Patent ID: 7368489

Claim:
A UV additive for amino resins comprising a water soluble, sterically hindered nitroxyl compound soluble in an aqueous aminoplastic precondensate and a UV absorber soluble in an aqueous aminoplastic precondensate, wherein the UV absorber comprises ortho-hydroxyphenylbenzotriazoles according to formula I wherein R1: is alkyl moieties of length C 1 -C 12 , or aryl moieties, R2: is SO 3 − (in the form of Na salt, Ca salt or magnesium salt), sulfonate, sulfate, CH 2 COO − (carboxylate), CH 2 —NH 3 + Cl − (ammonium), (CH 2 —CH 2 —O—) x H (ethylene oxide), propylene oxide, CH 2 —(O—CH 2 —CH 2 —) x —OH ((poly)ethylene glycol), ethylene oxide-propylene oxide copolymers, CH 2 —(CH 2 —CHOH—) x —OH polyvinyl alcohols, or CH 2 —COO − Na + .