Abstract: A conductive polyaniline composition of a substituted or unsubstituted polyaniline complex and a compound with a phenolic hydroxyl group dissolved in an organic solvent substantially immiscible with water that is capable of producing a molded article possessing high conductivity.

Abstract: A conductive multilayer stack (1) including a conductive substrate (10) having an inorganic conductive layer (3); and a conductive high-molecular-weight compound layer (4) provided on the inorganic conductive layer (3). The conductive high-molecular-weight compound layer (4) may preferably be a layer obtained by forming a conductive polyaniline composition into a film; the conductive polyaniline composition including: a protonated substituted or unsubstituted polyaniline composite (a) and a compound (b) containing a phenolic hydroxyl group, dissolved in an organic solvent.

Abstract: A conductive polymer multilayer body including a substrate and a thin film provided thereon with a thickness of 1 ?m or less which is formed of a conductive polyaniline composition containing a protonated substituted or unsubstituted polyaniline composite (a) dissolved in an organic solvent which is substantially immiscible with water and a compound having a phenolic hydroxyl group (b).

Abstract: There is disclosed a process for producing a styrenic polymer which comprises polymerizing at least one styrenic monomer by the use of a polymerization catalyst comprising in combination (A) at least one transition metal compounds, (B) an aluminoxane, (C) a coordination complex compound comprising a cation and an anion in which a plurality of radicals are bonded to a metal and (D) an organoaluminum compound. The above process is capable of producing a styrenic polymer which has high degree of syndiotactic configuration and a wide range of molecular weight distribution and is minimized in residual metallic components at a low production cast with a high efficiency.

Abstract: A catalyst for the production of a vinyl polymer, which comprises: in combination, (A) a transition metal complex of the formula: ##STR1## wherein each of T.sup.1, T.sup.2, T.sup.3 and T.sup.4, independently of each other, is C.sub.1-20 -alkyl or C.sub.6-20 -aryl, M is a Group IV-VI transition metal and Q is C.sub.1-20 -alkoxy, (B) an aluminoxane or ionic compound having a non-coordinating anion and a cation and (C) a Lewis acid.Component (B) can be a combination of an aluminoxane and an ionic compound having a non-coordinating anion and a cation.

Abstract: There is disclosed a process for producing a styrenic polymer which comprises polymerizing at least one styrenic monomer by the use of a polymerization catalyst comprising in combination (A) at least one transition metal compounds, (B) an aluminoxane, (C) a coordination complex compound comprising a cation and an anion in which a plurality of radicals are bonded to a metal and (D) an organoaluminum compound. The above process is capable of producing a styrenic polymer which has high degree of syndiotactic configuration and a wide range of molecular weight distribution and is minimized in residual metallic components at a low production cast with a high efficiency.

Abstract: A catalyst for producing a styrenic polymer which comprises an (A) transition metal compound having one and only one .pi.-ligand comprising only one indenyl group, said indenyl group bearing a substituent group at at least the 1-, 2-, or 3-positions of the indenyl ring, and wherein the transition metal is preferably at least one metal selected from the group consisting of titanium, zirconium, hafnium, niobium and tantalum, and optionally (B) at least one compound selected from the group consisting of 1 an aluminoxane and 2 an ionic compound comprising an anion that does not coordinate to the transition metal compound of component (A) in its cationic form, and a cation, and further optionally (C) a Lewis acid; and a process for producing a styrenic polymer using the catalyst.

Abstract: The present invention relates to a process for efficiently producing an aromatic vinyl compound-based copolymer having a high degree of syndiotactic configuration in its aromatic vinyl chain by copolymerizing an aromatic vinyl compound with an olefin, etc. in the presence of a catalyst comprising (A) a transition metal compound, (B) an ionic compound comprising a non-coordinate anion and a cation of a typical metal belonging to the group 4 and (C) a Lewis acid to be used as the case may be. It is made possible by the use of the highly active catalyst according to the above process to efficiently produce an aromatic vinyl compound-based copolymer which is minimized in residual amounts of ash and toxic substances a high degree of syndiotactic configuration in its aromatic vinyl chain, while dispensing with an expensive aluminoxane.

Abstract: An olefin polymer is prepared by homopolymerizing an olefin or copolymerizing two different olefins or an olefin and another polymerizable unsaturated compound in the presence of a polymerization catalyst containing (A) a transition metal compound represented by the formula (I):CpML.sub.x-1 (I)wherein M is a metallic element of Groups 3 to 10 of the Periodic Table or a metallic element of the lanthanide series; Cp is a cyclic compound group having a cyclopentadienyl skeleton of 5 to 30 carbon atoms; L is R', OR', SR', SO.sub.3 R'N'R'R", PR'R", wherein R' and R" are each a C.sub.1-20 hydrocarbon group or a silyl group, NO.sub.2, a halogen atom, a 1-pyrrolyl group or a 1-pyrrolidinyl group, with the proviso that at least one of the L groups is OR', SR', N'R'R" or PR'R", wherein R' and R" are each a C.sub.

Abstract: There are disclosed a catalyst for producing an aromatic vinyl compound-based polymer composition which catalyst comprises (A) at least two different transition metal compounds each having one .pi.-ligand and (B) an ionic compound comprising a noncoordinate anion and a cation and/or an aluminoxane, and (C) a Lewis acid to be used as the case may be; and a process for producing an aromatic vinyl compound-based polymer composition having a high degree of syndiotactic configuration in its aromatic vinyl chains which process comprises polymerizing an (a) aromatic vinyl compound and (b) an olefinic compound and/or a diolefinic compound in the presence of the above catalyst.

