A random copolymer comprising the monomer units A and B. In this random copolymer A comprises

##STR00001##

and B comprises

##STR00002##

Additionally, R1 R2, R3 and R4 are side chains independently selected from the group consisting of: H, Cl, F, CN, alkyl, alkoxy, alkylthio, ester, ketone and aryl groups. X1 and X2 are independently selected from the group consisting of: H, Cl, F, CN, alkyl, alkoxy, ester, ketone, amide and aryl groups.

A random copolymer comprising the monomer units A and B. In this random copolymer A comprises

##STR00001##

and B comprises an aryl group. Additionally, R.sub.1 and R.sub.2 are side chains independently selected from the group consisting of: H, Cl, F, CN, alkyl, alkoxy, alkylthio, ester, ketone and aryl groups. X1 and X2 are independently selected from the group consisting of: H, Cl, F, CN, alkyl, alkoxy, ester, ketone, amide and aryl groups.

A random copolymer comprising the monomer units A and B. In this random copolymer A comprises

##STR00001##

and B comprises

##STR00002##

Additionally, R1 R2, R3 and R4 are side chains independently selected from the group consisting of: H, Cl, F, CN, alkyl, alkoxy, alkylthio, ester, ketone and aryl groups. X1 and X2 are different and at least one is a Cl and the other is selected from the group consisting of: H, F, CN, alkyl, alkoxy, ester, ketone, amide and aryl groups.

A random copolymer comprising the monomer unit C and at least two out of the three monomer units A, B, and D. In the random copolymer A comprises

##STR00001##

B comprises

##STR00002##

D comprises

##STR00003##

and C comprises an aryl group. Additionally, R1 R2, R3, R4, R3′, and R4′ are side chains independently selected from the group consisting of: H, Cl, F, CN, alkyl, alkoxy, alkylthio, ester, ketone and aryl groups and wherein R3 and R3′ or R4 and R4′ are not equal.

The present application can provide a preparation method that can effectively produce a polymer having desired molecular weight characteristics and solubility in a solvent, and having a monomer composition, which is designed freely and variously according to the purpose, without unnecessary components with excellent polymerization efficiency and conversion rates, and a dispersion comprising the polymer formed by the preparation method.

The present invention relates to a non-aqueous ink composition containing (a) a polythiophene containing a repeating unit complying with formula (I); (b) metal oxide nanoparticles containing at least (b-1) a first metal oxide nanoparticle having an average primary particle diameter d.sub.1 and (b-2) a second metal oxide nanoparticle having an average primary particle diameter d.sub.2, wherein d.sub.1<d.sub.2; and (c) a liquid carrier containing one or more organic solvents, as well as a pile-up suppressor and a lifetime extension agent for an organic EL device, containing metal oxide nanoparticles containing at least the (b-1) and (b-2) described above, wherein d.sub.1<d.sub.2.

A polymer compound for use in an electroluminescent device may improve the durability (particularly the luminescence lifespan). The polymer compound includes Structural Unit (A) represented by Chemical Formula (1).

##STR00001##

In Chemical Formula (1), the definition of each substituent is as described in the detailed description.

An object of the invention is to provide an organic semiconductor element having high mobility and excellent temporal stability under high humidity, and a manufacturing method thereof. Another object is to provide a novel compound suitable for an organic semiconductor. Still another object is to provide an organic semiconductor film having high mobility and excellent temporal stability under high humidity and a composition for forming an organic semiconductor film that can suitably form the organic semiconductor film. The organic semiconductor element according to the invention includes an organic semiconductor layer containing an organic semiconductor having a repeating unit represented by Formula 1. ##STR00001##

A method of forming a crosslinked polymer comprising the step of reacting a crosslinkable group in the presence of a polymer, wherein:

the crosslinkable group comprises a core unit substituted with at least one crosslinkable unit of formula (I):

##STR00001##

the crosslinkable group is bound to the polymer or is a crosslinkable compound mixed with the polymer;

Ar is aryl or heteroaryl which may be unsubstituted or substituted with one or more substituents independently selected from monovalent substituents and a divalent linking group linking the unit of formula (I) to the core unit; and

R is independently in each occurrence H, a monovalent substituent or a divalent linking group linking the unit of formula (I) to the core unit, with the proviso that at least one R is not H.

This invention relates to compositions suitable for use as coatings. More particularly, this invention relates to compositions suitable for use as industrial coatings such as anti-corrosion coatings, protective coatings and adhesive coatings. This invention relates to compositions and methods for coating substrates. More particularly, the invention relates to coating compositions and methods for coating substrates, where the coating compositions comprise polymerized olefins and cyclic olefins, via different chemical transformations. The invention also relates to methods of applying the coatings to the substrates.