A polymer composition comprising a star-branched copolymer having a plurality of arms is disclosed. Each polymer arm has a molecular weight Mp of from 1 kg/mol to 50 kg/mol and comprises polymerized units (i) derived from a first vinyl aromatic monomer comprising a radical-reactive group, wherein from greater than 10 mol % to 100 mol % of the units (i) are unhydrogenated; and optionally, polymerized units (ii) comprising hydrogenated and unhydrogenated forms of polymerized units derived from a high Tg monomer, and hydrogenated form of polymerized units (i) or hydrogenated form of polymerized styrene units; and optionally, polymerized units (iii) comprising (a) hydrogenated form of polymerized units derived from one or more acyclic conjugated dienes, and (b) polymerized units derived from one or more of a second vinyl aromatic monomer; wherein less than 10 wt. % of units (a) are unhydrogenated.

The present disclosure is directed to providing a binder composition for a non-aqueous secondary battery electrode which can improve the peel strengths of electrodes while increasing the pressibilities of pre-pressing electrode mixed material layers. The presently disclosed binder composition contains a polymer A, wherein the polymer A includes an aliphatic conjugated diene monomer unit and a nitrile-group containing monomer unit, and the polymer A has a THF-insoluble content of 20% by mass or less.

A resist composition containing a resin component (A1) having a constitutional unit derived from a compound represented by General Formula (a01-1). In the formula, W.sup.01 represents a polymerizable group-containing group, C.sup.t represents a tertiary carbon atom, and X.sup.t represents a group that forms a monocyclic or polycyclic alicyclic group together with C.sup.t, Ra.sup.1 to Ra.sup.3 represents a hydrocarbon group having 1 to 10 carbon atoms, which may have a substituent, or a hydrogen atom, or two or more of Ra.sup.1 to Ra.sup.3 are bonded to each other to form an aliphatic ring, not all of Ra.sup.1 to Ra.sup.3 are hydrogen atoms, n represents 0 or 1 ##STR00001##

A resist composition containing a resin component (A1) having a constitutional unit derived from a compound represented by General Formula (a01-1). In the formula, W.sup.01 represents a polymerizable group-containing group, C.sup.t represents a tertiary carbon atom, and X.sup.t represents a group that forms a monocyclic or polycyclic alicyclic group together with C.sup.t, Ra.sup.1 to Ra.sup.3 represents a hydrocarbon group having 1 to 10 carbon atoms, which may have a substituent, or a hydrogen atom, or two or more of Ra.sup.1 to Ra.sup.3 are bonded to each other to form an aliphatic ring, not all of Ra.sup.1 to Ra.sup.3 are hydrogen atoms, n represents 0 or 1 ##STR00001##

A resist composition containing a resin component (A1) having a constitutional unit derived from a compound represented by General Formula (a01-1). In the formula, W.sup.01 represents a polymerizable group-containing group, C.sup.t represents a tertiary carbon atom, and X.sup.t represents a group that forms a monocyclic or polycyclic alicyclic group together with C.sup.t, Ra.sup.1 to Ra.sup.3 represents a hydrocarbon group having 1 to 10 carbon atoms, which may have a substituent, or a hydrogen atom, or two or more of Ra.sup.1 to Ra.sup.3 are bonded to each other to form an aliphatic ring, not all of Ra.sup.1 to Ra.sup.3 are hydrogen atoms, n represents 0 or 1

##STR00001##

Compositions resulting from the mixing of at least: a comb polydiol copolymer A1 and a compound A2 including at least two boronic ester functional groups, the comb polydiol copolymer A1 including a main chain and side chains, at least a portion of the side chains of the copolymer A1 being composed of oligomers. They exhibit very varied rheological properties depending on the proportion of the compounds A1 and A2 used. Composition resulting from the mixing of at least one lubricating oil with such a composition of associative and exchangeable polymers and use of this composition for lubricating a mechanical part.

Compositions resulting from the mixing of at least: a comb polydiol copolymer A1 and a compound A2 including at least two boronic ester functional groups, the comb polydiol copolymer A1 including a main chain and side chains, at least a portion of the side chains of the copolymer A1 being composed of oligomers. They exhibit very varied rheological properties depending on the proportion of the compounds A1 and A2 used. Composition resulting from the mixing of at least one lubricating oil with such a composition of associative and exchangeable polymers and use of this composition for lubricating a mechanical part.

Provided is a resin which is excellent in terms of solubility in common solvents, crosslinking temperature, time required for crosslinking, solvent resistance (cracking resistance), breakdown voltage, leakage current, solvent wettability, and planarity in cases where the resin is formed into a thin film. A resin which comprises repeating units represented by formula (1) and formula (2), and wherein the repeating unit represented by formula (2) is contained in an amount of 20% by mole or more relative to the total amount of the repeating units represented by formula (1) and formula (2).

##STR00001##

Compositions resulting from the mixing of at least: a comb polydiol copolymer A1 and a compound A2 including at least two boronic ester functional groups, the comb polydiol copolymer A1 including a main chain and side chains, at least a portion of the side chains of the copolymer A1 being composed of oligomers. They exhibit very varied rheological properties depending on the proportion of the compounds A1 and A2 used. Composition resulting from the mixing of at least one lubricating oil with such a composition of associative and exchangeable polymers and use of this composition for lubricating a mechanical part.

A polymer composition comprising a star-branched copolymer having a plurality of arms is disclosed. Each polymer arm has a molecular weight Mp of from 1 kg/mol to 50 kg/mol and comprises polymerized units (i) derived from a first vinyl aromatic monomer comprising a radical-reactive group, wherein from greater than 10 mol % to 100 mol % of the units (i) are unhydrogenated; and optionally, polymerized units (ii) comprising hydrogenated and unhydrogenated forms of polymerized units derived from a high Tg monomer, and hydrogenated form of polymerized units (i) or hydrogenated form of polymerized styrene units; and optionally, polymerized units (iii) comprising (a) hydrogenated form of polymerized units derived from one or more acyclic conjugated dienes, and (b) polymerized units derived from one or more of a second vinyl aromatic monomer; wherein less than 10 wt. % of units (a) are unhydrogenated.