Patent ID: 9187642
Filing Date: 2015-11-17
Classification: C08L

Abstract:
1. A fire-resistant optical element for a vehicle or a building, said optical element consisting of a polymer compound and up to 30 wt. % of at least one additive ingredient, wherein said at least one additive ingredient is selected from the group consisting of fillers, reinforcing materials and materials that provide a special effect; wherein said polymer compound has a spectral transmittance T of at least 85% at a wavelength of 380 nm and at a thickness of 2 mm, said polymer compound transmits light with wavelengths in a range of 380 nm to 750 nm, said polymer compound has a colour rendering index R wherein said polymer compound consists of: a polysulphide with a structural formula (II): a polyether sulphone with a structural formula (IX): a polyaryl ether sulphone with a structural formula (XI): wherein R is a para-phenylene group and n is from 20 to 1000.