C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 69/00 (2006.01) C08G 69/26 (2006.01) C08G 69/32 (2006.01) D01D 5/06 (2006.01) D01F 6/60 (2006.01) D02J 1/22 (2006.01)
Patent
CA 2088115
HOE 92/F 020 K Abstract Aromatic copolyamides, processes for their preparation and structures formed therefrom Aromatic copolyamides are described which are soluble in organic polyamide solvents and which comprises the recurring structural units of the formula Ia, Ib, Ic and, optionally, Id [ -OC-R1-CO-NH-R2-NH- ] (Ia), Image (Ib), Image (Ic), [ -OC-R1-CO-NH-R3-NH- ] (Id) in which R1 and R2 are mainly unsubstituted divalent aromatic radicals, the valency bonds of which are in the para-position or in a comparable coaxial or parallel position with respect to one another, X is a group of the formula -S-, -SO2-, -CO- OR -O-, Y assumes one of the definitions given for X, and R3 is a radical of the formula II, of the formula III, of the formula IV and/or of the formula V Image Image (II), (III), Image Image (IV), (V), in which Hal is a halogen atom and R4 is C1-C6-alkyl, C1-C6-alkoxy or halogen, and the molar proportions of recurring structural units Ia, Ib, Ic and Id are fixed within selected limits. Shaped structures composed of the copolyamides according to the invention are distinguished by good mechanical properties and in particular fibers can be produced which have exceptionally high tear strengths and knot strengths.
Heinrich Karl
Jung Holger
Klein Peter
Miess Georg-Emerich
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Hoechst Aktiengesellschaft
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