Provided is an antifouling coating composition, which can form a coating film having good hardness and good physical properties and having a wear degree appropriate for expressing a long-term antifouling effect, has a viscosity not being excessively high, and makes it possible to reduce a content of volatile organic compounds, and a polymer-containing composition which is suitable for obtaining the antifouling coating composition. The polymer-containing composition contains a (meth)acryl-based copolymer (A-1), in which the (meth)acryl-based copolymer (A-1) contains a constitutional unit (U11) or a constitutional unit (U12) having carboxylate forming an ionic bond with a divalent metal atom, and has a weight-average molecular weight of 1,000 to 5,000, and the polymer-containing composition has a coating film hardness (Martens hardness) equal to or higher than 2.5 N/mm.sup.2.

A surface finish composition including a silica-bonded reversibly cross-linked co-polymer and a water-dispersible polyurethane. The silica-bonded reversibly cross-linked co-polymer includes a base co-polymer including monomers derived from one or more ethylenic polymerizable monomers and an alkoxysilyl acrylate; a reversible cross-linking agent; and a silica nanoparticle bonded to the base co-polymer. The amount of water-dispersible polyurethane is 15-50% by weight of the combined amount of water-dispersible polyurethane and base co-polymer.

A surface finish composition including a silica-bonded reversibly cross-linked co-polymer and a water-dispersible polyurethane. The silica-bonded reversibly cross-linked co-polymer includes a base co-polymer including monomers derived from one or more ethylenic polymerizable monomers and an alkoxysilyl acrylate; a reversible cross-linking agent; and a silica nanoparticle bonded to the base co-polymer. The amount of water-dispersible polyurethane is 15-50% by weight of the combined amount of water-dispersible polyurethane and base co-polymer.

Compositions are obtained by mixing at least one oligomer A1, which is obtained by copolymerizing at least two monomers functionalized by diol functions with at least one second monomer, with at least one compound A2 having at least two boron ester functions. The compositions exhibit very varied rheological properties depending on the proportion of the compounds A1 and A2 used. A composition is also obtained by mixing at least one lubricating oil with such a composition of associative and exchangeable polymers, and the use of this composition to lubricate a mechanical part.

Compositions are obtained by mixing at least one oligomer A1, which is obtained by copolymerizing at least two monomers functionalized by diol functions with at least one second monomer, with at least one compound A2 having at least two boron ester functions. The compositions exhibit very varied rheological properties depending on the proportion of the compounds A1 and A2 used. A composition is also obtained by mixing at least one lubricating oil with such a composition of associative and exchangeable polymers, and the use of this composition to lubricate a mechanical part.

A curable resin composition, comprising a compound represented by the following general formula (1): ##STR00001##
wherein X is a functional group comprising a reactive group, and R.sup.1 and R.sup.2 each independently represent a hydrogen atom, or an aliphatic hydrocarbon group, aryl group or heterocyclic group that may have a substituent; and at least organometallic compound selected from the group consisting of metal alkoxides and metal chelates.

A curable resin composition, comprising a compound represented by the following general formula (1): ##STR00001##
wherein X is a functional group comprising a reactive group, and R.sup.1 and R.sup.2 each independently represent a hydrogen atom, or an aliphatic hydrocarbon group, aryl group or heterocyclic group that may have a substituent; and at least organometallic compound selected from the group consisting of metal alkoxides and metal chelates.

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.

The present invention relates to a glucose-reactive artificial muscle, and more particularly, to a carbon nanotube, a hydrogel-based glucose-reactive artificial muscle which has a reversible volume change due to variations in glucose concentration, a method of forming the same, a rotary artificial muscle using the same, and a method of detecting glucose. The glucose-reactive artificial muscle according to the present invention may sense variations in glucose concentration with high sensitivity within a short time by providing reversible twisting using the swelling and shrinkage of hydrogels, which occur due to a change in internal anionic charges, caused by the bonding between a boronic acid introduced to the hydrogels and glucose.