METHOD OF INCREASING LIGHT FASTNESS OF PAINT COATS AND PROTECTIVE COMPOSITIONS Russian patent published in 2012 - IPC C09D5/32 C09D7/12 C01B33/02 B82B3/00 

FIELD: chemistry.

SUBSTANCE: nanosized silicon with particle size of 5-100 nm is added as a light stabiliser to the recipe of the composition during mixture or synthesis of ingredients thereof. In the surface layer, particles contain silicon dioxide in amount of 0.25-2.5 wt %, having stable spectral absorption of medium-wave UV radiation in the 200-420 nm range. This effect is retained at high temperatures of approximately up to 650 K.

EFFECT: obtaining coatings which do not change colour and operational properties and retain colour- and weather resistance.

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