Patent ID: 6864325

Claim:
A compound of the formula: A—{[ p —(X—Y) q ][B′ p′ —(X′—Y′) q′ ]Z} r (I), wherein a) one of q and q′ represents zero, one or a numeral greater than one and the other one represents one or a numeral greater than one; A and Z represent chain terminal groups from the chain transfer agent A(—Z) r ; r represents a numeral from one to four; B and B′ independently of one another represent unsaturated or hydrogenated repeating units from cycloolefins polymerised by metathesis; X and X′ represent identical or different bivalent groups; Y and Y′ represent identical or different UV-light absorber moieties selected from the group consisting of 2-(2′-hydroxyphenyl)benzotriazoles, 2-hydroxybenzophenones, benzoic acid esters, oxanilides and 2-(2-hydroxyphenyl)-1,3,5-triazines; and one of p and p′ represents zero, one or a numeral greater than one and the other one represents one or a numeral greater than one; or wherein b) q and q′ represent zero; A and Z represent chain terminal groups from the chain transfer agent A(—Z) r , wherein A represents the chain terminal group Y″—X″—, wherein Y″ represents a UV-light absorber moiety selected from the group consisting of 2-(2′-hydroxyphenyl)benzotriazoles, 2-hydroxybenzophenones, benzoic acid esters, oxanilides and 2-(2-hydroxyphenyl)-1,3,5-triazines; and X′ represents a bivalent group; and B, B′, p, p′ and r are as defined above.