There is provided a polyarylene sulfide dispersion coated with a cationic group-containing organic polymer compound and having high dispersion stability and excellent adhesion or adhesiveness to any one of substrates of plastic, metals, glass, and the like even at a high polyarylene sulfide resin concentration. The object is solved by providing a polyarylene sulfide dispersion including polyarylene sulfide particles, which are coated with a cationic group-containing organic polymer compound by a base precipitation method and thus exhibit high stability even at a high concentration, and also providing powder particles (fine particles) produced from the dispersion.

Compositions for inhibiting the attachment of microbes to a biotic or abiotic surface are disclosed. The compositions include a carrier and an effective amount of an anti-adherent agent. The anti-adherent agents include Cyclopentasiloxane (and) Dimethiconol, sodium polystyrene sulfonate, Acrylates/Vinyl Neodecanoate Crosspolymer, Ammonium Acryloyldimethyltaurate/VP Copolymer, Polyquaternium-22, Hydroxypropyl methylcellulose, Polyquaternium-7, Acrylates/Aminoacrylates/C10-30 Alkyl PEG-20 Itaconate Copolymer and combinations thereof. Various delivery vehicles, such as wipes, may be used to deliver the composition to surfaces.

Compositions for inhibiting the attachment of microbes to a biotic or abiotic surface are disclosed. The compositions include a carrier and an effective amount of an anti-adherent agent. The anti-adherent agents include Cyclopentasiloxane (and) Dimethiconol, sodium polystyrene sulfonate, Acrylates/Vinyl Neodecanoate Crosspolymer, Ammonium Acryloyldimethyltaurate/VP Copolymer, Polyquaternium-22, Hydroxypropyl methylcellulose, Polyquaternium-7, Acrylates/Aminoacrylates/C10-30 Alkyl PEG-20 Itaconate Copolymer and combinations thereof. Various delivery vehicles, such as wipes, may be used to deliver the composition to surfaces.

To provide a liquid composition with which a catalyst layer and a polymer electrolyte membrane will hardly be broken at the time of their formation and a method for producing the liquid composition; and a method for producing a membrane/electrode assembly by which a catalyst layer and a polymer electrolyte membrane will hardly be broken at the time of their formation.

A liquid composition comprising a polymer having ion exchange groups, water and an organic solvent, wherein the average secondary particle size of the polymer having ion exchange groups is from 100 to 3,000 nm, and the primary particle size parameter represented by the product of the average primary particle size (nm) and the ion exchange capacity (meq/g dry resin) of the polymer having ion exchange groups, is from 12 to 20.

Provided are a water-dispersible polyester resin having improved water resistance and chemical resistance, a water-dispersion emulsion containing the resin, and a method for preparing the resin. It is possible to minimize the use of organic solvents to be added to a water-dispersible polyester resin to thereby reduce hazard to a human body, does not create odor by excluding a use of amines, and can prepare a water-dispersion emulsion having excellent coating, adhesive property, and water-dispersion stability without using emulsifiers such as surfactants.

A drag reducing composition comprising at least one non-polyalphaolefin polymer having an average particle size in the range of from about 5 to about 800 micrometers. The non-polyalphaolefin polymer can initially be formed via emulsion polymerization. The initial polymer particles can then be at least partially consolidated and then reduced in size and suspended in a carrier fluid. The resulting drag reducing composition can be added to a hydrocarbon-containing fluid to decrease the pressure drop associated with the turbulent flow of the hydrocarbon-containing fluid through a conduit.

A drag reducing composition comprising at least one non-polyalphaolefin polymer having an average particle size in the range of from about 5 to about 800 micrometers. The non-polyalphaolefin polymer can initially be formed via emulsion polymerization. The initial polymer particles can then be at least partially consolidated and then reduced in size and suspended in a carrier fluid. The resulting drag reducing composition can be added to a hydrocarbon-containing fluid to decrease the pressure drop associated with the turbulent flow of the hydrocarbon-containing fluid through a conduit.

Embodiments relate to a waterproof silicone emulsion, a waterproof board exhibiting excellent crack resistance, and a manufacturing method therefor and, more specifically, to a waterproof silicone emulsion including a silicone oil and an emulsifier, a waterproof board including a cured product of an aqueous gypsum slurry, and a manufacturing method therefor. The aqueous gypsum slurry includes calcium sulfate hemihydrate, a silicone oil and a specific catalyst, and exhibits excellent crack resistance and a low total absorptance.

[Problem] To provide a method capable of efficiently mass-producing a polymer solution which is useful for preparation of a resist composition for thick films, which has a high polymer concentration and which contains a plurality of solvents at a desired ratio.

[Solution] A method for producing a polymer solution containing C % by mass of a polymer in a mixed solvent of at least two or more solvents mixed at a predetermined mass ratio, in which an objective polymer solution is produced by estimating the polymer concentration and the solvent composition ratio of a prepolymer solution in which the solvent composition ratio in condensation of a polymer solution containing all the solvents, to an objective concentration C % by mass, is also just a predetermined value, thereby preparing and then condensing the prepolymer solution.

The invention relates to a self-supporting, biodegradable film comprising a C.sub.10-C.sub.22-acylated derivative of hyaluronic acid according to the general formula (I), where R is H.sup.+ or Na.sup.+, and where R.sup.1 is H or C(O)C.sub.xH.sub.y, where x is an integer within the range from 9 to 21 and y is an integer within the range from 11 to 43 and C.sub.xH.sub.y is a linear or branched, saturated or unsaturated C.sub.9-C.sub.21 chain, wherein in at least one repeating unit one or more of R.sup.1 is C(O)C.sub.xH.sub.y and where n is within the range from 12 to 4000; a method of preparation thereof and use thereof.

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