Patent ID: 6492478
Filing Date: 2002-12-10
Classification: C08F,C08G,C08L,G02B

Abstract:
A prepolymer which is a linear polyester having pendent crosslinkable groups of the formula â€”CH2â€”R and comprising structural units of the formula Z is straight-chained or branched C1-C12alkylene or unsubstituted or C1-C4alkyl- or C1-C4alkoxy-substituted phenylene or C7-C12aralkylene, x and t are each independently of the other the number 0 or 1, R5 is hydrogen, C1-C4alkyl or halogen, R6 is hydrogen, C1-C4alkyl, phenyl, carboxy or halogen, R7 is hydrogen when R6 is phenyl or carboxy, or is hydrogen or carboxy when R6 is hydrogen, C1-C4alkyl or halogen, R8 is a C2-C12alkylene radical, a phenylene radical or a C7-C12aralkylene radical, R9 and R9â€² are each independently of the other hydrogen, C1-C4alkyl or halogen, R1 is a radical of the formula â€”[CH2â€”CHRâ€³â€”O]nâ€”CH2â€”CHRâ€³â€”â€ƒâ€ƒ(3a) or â€”[CH2â€”CH2â€”CH2â€”CH2â€”O]nâ€”CH2â€”CH2â€”CH2â€”CH2â€ƒâ€ƒ(3b); â€ƒor an alkylene radical having up to 20 carbon atoms which may be interrupted by one or more ester, urethane or ureido groups and/or may be substituted by hydroxy; or a cycloalkylene radical having from 6 to 20 carbon atoms; or an arylene radical having from 6 to 20 carbon atoms; or an arylenealkylene, alkylenearylene, alkylenearylenealkylene or arylenealkylenearylene radical, R2 is a radical of the formula â€”CH2[CH2â€”CHR*â€”O]pâ€”CH2â€”â€ƒâ€ƒ(4) or R3â€”C(O)â€”[Oâ€”CHR*â€”CH2]pâ€”Oâ€”(O)Câ€”R3â€”â€ƒâ€ƒ(5); â€ƒor an alkylene radical having up to 20 carbon atoms which may be interrupted by one or more ester, urethane or ureido groups and/or may be substituted by hydroxy; or a cycloalkylene radical having from 6 to 20 carbon atoms; or an arylene radical having from 6 to 20 carbon atoms; or an arylenealkylene, alkylenearylene, alkylenearylenealkylene or arylenealkylenearylene radical, Râ€², Râ€³ and R* are each independently of the others hydrogen or C1-C4alkyl, R3 is an alkylene radical having up to 20 carbon atoms; or a cycloalkylene radical having from 6 to 20 carbon atoms; or an arylene radical having from 6 to 20 carbon atoms, and n, m, p and q are each independently of the others a number from 1 to 30, with the proviso that at least one of the radicals R1 and R2 is a radical of formula (3a), (3b), (4) or (5).