Use of polyamide moulding compounds for manufacturing optical or electro-optical moulded members
AssigneeEMS-Inventa AG
InventorsHans Dalla Torre, Ralf Hala
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Abstract
The invention relates to the use of polyamide moulding compounds, their alloys or blends, which contain at least one homopolyamide, which has been obtained from long-chained aliphatic monomer blocks with cycloaliphatic monomer blocks, in order to manufacture moulded members for optical or electro-optical applications.
Claims22
A method for manufacturing a transparent optical molded body, with a polyamide molding compound or the compound's alloys or the compound's blends, wherein the compound, the compound's alloys or the compound's blends contains at least one 100% homopolyamide which has been derived from alkyl-substituted cycloaliphatic diamines with 14 to 22 C-atoms without ester or ether groups and unbranched aliphatic dicarboxylic acids with 8 to 14 C-atoms, comprising the step of making the polyamide molding compound.
An optical lens, comprising a polyamide molding compound or the compound's alloys or the compound's blends, the compound, the compound's alloys or the compound's blends containing at least one homopolyamide which has been derived from long-chain aliphatic monomer blocks with cycloaliphatic monomer blocks and the lens having a density of ≦1.1 g/cm3, a refractive coefficient nD20 ≧1.50, and an Abbé coefficient of >40.
Dependencies are inferred from the claim text.