English to Romanian Tech/Engineering Materials (Plastics, Ceramics, etc.)

https://www.dulux.com.au/applicator/technical-advice/perform...
„What is chalking?
“Chalking” is defined in AS/NZS 2310:2002 “Glossary of paint and painting terms” as... “The appearance of a loosely adherent fine powder on the surface of a paint film, arising from the degradation of one or more of its constituents”.

If the coating itself is breaking down due to ultra violet (UV) degradation, there will be some evidence of a white or coloured powdery “chalking” residue on the wipe-cloth. Some chalking is to be expected as all paints will be affected by UV radiation to some degree, over time.

The rate of this degradation will vary depending on the topcoat colour, environmental conditions and the type of paint used (ie. the particular resin system used in a given paint product).”