English to Romanian Tech/Engineering Chemistry; Chem Sci/Eng

Tot despre polimeri. Nu am reuşit să descopăr dacă există un termen consacrat.

Exemple:
The use of a cobalt catalyst is used to mask the yellowness.
The increase in yellowness (b*) and haze with the addition of the polyamide can obviously be hidden by the addition of an opacifying agent.

Mulţumesc.