Polyurethane material for indicating pH at a locus, preferably as indication of presence of microbes, comprising a polyurethane network having immobilised therein one or more hydrophilic copolymers, the or each said copolymer comprising:

hydrophilic monomer; and
indicating monomer, which provides an indication in response to a change in hydrophilic state of said hydrophilic monomer and/or copolymer;
characterised in that the or each copolymer further comprises one or a plurality of ionisable groups or moieties or polymerisable monomers having one or more characteristic pKa values in the range 5 to 10 and which are responsive to pH at the locus in the range pH 5 to pH 10
and in that hydrophilic state of hydrophilic copolymer is dependent on ionisation of said ionisable groups, moieties or monomers; kit and device comprising the material and process for preparation thereof; and use in detecting or sensing microbes or pH.

The composite anion exchange membrane includes: a surface layer on a single surface or both surfaces of an anion exchange membrane substrate, in which the above-described surface layer contains a copolymer of a monomer A which is a water-soluble polyfunctional monomer and a monomer B which is a cationic monomer, an anion exchange capacity of the above-described surface layer is 0.05 meq/cm.sup.3 to 0.50 meq/cm.sup.3, and an anion exchange capacity of the above-described anion exchange membrane substrate is 1.0 meq/cm.sup.3 to 5.0 meq/cm.sup.3.

A thermally expandable composition, including (a) at least one polymer P, cross-linkable by a free-radical initiator, and (b) at least one solid butyl rubber BRu, and (c) at least one free-radical initiator, and (d) at least one blowing agent, and (e) at least one tackifier TA, whereby the cured expanded composition has a volume increase compared to the uncured composition of less than 1300%. The thermally expandable composition is able to provide good expansion behaviour and good adhesion on metal surfaces and is especially suitable for baffle and/or reinforcement elements, e.g. in automotive manufacturing.

A hardcoat film includes: a substrate; and a hardcoat layer, in which the hardcoat film satisfies the following Formulas (i) and (ii), (i) E′.sub.(0.4)HC×d.sub.HC≥8,000 MPa.Math.μm, (ii) E′.sub.(4)HC×d.sub.HC≤4,000 MPa.Math.μm, E′.sub.(0.4)HC is an elastic modulus of the hardcoat layer obtained in a case where an elongation rate is 0.4%, E′.sub.(4)HC is an elastic modulus of the hardcoat layer obtained in a case where an elongation rate is 4%, and d.sub.HC is a film thickness of the hardcoat layer.

Provided are a resin composition including a coloring material, a resin, and a solvent, in which, in a case where a film having a thickness of 0.60 μm is formed by heating the resin composition at 200° C. for 30 minutes, a thickness of the film after performing a heating treatment of the film at 300° C. for 5 hours in a nitrogen atmosphere is 70% or more of a thickness of the film before the heating treatment; a film formed of the resin composition; a color filter; a solid-state imaging element; and an image display device.

The present disclosure relates to a method for reducing or preventing colloids adhesion and/or fouling on a substrate in need thereof by forming a coating having a first layer that includes a polyphenol compound, and a second layer that includes a hydrophilic polymer having repeating units derived from one or more zwitterionic monomers, typically one or more betaine monomers, on the substrate. The present disclosure also relates to the coating made thereby and an article having the said coating.

Methods and materials used for production of constructs having a porous open or semi-open celled structure. Constructs may include a porous matrix as a base and a biocompatible conformal coating thereon.

A soil-resistant transfer sheet which includes, in the following order, a substrate sheet (a), a soil-resistant layer (b), a coating layer (c), and optionally an adhesive layer (d), wherein a surface of the soil-resistant layer, which reveals after the substrate sheet (a) is removed, has a contact angle with water of 100° or larger and a contact angle with hexadecane of 40° or larger; a process for producing a molded resin by in-mold labeling using the transfer sheet. The soil-resistant layer (b) is a layer obtained from a soil-resistant composition, and the coating layer (c) is a layer obtained from a polymerizable coating composition. The soil-resistant composition especially preferably is a perfluoropolyether urethane acrylate composition. Also disclosed is a process for producing the soil-resistant transfer sheet.

A prepreg includes a fiber base material and a thermosetting resin composition impregnated into the fiber base material. The thermosetting resin composition contains a thermosetting resin including an epoxy resin; a curing agent; an inorganic filler; and an acrylic acid ester copolymer having a weight average molecular weight of 10×10.sup.4 or more and less than 45×10.sup.4. A content of the inorganic filler is 150 parts by mass or more relative to a total of 100 parts by mass of the thermosetting resin and the curing agent. A content of the acrylic acid ester copolymer is more than 30 parts by mass and 90 parts by mass or less relative to the total of 100 parts by mass of the thermosetting resin and the curing agent.

A curable composition includes (i) an acrylic functional silicone material; (ii) an acrylic functional organic material; (iii) an acrylic functional urethane material; and optionally (iv) metal oxide particles. Upon curing, the compositions provide a coating that may exhibit good optical clarity, adhesion to various plastics, and good antifog performance.