(US4762644-A)      Electroconductive polymer soln. comprises a polymer comprising at least 50 mole % of recurring units of formula (I): in which R1 through R4 are the same or different and are H or 1-5C alkyl or alkoxy, provided that at least two of R1 through R4 are 1-5C alkyl or alkoxy; a dopant; and an organic solvent.    Pref. the amt. of dopant is 10-90 mole %, based on the recurring units of the polymer. Pref. the polymer concn. in the soln. is 0.01-90 % by wt.    ADVANTAGE -   New soln. has high electroconductivity, good stability in air, and is very safe while in use. (7pp)c    (EP214310-B)      An electroconductive polymer soln. comprising a polymer derived from a nuclear substituted aniline, a dopant and a solvent, characterised in that said polymer comprises at least 50 mole-% of recurring units represented by the following general formula (1) wherein R1 to R4, which may be the same or different, represent a hydrogen atom or an alkoxy group having 1 to 5 carbon atoms, with the proviso that the case where all of R1 to R4 simultaneously represent a hydrogen atom is excluded, and said solvent is an organic solvent. (13pp)    (JP93080509-B)      Conductive polymer solns. comprise (1) oxidn.-polymers of aniline derivs. of formula (I), (2) dopants and (3) organic solvents (R1-R4 = H, 1-5C alkyl or alkoxy gps.; and all of R1-R4 are not H atoms at the same time).    Pref. (1) contains at least 50 mole % of the repeat unit of formula (I). (1) contains 10-90 mole % (per monomer unit) of (2). (1) includes oxidn. polymers of aniline derivs. and dopant-contg. oxidn. polymers of aniline derivs. In the case where (1) contains dopants (e.g. Cl, Br-, BF4-), (2) is unrequired for the prepn. of the conductive polymer solns.. The polymer solns. contain 0.01-90 wt.% of (1) and have conductivity of 10 power -5 to 0.1 S/cm.    USE/ADVANTAGE -   The polymer solns. have high electroconductivity, high stability in air and are used as battery and condenser electrolytes. (J61204266-A)    (JP93086601-B)      The oxidative polymer of an aniline deriv. of formula (I) is new. (Where R1-R4 = H, 1-5C alkyl or 1-5C alkoxy; R1-R4 are not H at same time. A conductive polymer soln. consists of the oxidative polymer of the aniline deriv. dopant, and an organic solvent. An article is moulded by the conductive polymer soln. The organic solvent is then removed. Organic solvent is e.g. aromatic gp. ketones, ethers, esters, amides, etc.    USE/ADVANTAGE -   The conductive polymer soln. has no toxicity and has improved workability. Any shaped conductive article is easily made. The conductive article is stable in the air and has high electrical conductivity. The article is useful for an electromagnetic shielding material, solar cell, junction device, electrochromic device. (J61206106-A)