abstract |
The present invention relates to a triarylmethane compound of formula (I), which is suitable as a monomer for preparing a thermoplastic resin having advantageous optical properties and can be used in the manufacture of optical devices: In the above formula, R 1 and R 2 are, for example, hydrogen; Y is an alkylene group having 2, 3 or 4 carbon atoms, Ar is mono- or polycyclic aryl and mono- or polycyclic hetaryl; X 1 , X 2 , X 3 , X 4 are CH, CR x or N, provided that at most two of X 1 , X 2 , X 3 and X 4 in each ring are N; R x is, for example, halogen, CN, or CH=CH 2 . The present invention also relates to a thermoplastic resin comprising polymerized units of the compound of formula (I). |