The purpose is to provide a laminate useful as a temporary support for producing a large-area, high-definition flexible electronic device, the laminate having stably low adhesive strength between a colorless and highly transparent polyimide film and an inorganic substrate even in the case of a large surface area and having few blister defects. The laminate that attains the purpose is obtained by initially wetting either one of an inorganic substrate coated with the silane coupling agent and a colorless polyimide film with an aqueous medium, and then laminating while pressing out the aqueous medium.

Embodiments relate to a hard coat laminated film having a first hard coat, a second hard coat, and a transparent resin film layer, where: the first hard coat is formed from paint which contains predetermined amounts of (A) a multifunctional (meth)acrylate, (B) a water repellent, and (C) a silane coupling agent, and which does not contain inorganic particles; and the second hard coat is formed from paint containing predetermined amounts of (D) a polymerizable compound and (E) inorganic fine particles having an average particle size of 1-300 nm. The (D) polymerizable compound contains: (d1) a multifunctional (meth)acrylate having three or more (meth)acryloyl groups in one molecule; (d2) a compound having two or more secondary thiol groups in one molecule; and optionally, (d3) at least one (meth)acrylate selected from the group consisting of a (meth)acrylate having two (meth)acryloyl groups in one molecule, a (meth)acrylate having one (meth)acryloyl group in one molecule, and a urethane(meth)acrylate.

The presently disclosed subject matter generally relates to polymer networks having covalent crosslinks, non-covalent crosslinks, and ionic side groups, and methods of making and using same. Specifically, the disclosed polymer networks can be incorporated into membranes, which can be useful in, for example, electrodialysis. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.

A process of preparing carbon fiber reinforced polymer (CFRP) intermediate products is described wherein the carbon fibers are prepared from a carbon fiber precursor and then in-line impregnated with a polymeric resin as part of a continuous process. The process can provide cost savings compared to processes wherein carbon fibers are prepared and then impregnated with polymeric resins in a separate process, thereby making the use of CFRP materials more economically feasible. Also described is a system for preparing carbon fiber from a carbon fiber precursor and impregnating the carbon fiber with polymeric resin to provide CFRP intermediate products, such as continuous tapes or rods or discontinuous flakes or pellets.

The present teaching relates to photo-responsive hydrogels comprising a copolymer comprising N-isopropylacrylamide (NIPAM), a polymerisable derivative of benzospiropyran, a cross-linking agent and an acid, the acid having a pKa of less than 6, wherein the hydrogel is operably responsive to exposure to water so as to undergo spontaneous protonation and swelling. The photo-responsive hydrogels described can be used in the field of microfluidic platforms.

The invention relates to aqueous polymer dispersions, comprising a water insoluble polymer P in the form of dispersed polymer particles, which is obtainable by free radical aqueous emulsion polymerization of ethylenically unsaturated monomers M, which comprise a) at least one monomer M1 which exhibits two ethylenically unsaturated moieties which are connected by a linker which comprises a disulfide moiety, and b) at least one monoethylenically unsaturated monomer M2, which has a low water solubility. The invention also relates to processes for preparing such an aqueous polymer dispersion, to solid polymer compositions in powder form, obtainable by drying such polymer dispersions, to the use of such polymer dispersions in a coating material, adhesive or sealant and to a methods of coating a surface of a substrate which comprises applying an aqueous coating composition, which contains such an polymer dispersion.

The invention relates to aqueous polymer dispersions, comprising a water insoluble polymer P in the form of dispersed polymer particles, which is obtainable by free radical aqueous emulsion polymerization of ethylenically unsaturated monomers M, which comprise a) at least one monomer M1 which exhibits two ethylenically unsaturated moieties which are connected by a linker which comprises a disulfide moiety, and b) at least one monoethylenically unsaturated monomer M2, which has a low water solubility. The invention also relates to processes for preparing such an aqueous polymer dispersion, to solid polymer compositions in powder form, obtainable by drying such polymer dispersions, to the use of such polymer dispersions in a coating material, adhesive or sealant and to a methods of coating a surface of a substrate which comprises applying an aqueous coating composition, which contains such an polymer dispersion.

A transparent laminate including a transparent substrate and structure layer, wherein the structure layer contains protrusion portions, depression portions, or both on a surface thereof, and an average distance between the adjacent protrusion portions or between the adjacent depression portions is equal to or less than a visible light wavelength, the structure layer includes a polymerized product of an active energy ray curable resin composition, the resin composition includes a composition of a (meth)acryloyl group-containing polymerizable compound, the compound composition includes one or more from each of (A), (B), and (C): (A) a monofunctional (meth)acryloyl group-containing polymerizable compound; (B) alkylene glycol di(meth)acrylate; and (C) trifunctional or higher (meth)acrylate,
the (A) satisfies certain conditions specifying a type and amount of a compound, and a ratio (E′.sub.150/E′.sub.50) of storage elastic modulus E′.sub.150 of the structure layer at 150° C. to storage elastic modulus E′.sub.50 thereof at 50° C. is 0.5 or less.

The purpose of the present invention is to provide: a film having high thermal stability, high bending strength (tensile elongation), small retardation in the thickness direction, a low coefficient of thermal expansion, and high transparency; and a polyamic acid or varnish for obtaining the film. The film satisfies all of requirements (i)-(vi) below. (i) The average value of the coefficient of thermal expansion in the range of 100-200° C. is 35 ppm/K or less. (ii) The absolute value of the retardation in the thickness direction is 200 nm or less per 10 μm of thickness. (iii) The glass transition temperature is 340° C. or higher. (iv) The total light transmittance is at least 85%. (v) The b* value in the L*a*b* color system is 5 or less. (vi) The tensile elongation is at least 10%.

A system for producing an in-situ foam, which comprises the components from 50 to 98% by weight of one or more inorganic fillers A), from 1 to 48% by weight of one or more water-soluble, cationic polymers B), from 0.5 to 48% by weight of one or more surfactants C), from 0.01 to 5% by weight of one or more crosslinkers D) which are capable of reacting with the polymers B), from 0 to 20% by weight of one or more additives E),
where the percentages by weight of the components A) to E) are based on the nonaqueous fraction and the sum of A) to E) is 100% by weight, process for producing an in-situ foam using the components of the system and foaming by means of a gas or a gas mixture and use for thermal insulation and filling of hollow spaces and hollow bodies.