Patent ID: 7053068

Claim:
A composition comprising a polymeric compound comprising the following substructure within its overall structure: wherein X=—CR 1 R 2 —CR 1 R 2 —CR 1 R 2 —CR 1 R 2 —CR 1 R 2 —CR 1 R 2 —, —CR 1 R 2 —CR 1 R 2 —CR 1 R 2 —CR 1 R 2 —CR 1 R 2 —, —CR 1 R 2 —CR 1 R 2 —CR 1 R 2 —CR 1 R 2 —, —CR 1 R 2 —CR 1 R 2 —CR 1 R 2 —, —CR 1 R 2 —CR 1 R 2 — or —CR 1 R 2 —, wherein R 1 and R 2 are each or together a substituent selected from hydrogen, —OH, —SH, —O—CH 3 ; —O—CH 2 —CH 3 , —O—CH(CH 3 ) 2 , —O—CH 2 —CH 2 —CH 3 , —OOC—CH 3 , —OOC—CH 2 —CH 3 , —OOC—CH 2 —CH 2 —CH 3 , ═O, —Cl, —Br, —I, alkyl, aryl or O-aryl.