Attenuation of polymer substrate degradation due to ultraviolet

Details Attenuation of polymer substrate degradation due to ultraviolet Attenuation of polymer substrate degradation due to ultraviolet

1992-09-09

1994-10-04

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524497, 252507, 252511, 252512, C08K 318, C08K 322, H01B 106, H01B 102

Patent

active

053527259

ABSTRACT:
Improved methods and polymer compositions are provided whereby ultraviolet radiation degradation of substrates formed of the compositions is attenuated. In accordance with the invention, ultraviolet scattering and absorbing particles having a particle size in the range of from about 0.001 micrometer to about 0.20 micrometer in diameter are dispersed in at least a surface layer of a polymer substrate.

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