The present invention provides an aqueous polymer dispersion and an aqueous coating composition comprising such aqueous polymer dispersion and providing coatings with improved early water blister resistance as well as satisfactory water streaking resistance and good durability properties.

The present invention provides an aqueous polymer dispersion and an aqueous coating composition comprising such aqueous polymer dispersion and providing coatings with improved early water blister resistance as well as satisfactory water streaking resistance and good durability properties.

An object is to obtain a composition capable of: forming a uniform film even by spray coating or even when the composition is applied in the form of ink for inkjet printing; and preventing light emission from a portion other than an ITO electrode surface when the film is mounted on an organic EL device and light is emitted from the device. A conductive polymer composition contains: a composite containing a π-conjugated polymer (A) and a polymer (B) shown by a general formula (1); H.sub.2O (D) for dispersing the composite; a water-soluble organic solvent (C); and a compound (E) shown by a general formula (2). The electric conductivity of a film with a thickness of 20 to 200 nm formed from the conductive polymer composition is less than 1.00E-05 S/cm.

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An object is to obtain a composition capable of: forming a uniform film even by spray coating or even when the composition is applied in the form of ink for inkjet printing; and preventing light emission from a portion other than an ITO electrode surface when the film is mounted on an organic EL device and light is emitted from the device. A conductive polymer composition contains: a composite containing a π-conjugated polymer (A) and a polymer (B) shown by a general formula (1); H.sub.2O (D) for dispersing the composite; a water-soluble organic solvent (C); and a compound (E) shown by a general formula (2). The electric conductivity of a film with a thickness of 20 to 200 nm formed from the conductive polymer composition is less than 1.00E-05 S/cm.

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Provided is a pressure-sensitive adhesive (PSA) sheet including a PSA layer that exhibits improved water resistance. The PSA sheet provided by the present invention includes a PSA layer formed from a water-dispersed PSA composition containing an acrylic polymer as a base polymer, a water-dispersed tackifier resin, and at least any one type of Na ions and K ions. The total amount of Na ions and K ions in the PSA sheet is 0.3 part by weight or more to 0.8 part by weight or less per 100 parts by weight of the PSA sheet.

Provided is a pressure-sensitive adhesive (PSA) sheet including a PSA layer that exhibits improved water resistance. The PSA sheet provided by the present invention includes a PSA layer formed from a water-dispersed PSA composition containing an acrylic polymer as a base polymer, a water-dispersed tackifier resin, and at least any one type of Na ions and K ions. The total amount of Na ions and K ions in the PSA sheet is 0.3 part by weight or more to 0.8 part by weight or less per 100 parts by weight of the PSA sheet.

Disclosed is an uncoated passenger contact component including a self-sanitizing polymer composition.

A bio-electrode composition includes (A) an ionic material and (B) a lithium titanate powder. The component (A) is a polymer compound containing a repeating unit-a having a structure selected from an ammonium salt, a sodium salt, a potassium salt, and a silver salt of any of fluorosulfonic acid, fluorosulfonimide, and N-carbonyl-fluorosulfonamide. Thus, the present invention provides a bio-electrode composition capable of forming a living body contact layer for a bio-electrode that is excellent in electric conductivity and biocompatibility, is light-weight, can be manufactured at low cost, and can control significant reduction in the electric conductivity even when the bio-electrode is wetted with water or dried; a bio-electrode including a living body contact layer formed of the bio-electrode composition; and a method for manufacturing the bio-electrode.

The object of the invention is to provide a novel olefin-based molded product useful for various applications.

An olefin-based molded product comprising a polymer including a structural unit of at least one polar olefin monomer represented by the general formula (I) CH2=CH—R.sup.2—Z(R.sup.1)n is provided. In the formula, Z is a hetero atom selected from the group consisting of nitrogen, oxygen, phosphorus, sulfur, and selenium; R.sup.1 is a substituted or unsubstituted hydrocarbyl group having 1 to 30 carbon atoms; n is an integer of 1 or 2 depending on the atomic species of Z; and R.sup.2 is a substituted or unsubstituted hydrocarbylene group having 2 to 20 carbon atoms.

Methods for forming latexes are provided. In embodiments, such a method comprises adding a first portion of a monomer emulsion comprising water, a monomer, an acidic monomer, a multifunctional monomer, and a first reactive surfactant to a reactive surfactant solution comprising water and a second reactive surfactant to form a reaction mixture, wherein the reactive surfactant solution does not comprise monomers other than the second reactive surfactant; adding a first portion of an initiator solution to the reaction mixture so that monomers undergo polymerization reactions to form resin seeds in the reaction mixture; adding a second portion of the monomer emulsion to the reaction mixture comprising the resin seeds; and adding a second portion of the initiator solution to the reaction mixture to form a latex comprising resin particles.