Provided is a process for reducing the size of ethylcellulose polymer particles comprising (a) providing a slurry comprising (i) water (ii) said ethylcellulose particles, wherein said ethylcellulose polymer particles have D50 of 100 μm or less; (iii) surfactant comprising 1.2% or more anionic surfactants by weight based on the solid weight of said slurry, with the proviso that if the amount of anionic surfactant is 2.5% or less by weight based on the solid weight of said slurry, then said surfactant further comprises 5% or more stabilizers by weight based on the solid weight of said slurry, wherein said stabilizer is selected from the group consisting of water-soluble polymers, water-soluble fatty alcohols, and mixtures thereof. (b) grinding said slurry in an agitated media mill having a collection of media particles having a median particle size of 550 μm or smaller. Also provided is a dispersion made by such a process.

The invention relates to a method for the preparation of a polymer hydrogel, comprising cross-linking a precursor comprising a hydrophilic polymer optionally in combination with a second hydrophilic polymer, using a polycarboxylic acid as the cross-linking agent. The invention further concerns the polymer hydrogel obtainable by the method of the invention and the use thereof in a number of different applications.

A method for stabilization of collagen matrices and of condensation of natural and synthetic polymers that uses 2-halo-4,6-dialkoxy-1,3,5-triazines in the presence of one or more amines as activating agents for reactions of crosslinking, condensation, grafting, and curing of collagen matrices, cellu lose, modified celluloses, polysaccharides, acid unsaturated polymers, and chiral and non-chiral amines, etc. Forming an integral part of the present invention is also the method for production on an industrial scale of 2-halo-4,6-dialkoxy-1,3,5-triazines.

A method of bonding together surfaces of two or more elements. The method includes the steps of providing two or more elements, applying an adhesive to one or more of the surfaces to be bonded together before, during or after contacting the surfaces to be bonded together with each other, and curing the adhesive, wherein the adhesive comprises at least one hydrocolloid.

The invention relates to an aqueous binder composition for mineral fibers comprising at least one polyelectrolytic hydrocolloid.

Disclosed herein are a simultaneous co-casting process for preparing a multilayer water-soluble film, multilayer films prepared by a simultaneous co-casting process, multilayer films including a foamed layer, methods of making thereof, related articles made therefrom, and related uses thereof.

A method for producing resin beads providing various types of products, such as cosmetics, imparted with superior tactile impression, spreadability on skin, transparency, and product stability is provided. The resin beads containing a cellulose derivative as a main component can replace resin particles composed of a synthetic material derived from petroleum. The production method includes: preparing a suspension containing oil droplets containing the cellulose derivative and an organic solvent by mixing an oil phase containing the cellulose derivative and an organic solvent dissolving the cellulose derivative and having a water-solubility of 0.1 to 50.0 g, with an aqueous phase containing a dispersion stabilizer; and contracting the oil droplets by adding water to the suspension, satisfying expression (A) below as defined in the specification, until a content of the organic solvent in the suspension becomes equal to or less than the water-solubility of the organic solvent: (W/S)/T≤1.00 . . . (A).

An absorbent composition containing cellulose nanofibers and a water-soluble polymer and having a specific surface area of at least 1.0 m.sup.2/g and a method for producing the same. The water-soluble polymer is preferably a cellulose derivative or its salt. The cellulose derivative preferably has a degree of etherification of 1.0 or lower. The absorbent composition is preferably produced by mixing cellulose nanofibers and the water-soluble polymer in a liquid and freeze-drying the resulting mixed solution.

A method of reducing or limiting tissue adhesion comprises contacting the tissue with an effective amount of a hydrogel composition comprising: 2% to 6% by weight hyaluronan, and 3% to 18% by weight methylcellulose, wherein the combined total amount of hyaluronan and methylcellulose in the hydrogel is between 8 and 24% by weight; and wherein the ratio of hyaluronan:methylcellulose is between 1:1 and 1:5 w/w. The hydrogel composition and may be used to reduce or limit tissue adhesion that is correlated with surgery, and may be used in surgeries wherein the surgery is performed through a small incision or opening.

The disclosure provides a very simple and convenient method for producing a porous material of a water-soluble polymer. The herein disclosed method for producing a porous material of a water-soluble polymer includes a step of preparing an emulsion containing a water-soluble polymer, water, and a dispersoid, wherein the water-soluble polymer is dissolved and the dispersoid is dispersed in the emulsion, and a step of evaporating and thereby removing the water and the dispersoid from the emulsion. The boiling point of the dispersoid is higher than the boiling point of water. The solubility of the water-soluble polymer in the dispersoid is lower than the solubility of the water-soluble polymer in water.