Patent ID: 9097835
Filing Date: 2015-08-04
Classification: C08G,G02B

Abstract:
1. An optically conductive element in an optical conductor, comprising an optically conductive thermoplastic polyurethane comprising A) a diisocyanate which comprises 1-isocyanato-4-[(4-isocyanatocyclohexyl)methyl] cyclohexane B) a polyol which is polytetrahydrofuran having an average molecular weight from 600 to 2000 C) a isocyanate-reactive chain extender which is 1,4-butanediol, D) an optional catalyst, and E) optional auxiliaries in an amount of at most 0.1% by weight based on the total amount of components A) through E), wherein components B) and C) are the only isocyanate-reactive components, wherein, in the thermoplastic polyurethane, wherein said optically conductive thermoplastic polyurethane is obtained by a one-shot process, in which reaction begins upon mixing components A) through E), the reaction being conducted at a temperature of from 140 to 280° C.