9 carbon atoms; and (c) the combined molar amount of the terephthalic acid (A2) and the long chain aliphatic diamine (B2) is at least 60 mole %, relative to the total molar amount of the dicarboxylic acids and diamines.