Copolyester

Details Copolyester Copolyester

C - Chemistry, Metallurgy

08

G

402/187

C08G 63/60 (2006.01) C08G 63/66 (2006.01) C08G 63/682 (2006.01) C08G 63/688 (2006.01)

Patent

CA 1264497

Abstract of the Disclosure A melt-processable copolyester composed of the following structural units (I), (II) and (III) and/or (IV) as main structural components, wherein unit (I) is represented by the formula Image wherein X1, X2, X3 and X4, independently from each other, represent H, F, Cl, Br, CH3 or C(CH3)3, provided that X1 to X4 do not simul- taneously represent H, and n is 2 or 4, unit (II) is at least one unit selected from the group consisting of Image , Image , and Image , unit (III) is Image , and unit (IV) is Image wherein at least one of the hydrogen atoms in each aromatic ring in units (II), (III) and (IV) may be substituted by an alkyl or alkoxy group having 1 to 4 carbon atoms or a halogen atom. The proportion of unit (I) is 2.5 to 35 mole%, the propor- tion of unit (II) is 2.5 to 35 mole%, and the proportion of unit (III), (IV) or a combination of units (III) and (IV) is 30 to 95 mole%.

515373

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