Chemically anchoring long-chain polymer networks of tough hydrogels on solid surfaces can represent a general strategy to design tough and functional bonding between hydrogels and solid materials, achieving interfacial toughness over 1000 Jm.sup.−2.

Chemically anchoring long-chain polymer networks of tough hydrogels on solid surfaces can represent a general strategy to design tough and functional bonding between hydrogels and solid materials, achieving interfacial toughness over 1000 Jm.sup.−2.

An aqueous liquid composition contains a water-based medium containing water, chitosan and/or a chitosan derivative, and a polymeric acid, and has a pH of not higher than 4.5. The aqueous liquid composition contains low-cost materials having low environmental load, can retain adequate viscosity even when stored over a long term, and can form a functional coating film having excellent adhesiveness to a base material and superb durability, solvent resistance and waterproofness and capable of exhibiting various functions led by electrical conductivity and hydrophilicity.

An aqueous liquid composition contains a water-based medium containing water, chitosan and/or a chitosan derivative, and a polymeric acid, and has a pH of not higher than 4.5. The aqueous liquid composition contains low-cost materials having low environmental load, can retain adequate viscosity even when stored over a long term, and can form a functional coating film having excellent adhesiveness to a base material and superb durability, solvent resistance and waterproofness and capable of exhibiting various functions led by electrical conductivity and hydrophilicity.

This invention relates to a coating composition, especially, relates to an aqueous coating composition with improved viscosity stability.

This invention relates to a coating composition, especially, relates to an aqueous coating composition with improved viscosity stability.

The present invention concerns a two-part sizing composition comprising: (A) A precursor comprising: (a) An aminosilane (e.g. A1100) and (b) a polymer or copolymer containing carboxylic acid and/or anhydride, both having a functionality, F≧3, and (B) A binder comprising a multi-functional epoxy resin of functionality, F≧3. Glass fibres sized with the reaction product of the above composition yield a higher resistance to hydrolysis of polymeric matrix composite materials reinforced with such fibres. The sizing composition of the present invention is particularly advantageous for use with polyester resins, such as PET.

A curable composition contains a betaine monomer having a predetermined structure and a polyfunctional (meth)acrylamide compound having a predetermined structure.

Provided is a dope used when a film containing an acrylic-based resin and a core-shell type graft copolymer is made by a solution casting method, in which turbidity is less likely to occur despite the use of a core-shell type graft copolymer having a core layer with a large particle diameter. A dope for producing a film by a solution casting method contains a thermoplastic acrylic-based resin, a graft copolymer, and a solvent. In this dope, the graft copolymer has a core layer and a shell layer, the core layer has an average particle diameter of 125 to 400 nm, the graft copolymer has a degree of swelling by methyl ethyl ketone of 3.5 or more, and the solvent has a hydrogen bonding term δH in a Hansen solubility parameter of 6.0 or more and 8.0 or less.

Provided is a dope used when a film containing an acrylic-based resin and a core-shell type graft copolymer is made by a solution casting method, in which turbidity is less likely to occur despite the use of a core-shell type graft copolymer having a core layer with a large particle diameter. A dope for producing a film by a solution casting method contains a thermoplastic acrylic-based resin, a graft copolymer, and a solvent. In this dope, the graft copolymer has a core layer and a shell layer, the core layer has an average particle diameter of 125 to 400 nm, the graft copolymer has a degree of swelling by methyl ethyl ketone of 3.5 or more, and the solvent has a hydrogen bonding term δH in a Hansen solubility parameter of 6.0 or more and 8.0 or less.