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Abstract

A transparent polyamide elastomer of the general structure (I), where R₁ is a polyamide segment formed from a) 10-100 mol % of alkyl-substituted bis(aminocyclohexyl)methane or bis(aminocyclohexyl)propane and 0-90 mol % of other cycloaliphatic, aliphatic or aromatic C6-C36 diamines, based on the total amount of diamine in the polyamide segment, and b) aliphatic C4-C36 dicarboxylic acids, cycloaliphatic or aromatic C8-C36 dicarboxylic acids, and c) optionally lactams or aminocarboxylic acids C6-C12, R₂ being selected from the group of the divalent radicals: linear or branched C2-C5 polyoxyalkylene, polyolefin, polysiloxane with a number-average molar mass in the range of 200-3000 g/mol, C2-C36 alkylene, C6-C36 cycloalkylene, C6-C20 aryl, polycaprolactone, polyesters based on aliphatic or cycloaliphatic dicarboxylic acids and diols, aliphatic polycarbonate, and also copolymers of or mixtures of these elements, and X₁ and X₂ independently of one another being amide (CONH) or ester (COO) bonds.

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