(US4952667-A)      Copolymer of formula (I) is new. In (I), Ar is a gp.    (a)-(c); R1 is H or 1-20C hydrocarbyl gp.; R2 is H, 1-20C hydrocarbyl gp., furyl, pyridyl, chlorophenyl, nitrophenyl or methoxyphenyl; n is an integer not less than 2 when Ar is (a) or (b), or n is an integer of at least 1 when Ar is (c); and x is at least 2. An electroactive polymer is obtd. by doping the copolymer with an electron acceptor.    ADVANTAGE -   Since the copolymer is linear, it has superior processability, making it possible to obtain various shaped articles.    (16pp)    (JP94068001-B2)      A copolymer of formula -((Ar)n-CHR2)x- is new, where Ar = gp. of formula (I-III) R1 = H or 1-20C hydrocarbon gp.; R2 = H, 1-20C hydrocarbon gp., furyl, pyridyl, chlorophenyl, nitrophenyl or methoxyphenyl; n = 1 or more; and x = 2 or more.    USE/ADVANTAGE -   The copolymer is soluble in chloroform, N-methylpyrrolidone, nitrobenzene and sulphuric acid but insoluble in alcohols, aliphatic hydrocarbons, propylene carbonate and acetonitrile, used in organic electrolyte batteries. It is a thermoplastic which melts on heating, has superior processability and can be formed into shaped prods. It exhibits high electroactivity by being doped with electron acceptor and permits a redox reaction to be performed in good repeatability, when used as a sec. battery electrode it exhibits stable characteristics even when a large number of charge-discharge cycles are carried out.    (JP94068002-B2)      A copolymer of formula -((Ar)n-CHR2)x- is new, where Ar = gp. of formula (I-III) R1 = H or 1-20C hydrocarbon gp.; R2 = H, 1-20C hydrocarbon gp., furyl, pyridyl, chlorophenyl, nitrophenyl or methoxyphenyl; n = 1 or more; and x = 2 or more.    USE/ADVANTAGE -   The copolymer is soluble in chloroform, N-methylpyrrolidone, nitrobenzene and sulphuric acid but insoluble in alcohols, aliphatic hydrocarbons, propylene carbonate and acetonitrile, used in organic electrolyte batteries. It is a thermoplastic which melts on heating, has superior processability and can be formed into shaped prods. It exhibits high electroactivity by being doped with electron acceptor and permits a redox reaction to be performed in good repeatability, when used as a sec. battery electrode it exhibits stable characteristics even when a large number of charge-discharge cycles are carried out.    (JP94081778-B2)      A copolymer of formula -((Ar)n-CHR2)x- is new, where Ar = gp. of formula (I-III) R1 = H or 1-20C hydrocarbon gp.; R2 = H, 1-20C hydrocarbon gp., furyl, pyridyl, chlorophenyl, nitrophenyl or methoxyphenyl; n = 1 or more; and x = 2 or more.    USE/ADVANTAGE -   The copolymer is soluble in chloroform, N-methylpyrrolidone, nitrobenzene and sulphuric acid but insoluble in alcohols, aliphatic hydrocarbons, propylene carbonate and acetonitrile, used in organic electrolyte batteries. It is a thermoplastic which melts on heating, has superior processability and can be formed into shaped prods. It exhibits high electro-activity by being doped with electron acceptor and permits a redox reaction to be performed in good repeatability, when used as a sec. battery electrode it exhibits stable characteristics even when a large number of charge-discharge cycles are carried out.    (JP7070313-A)      Electroconductive polymer -((PhNR1Ph)CHR2)-x (I) prepared by doping copolymer (II) having repeat unit of formula (III) with electron acceptor(s) (IV) is new. In (I), R1 = H, 1-20C hydrocarbon residue; R2 = H, 1-20C hydrocarbon residue, furyl, pyridyl, methoxyphenyl, and; n, x = integers 2 or more.    Pref. (II) is prepd. by reaction of 4,4'-diphenylamine polymer(s) (V) with aldehyde(s) (VI) by procedure described in JP61206179, JP61028524, more concretely, (II) having R1 = 1-8C hydrocarbon residue, n = integer 2-8 is used suitably. Pref. (IV) is e.g. halogen (e.g. iodine), metal halide(s), (e.g. iron (III) chloride), protic acid(s) (e.g. sulphuric acid), PF6-, AsF6-, ClO4- etc. (I)-(II) is prepared by reaction of (V) with (VI) at 0-200 deg.C in solvent in the presence of alkali catalyst or acid catalyst. (II) is moulded to optional forms, the mouldings are doped with (IV) to obtain (I).    USE/ADVANTAGE -   (I) is useful as material for prepn. of functional electrodes; for example, for secondary battery electrodes. (I) has good stability to oxidation and reduction and recyclability. Mouldings of (I) is prepared by moulding (II) to optional forms and doping the resulting matter with (IV), mouldings of (I) are prepd. readily.    In an example, iron (III) chloride (50.0g) and N-methyldiphenylamine (18.3g) were dissolved in ethanol (150ml), the solution was stirred at room temperature for 24 hr. under nitrogen atmosphere to obtain (V) (R1 = methyl). (V) (2.0g) was dissolved in dioxane (40ml), sulphuric acid (0.5ml), propionaldehyde (0.38g)/dioxane (20ml) solution were added, the mixture was stirred at 85 deg.C for 3 hr. to obtain (II). (II) was topped on platinum net, doped with tetra-n-butylammonium perchlorate solution electrolytically to obtain (I).    (JP2566881-B2)      Tert.-amino polymer is of formula (I), (where R1 = H or 1-20C hydrocarbon residue, R2 = H, 1-20C hydrocarbon residue, pyridyl, methoxy-phenyl gp., n and x are integers).    USE -   Tert.-amino polymer is used as a conductive material.    ADVANTAGE -   Workability is excellent, various compacts can be mfd. simply, having excellent conductivity.