Abstract: There are disclosed a transition metal compound of the general formula RMX.sub.a-1 L.sub.b (R is as a .pi. ligand, a fused polycyclic cyclopentadienyl group in which at least one of many-membered rings to which cyclopentadienyl groups are fusedly bonded is a saturated ring, M is a transition metal, X is a .sigma. ligand, L is a Lewis base, a is the valency of M, and b is 0, 1 or 2); a polymerization catalyst for styrene, etc. comprising the above transition metal, preferably further comprising an oxygen atom containing compound ionic compound or organoboron compound and optionally a Lewis base; and a process for producing a polymer of a compound containing an ethylenically unsaturated double bond or an acetylenic polymer, especially a syndiotactic polystyrene by using the above polymerization catalyst. The catalyst is particularly effectivive for producing highly syndiotactic polystyrene minimized in residual metals amounts at a low cost in enhanced efficiency.

Abstract: There are disclosed a catalyst which comprises (A) a titanium compound having one .pi. electron-based ligand (e.g. pentamethylcyclopentadienyl group) or two same .pi. electron-based lignads and (B) an ionic compound comprising a non-coordinate anion and a cation of an element typifying the group 4 elements of the Periodic Table (e.g. triphenylcarbonium tetra(pentafluorophenyl)borate; a catalyst comprising (C) an alkylating agent (e.g. triisobutylaluminum) in addition to the components (A) and (B); and a process for producing a styrenic polymer by the use of any of the aforesaid catalysts. By using the aforementioned catalyst and process, a highly syndiotactic styrenic polymer can be efficiently produced.

Abstract: There are disclosed a catalyst for producing an aromatic vinyl compound polymer which catalyst comprises a contact product between an (A) trivalent titanium compound and a (B) compound represented by the general formula (II) or (III)R.sup.1.sub.k M.sup.1 L.sup.2.sub.m (II)R.sup.1.sub.k M.sup.1 X.sup.2.sub.l L.sup.2.sub.m (III)a (C) an ionic compound comprising a noncoordinate anion and a cation, an aluminoxane or an organoboron compound; and optionally a (D) Lewis acid, and a process for producing an aromatic vinyl compound polymer having a high degree of syndiotactic configuration which process comprises polymerizing (a) an aromatic vinyl compound or (b) an aromatic vinyl compound together with an olefin or a diolefin in the presence of the above catalyst.

Abstract: There are disclosed a catalyst which comprises (A) a titanium compound having one .pi. electron-based ligand (e.g. pentamethylcyclopentadienyl group) or two same .pi. electron-based lignads and (B) an ionic compound comprising a non-coordinate anion and a cation of an element typifying the group 4 elements of the Periodic Table (e.g. triphenylcarbonium tetra(pentafluorophenyl)borate; a catalyst comprising (C) an alkylating agent (e.g. triisobutylaluminum) in addition to the components (A) and (B); and a process for producing a styrenic polymer by the use of any of the aforesaid catalysts. By using the aforementioned catalyst and process, a highly syndiotactic styrenic polymer can be efficiently produced.

Abstract: There are disclosed a process for producing a styrene polymer having a high degree of syndiotactic configuration at a reduced cost and an enhanced efficiency, and a catalyst to be used therefor which comprises (A) a specific transition-metal compound, (B) a specific coordination complex compound and (C) a compound having an alkyl group. The catalyst according to the present invention is inexpensive compared with the conventional catalyst containing aluminoxane as the major ingredient, and exhibits a high activity in polymerizing a styrenic monomer into styrene polymer with a high degree of syndiotacticity as well as a high yield and conversion rate.

Abstract: There are disclosed a process for producing a styrene polymer having a high degree of syndiotactic configuration at a reduced cost and an enhanced efficiency, and a catalyst to be used therefore which comprises (A) a specific transition-metal compound, (B) a specific coordination complex compound and (C) a compound having an alkyl group.The catalyst according to the present invention is inexpensive compared with the conventional catalyst containing aluminoxane as the major ingredient, and exhibits a high activity in polymerizing a styrenic monomer into styrene polymer with a high degree of syndiotacticity as well as a high yield and conversion rate.

Abstract: Disclosed is a process for producing a styrene-based polymer by contacting a styrene-type monomer with alkylaluminoxane previously, adding a transition metal compound and then polymerizing of the styrene-type monomer.By using the process of the present invention, polymerization of a styrene-type monomer can be carried out with a high catalytic activity, and a styrene-based polymer having high syndiotacticity can be obtained with high efficiency.The sytrene-based polymer having a high degree of syndiotactic configuration of this invention has various excellent physical properties such as heat resistance and chemical resistance, and can be effectively and widely utilized for various applications.

Abstract: There are disclosed a transition metal compound of the general formula RMX.sub.a-1 L.sub.b (R is a .pi. ligand, a fused polycyclic cyclopentadienyl group in which at least one of many-membered rings to which cyclopentadienyl groups are fusedly bonded is a saturated ring, M is a transition metal, X is a .sigma. ligand, L is a Lewis base, a is the valency of M, and b is 0, 1 or 2); a polymerization catalyst for styrene, etc. comprising the above transition metal, preferably further comprising an oxygen atom containing compound ionic compound or organoboron compound and optionally a Lewis base; and a process for producing a polymer of a compound containing an ethylenically unsaturated double bond or an acetylenic polymer, especially a syndiotactic polystyrene by using the above polymerization catalyst. The catalyst is particularly effective for producing highly syndiotactic polystyrene minimized in residual metals amounts at a low cost in enhanced efficiency.