Patent ID: 6362284
Filing Date: 2002-03-26
Classification: C08C,C08F

Abstract:
A heterotelechelic polymer comprising the structure:Hmâ€”Tâ€”Zâ€”Qnâ€”Câ€”Yâ€”Wâ€”(Bâ€”R4R5R6)k or(R1R2R3â€”A)mâ€”Tâ€”Zâ€”Qnâ€”Câ€”Yâ€”Wâ€”(H)k wherein:C is a hydrogenated or unsaturated block derived by anionic polymerization of at least one monomer selected from the group consisting of conjugated dienes, alkenylsubstituted aromatic hydrocarbons, and mixtures thereof; Y and Z are independently branched or straight chain hydrocarbon connecting groups which contains 3-25 carbon atoms optionally substituted with aryl or substituted aryl containing lower alkyl, lower alkylthio, or lower dialkylamino groups; Q is an unsaturated or hydrogenated hydrocarbyl group derived by incorporation of at least one compound selected from the group consisting of conjugated diene hydrocarbons, alkenylsubstituted aromatic hydrocarbons, and mixtures thereof; T and W are independently selected from oxygen, sulfur, and nitrogen; (Aâ€”R1R2R3)m and (Bâ€”R4R5R6)k are protecting groups in which A and B are independently selected from C, Ge, Sn, and Pb; R1, R2, R3, R4, R5 and R6 are independently defined as hydrogen, alkyl, substituted alkyl groups containing lower alkyl, lower alkylthio, and lower dialkylamino groups, aryl or substituted aryl groups containing lower alkyl, lower alkylthio, lower dialkylamino groups, or cycloalkyl and substituted cycloalkyl groups containing 5 to 12 carbon atoms; and k and m are 1 when T or W is oxygen or sulfur, and 2 when T or W is nitrogen; and n is an integer from 0 to 5.