Wholly aromatic mesomorphic polyester imides, the...

Details Wholly aromatic mesomorphic polyester imides, the... Wholly aromatic mesomorphic polyester imides, the...

C - Chemistry, Metallurgy

08

G

402/184

C08G 73/16 (2006.01) C08J 5/18 (2006.01) C09K 19/38 (2006.01)

Patent

CA 1268588

ABSTRACT OF THE DISCLOSURE: Wholly aromatic mesomorphic polyester imides which form a liquid-crystalline fiber-forming melt below 320°C and are composed of: a) from 5 to 35 mole % of repeat units of the formulae (I) and/or (II): (I) Image (II) where x can be identical or different and each is -O-, -S-, -SO2, -CO-, -CH2- or = C(CH3)2, and n is 1 or 2, b) from 0 to 30 mole % of repeat units of the formulae (III) and/or (IV): Image (III) Image (IV) c) a molar amount corresponding to the total amount of components a) and b) of c1) from 3 to 35 mole % of units of the formula (V): Image (V) and one or more of the repeat units of formula (VI), (VII) and (VIII) in the following molar amount: c2) from 2 to 25 mole % of units of the formula (VI): Image (VI) c3) from 0 to 25% of units of the formula (VII): Image (VII) c4) from 2 to 25 mole % of units of the formula (VIII): (VIII) Image the total of the molar proportions of components c1), c2), c3) and c4) corresponding in each case to the total in mole % of components a) and b), d) if desired from 5 to 25 mole % of repeat units of the formula (IX): Image (IX) e) repeat units of the formula (X): Image (X) the molar proportions of a), b), c), d) and e) in each case adding up to 100 mole %, the preparation thereof and fibers, films and molding prepared therefrom.

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