Polypyrrole/polyimide compositions

Claim 2

A composition which comprises (a) a polypyrrole, and (b) a polyimide which is soluble in organic solvents and which contains recurring units of formula I ##STR55## wherein the four carbonyl groups are attached direct to separate carbon atoms, which carbonyl groups are ortho or peri to one another so that 5- or 6-membered imide rings are formed, and Z is a tetravalent organic radical which contains at least one aromatic ring, and Z' is a divalent aliphatic, cycloaliphatic, aromatic, araliphatic or heterocyclic radical, or Z, Z' or both Z and Z' denote combinations of said radicals within the given definition.

Claim 3

A composition according to claim 1, wherein the polypyrrole is derived from pyrroles of formula X ##STR56## wherein R 16 is hydrogen, alkyl, cycloalkyl, aryl, aralkyl or alkaryl, which organic radicals may be substituted by --COR 20 , --COOR 20 , --SO 2 R 20 , --SO 3 R 20 , --PO 3 R 20 R 21 , --PO 2 R 20 , --NR 20 R 21 , OR 20 , --SR 20 , --CN or --SiR 22 R 23 R 24 , or wherein R 16 is also --CN, --SO 2 R 20 , --SO 3 R 20 , --COR 20 , --PO 2 R 20 or --SiR 3 22 , each of R 20 and R 21 independently of the other is hydrogen, alkyl, aryl or aralkyl, each of R 22 , R 23 and R 24 independently is alkyl or phenyl, each of R 17 and R 18 independently of the other is hydrogen, alkyl, cycloalkyl, aryl, aralkyl, alkaryl, --COR 19 , --CN or halogen, and R 19 is hydrogen, alkyl or aryl.

Claim 4

A composition according to claim 2, wherein R 16 , R 17 and R 18 are hydrogen.

Claim 5

A conductive composition according to claim 1, which contains polypyrrole in the oxidised form and, as counterion, an anion selected from the group consisting of BF 4 - , PF 6 - , AsF 6 - , SbF 6 - , SbCl 6 - , ClO 4 - , IO 4 - , HSO 4 - , SO 4 2- , CF 3 SO 3 - , CH 3 C 6 H 4 SO 3 - , CF 3 COO - , HC 2 O 4 - or [Fe(CN) 6 ] 3- , alkyl sulfate, alkyl sulfonate, alkyl phosphate or alkyl phosphonate, or a combination of such anions.

Claim 6

A composition according to claim 1, wherein the soluble polyimide is a compound containing the structural unit of formula I, wherein Z is a radical selected from ##STR57## or a combination of such radicals, wherein R 1 is hydrogen or C 1 -C 5 alkyl, and Z' is a radial selected from ##STR58## or a combination of such radicals, wherein R 6 to R 9 are each independently hydrogen, halogen or C 1 -C 5 alkyl, and Q 2 is --CH 2 --, --CO--, --O--, --S--, --SO--, --SO 2 -- or --C(CH 3 ) 2 --.

Claim 7

A composition according to claim 5, which contains a soluble polyimide of formula I, wherein (1) out of the total number of recurring polyimide units (A) 0 to 100% of such units have Z equal to a phenylindane radical of the structural formula ##STR59## and (B) 0 to 100% of such units have Z' equal to a phenylindane radical of the structural formula ##STR60## wherein R 1 is hydrogen or C 1 -C 5 alkyl and R 6 and R 9 are each independently hydrogen, halogen or C 1 -C 5 alkyl, with the proviso that (2) out of the total number of radicals Z and Z', at least 10% are phenylindane radicals.

Claim 8

A composition according to claim 6, wherein Z is ##STR61## and Z' is ##STR62## or mixture thereof.

Claim 9

A composition according to claim 5, wherein Z is a radical selected from ##STR63## or is a combination of such radicals, and Z' is a radical selected from ##STR64## or, is a combination of such radicals, and wherein at least one of the radicals R 6 to R 9 is C 1 -C 5 alkyl.

Claim 10

A composition according to claim 1, which contains a polyimide of formula I, wherein Z is selected from ##STR65## and Z' is selected from ##STR66## wherein Q 4 is --O--, --S--, --SO 2 --, --CH 2 --, --CO-- or --C(CH 3 ) 2 -- and R 2" is C 1 -C 5 alkoxy, halogen, --COOH, --OH or --SO 3 H, and at least 30% of the groups Z are a radical of the formula ##STR67## and at least 30% of the groups Z' are radicals of the formulae ##STR68## or the mixture thereof said polyimides having a solubility in phenol of more than 10% by weight, and 0.5 g/100 ml of said polyimides having an inherent viscosity of more than 0.05 in m-cresol (at 30° C.).

Claim 11

A composition according to claim 1, which contains a polyimide of formula I, wherein Z is ##STR69## and 10 to 90% of the radicals Z' are 4,4'-diphenylmethane and the remainder are ##STR70## or mixture thereof.

Claim 12

A composition according to claim 1 wherein the polypyrrole is a homopolymer or copolymer of pyrrole, of a substituted pyrrole or of a mixture thereof; or is a copolymer of pyrrole, of a substituted pyrrole or of a mixture thereof with a 5- or 6-membered heteroaromatic compound.