Patent ID: 6907174

Claim:
A light guide including a core of polycarbonate and a coating containing a polymer which contains repeating units derived from the monomers A) one or more different compounds of the formula (I) in which m represents 2, 3 or 4, D represents the m-valent group from an aliphatic or aromatic hydrocarbon, R 1 is hydrogen or methyl, Z 1 , Z 2 and Z 3 , independently, represent oxygen, sulfur, the —N(R) group (in which R is hydrogen or unsubstituted or substituted alkyl, aralkyl or aryl) or a divalent group of the formula (II) in which Z represents oxygen, sulfur or the —N(R) group, and A represents an unsubstituted or substituted divalent group from an aliphatic, cycloaliphatic, araliphatic or aromatic hydrocarbon, Z 4 represents oxygen, the divalent group of the formula (II) or one of the following divalent groups A 1 , A 2 , A 3 and A 4 , independently, represent an unsubstituted or substituted divalent group from an aliphatic, cycloaliphatic, aromatic-aliphatic or aromatic hydrocarbon, n is zero or an integer from 1 to 20, p, q and r, independently, may take on the value zero or 1 and I has a numerical value such that the weight average of the molecular weight of the compound of the formula (I) is 450 to 5000, and B) one or more different compounds of the formula (III) in which R 2 is hydrogen or methyl, A 5 represents an unsubstituted or substituted divalent group from an aliphatic or cycloaliphatic hydrocarbon, Z 5 and Z 6 , independently, represent oxygen, sulfur or the —N(R′) groups, in which R′ is hydrogen or unsubstituted or substituted alkyl, aralkyl or aryl, and R 3 is an unsubstituted or substituted alkyl, cycloalkyl or aralkyl group, wherein the coating contains one or more different stabilisers chosen from the group consisting of organic phosphites and organic sulfides.