This polymer composition includes: a modified conjugated diene-based polymer having at least one nitrogen-containing functional group selected from the group consisting of a primary amino group, a secondary amino group, a tertiary amino group, a primary amino group having been protected or converted into an onium group, a secondary amino group having been protected or converted into an onium group, and a tertiary amino group having been converted into an onium group; and a functional-group-containing polymer having at least one functional group selected from the group consisting of an epoxy group, an acid anhydride structure, an oxazoline group, a hydroxyl group, a carboxyl group, and a sulfo group.

Provided are amino acid based polymerizable compounds and their applications in ophthalmic devices. The amino acid based polymerizable compounds are of formula I:

##STR00001##

wherein R, R.sup.1, and R.sup.2 are as described herein.

Provided are amino acid based polymerizable compounds and their applications in ophthalmic devices. The amino acid based polymerizable compounds are of formula I:

##STR00001##

wherein R, R.sup.1, and R.sup.2 are as described herein.

A charge-transfer salt formed from a material comprising a repeat unit of formula (I) and an n-dopant: wherein BG is a backbone group of the repeat unit; R.sup.1 is a ionic substituent comprising at least one cationic or anionic group; n is at least 1; R.sup.2 is a non-ionic substituent; and m is 0 or a positive integer; the material further comprising a counterion balancing the charge of the cationic or anionic group. ##STR00001##

A synthesis method includes synthesising copolydendrimers containing heteroatoms from at least two dendrimers as starting precursors.

A synthesis method includes synthesising copolydendrimers containing heteroatoms from at least two dendrimers as starting precursors.

Described herein are associative polymers capable of controlling a physical and/or chemical property of non-polar compositions and related compositions, methods and systems. Associative polymers herein described have a non-polar backbone and functional groups presented at ends of the non-polar backbone, with a number of the functional groups presented at the ends of the non-polar backbone formed by associative functional groups capable of undergoing an associative interaction with another associative functional group with an association constant (k) such that the strength of each associative interaction is less than the strength of a covalent bond between atoms and in particular less than the strength of a covalent bond between backbone atoms.

Provided is an agent for dispersing an electrically conductive carbon material, in which the agent consists of a polymer which has an oxazoline group in a side chain and which is obtained by using an oxazoline group-containing monomer such as that represented by formula (1) for example, and in which the agent exhibits excellent dispersion of an electrically conductive carbon material and produces a thin film that exhibits excellent adhesion to a current collection substrate when formed into a thin film together with the electrically conductive carbon material. ##STR00001## (In the formula, X denotes a polymerizable carbon-carbon double bond-containing group, and R.sup.1-R.sup.4 each independently denote a hydrogen atom, a halogen atom, an alkyl group optionally having a branched structure having 1-5 carbon atoms, an aryl group having 6-20 carbon atoms, or an aralkyl group having 7-20 carbon atoms.)

Provided is an agent for dispersing an electrically conductive carbon material, in which the agent consists of a polymer which has an oxazoline group in a side chain and which is obtained by using an oxazoline group-containing monomer such as that represented by formula (1) for example, and in which the agent exhibits excellent dispersion of an electrically conductive carbon material and produces a thin film that exhibits excellent adhesion to a current collection substrate when formed into a thin film together with the electrically conductive carbon material. ##STR00001## (In the formula, X denotes a polymerizable carbon-carbon double bond-containing group, and R.sup.1-R.sup.4 each independently denote a hydrogen atom, a halogen atom, an alkyl group optionally having a branched structure having 1-5 carbon atoms, an aryl group having 6-20 carbon atoms, or an aralkyl group having 7-20 carbon atoms.)

A compound of formula (I): (Core)n-(X)m wherein Core is a core group; n is 0 and m is 1, or n is 1 and m is at least 1; and X is a group of formula (II): wherein: R.sup.1, R.sup.3 and R.sup.5 are each independently H or a substituent; R.sup.2 and R.sup.4 are each a substituent; one of R.sup.1-R.sup.5 is a direct bond or divalent linking group linking the group of formula (II) to Core in the case where n is 1; x and y are 0, 1, 2, 3 or 4; and the compound of formula (I) is substituted with at least one ionic substituent. The compound may be used as an n-dopant to dope an organic semiconductor. ##STR00001##