A method for producing a dicyclopentadiene-modified phenolic resin. The method including reusing a fluorine-based ion-exchange resin as a catalyst in a reaction between a phenol and a dicyclopentadiene, the fluorine-based ion-exchange resin having been used as a catalyst when a phenol and a dicyclopentadiene are allowed to react with each other to produce a first dicyclopentadiene-modified phenolic resin. In the method, the fluorine-based ion-exchange resin is washed with an organic solvent. The dicyclopentadiene-modified phenolic resin obtained by the method has a stable quality, has a high purity, and is inexpensive.

The present invention relates to a process for producing cycloalkenamer-containing compositions, comprising the steps of: a) converting at least one cycloalkene by ring-opening metathetic polymerization to obtain a polyalkenamer-containing product mixture, and b) working up the product mixture to remove monomers and oligomers of the cycloalkenes to obtain the polyalkenamer-containing composition by extraction with CO.sub.2, whereby the polyalkenamers are polymers of cycloalkenes which comprise at least five cycloalkane monomer units, wherein the extraction comprises at least two stages: b0) an extraction with liquid CO.sub.2, then b1) an extraction with supercritical CO.sub.2, then b2) an extraction with gaseous CO.sub.2, then b0) an extraction with liquid CO.sub.2, then and then b3) an extraction with supercritical CO.sub.2.

Four conjugated copolymers with a donor/acceptor architecture including 4,4-dihexadecyl-4H-cyclopenta[1,2-b:5,4-b]dithiophene as the donor structural unit and benzo[2,1,3]thiodiazole fragments with varying degrees of fluorination have been synthesized and characterized. It has been shown that the HOMO levels were decreased after the fluorine substitution. The field-effect charge carrier mobility was similar for all polymers with less than an order of magnitude difference between different acceptor units.

A method for producing a PEDOT film on a substrate comprising a substrate and at least one PEDOT layer on a surface of the substrate is disclosed. The method comprises applying a solution comprising an oxidant and a base inhibitor on a surface of the substrate; subjecting the oxidant-coated substrate to a polymerization step by exposing the surface(s) of the oxidant-coated substrate to EDOT monomer vapour at a polymerization temperature; and wherein, during the polymerization step, the temperature of the oxidant-coated substrate is kept at a controlled substrate temperature and wherein the controlled substrate temperature is 2-40? C. lower than the polymerization temperature. Further is disclosed a conducting PEDOT film, an electronic device comprising the conducting PEDOT film and different uses of the conducting PEDOT film. Further, is disclosed a method for producing a polymer film formed of a copolymer, a conducting polymer film, an electronic device comprising the conducting polymer film and different uses of the conducting polymer film.

Disclosed is a liquid composition comprising a complex of a polythiophene and a polyanion and at least one solvent that is suitable for forming a conductive polymer coating. Also disclosed is a process for the preparation of the liquid composition, and a process for the preparation of a layered body.

A ring-opened copolymer including structural units derived from a norbornene compound having a specific structure and structural units derived from a monocyclic olefin, wherein the proportion of the structural units derived from a norbornene compound is 25 to 90 wt % and the proportion of the structural units derived from a monocyclic olefin is 10 to 75 wt % relative to the total repeating structural units in the ring-opened copolymer, the weight average molecular weight of the ring-opened copolymer is 100,000 to 1,000,000, and the cis/trans ratio of the ring-opened copolymer is 0/100 to 50/50.

The present invention relates to a process for producing cycloalkenamer-containing compositions and to such cycloalkenamer-containing compositions. The invention further relates to the use of these cycloalkenamer-containing compositions in the field of packaging materials, especially for food and drink.

The present embodiment provides a material for forming an underlayer film for lithography, containing at least any of a compound represented by following formula (1) or a resin including a structural unit derived from a compound represented by the following formula (1),

##STR00001##

wherein R.sup.1 represents a 2n-valent group having 1 to 60 carbon atoms, or a single bond, each R.sup.2 independently represents a halogen atom, a straight, branched or cyclic alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an alkoxy group having 1 to 30 carbon atoms, a thiol group, a hydroxyl group, or a group where a hydrogen atom of a hydroxyl group is substituted with an acid-dissociable group, and may be the same or different in the same naphthalene ring or benzene ring, in which at least one R.sup.2 represents a group where a hydrogen atom of a hydroxyl group is substituted with an acid-dissociable group, n is an integer of 1 to 4, and structural formulae of n structural units in square brackets [ ] may be the same or different when n is an integer of 2 or more, X represents an oxygen atom, a sulfur atom, or an uncrosslinked state, each m.sup.2 is independently an integer of 0 to 7, provided that at least one m.sup.2 is an integer of 1 to 7, and each q is independently 0 or 1.

A conductive polymer dispersion comprising a polythiophene and a polyanion, characterized in that the polyanion is a homo- or copolymer of amonomer unit according to Formula (I), wherein any of R.sub.1 to R.sub.5 is selected from the group consisting of hydrogen, a halogen, an ether and a substituted or unsubstituted alkyl group with the proviso that at least one of R.sub.1 to R.sub.5 is a substituent according to Formula (II), wherein L represents a divalent linking group having less than (20) carbon atoms; n represents 0 or 1; R.sub.6 and R.sub.7 are independently selected from the group consisting of hydrogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted alkynyl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted alkaryl group and a substituted or unsubstituted aryl or heteroaryl group; any of L, R.sub.6 and R.sub.7 may represent the necessary atoms to form a 5 to 8 membered ring; M represents hydrogen or a counterion to compensate the negative charge of the sulfonate group; the dashed line represents a covalent bond to the phenyl ring of Formula (I).

##STR00001##

##STR00002##

Four conjugated copolymers with a donor/acceptor architecture comprising 4,4-dihexadecyl-4H-cyclopenta[1,2-b:5,4-b]dithiophene as the donor structural unit and benzo[2,1,3]thiodiazole fragments with varying degrees of fluorination have been synthesized and characterized. It has been shown that the HOMO levels were decreased after the fluorine substitution. The field-effect charge carrier mobility was similar for all polymers with less than an order of magnitude difference between different acceptor units. Methods of increasing yield of the copolymers, controlling molecular weight of the copolymers, and endcapping the copolymers are also described.