Patent ID: 8722778

Claim:
A composition comprising: (a) 100,000 parts by weight of a primer composition comprising a binder material (a1), a primer solvent (a2) and a UV absorber (a3), wherein the primer composition is suitable as an adhesion-promoting agent between a thermoplastic substrate and a siloxane-based top coat; (b) 0 to 900,000 parts by weight of a solvent, and (c) 1 to 3000 parts by weight of a compound according to the general formula (I): wherein X represents a moiety selected from the group consisting —OR 6 , —OCH 2 CH 2 OR 6 , —OCH 2 CH(OH)CH 2 OR 6 and —OCH(R 7 )COOR 8 , wherein R 6 represents a branched or unbranched C 1 -C 13 alkyl, C 2 -C 20 alkenyl, C 6 -C 12 aryl or —CO—C 1 -C 18 alkyl, R 7 represents H or a branched or unbranched C 1 -C 8 alkyl, and R 8 represents a C 1 -C 12 alkyl, a C 2 -C 12 alkenyl or a C 5 -C 6 cycloalkyl, and wherein the composition has a viscosity of 40 s to 140 s measured in accordance with DIN EN ISO 2431 at 23° C. and with a 2 mm cup; wherein the UV absorber (a3) comprises dibenzoyl resorcinol.