Disclosed herein are, for instance, coated substrates comprising cellulose-based substrates with surface-treated aqueous-based polymer coatings. In some embodiments, the aqueous-based polymer coatings are surface-treated using corona treatment. Methods of making and using the same are also disclosed.

A double network hydrogel consists of a first network and a second network, where the first network is, or includes, a first polymer that is formed, at least in part, of —CH.sub.2—CH(OH)— units, and the second network is, or includes, a second polymer that is formed, at least in part, of carboxyl (COOH)-containing units or salts thereof, sulfonyl (SO.sub.3H)-containing units or salts thereof, and at least one of hydroxyl (OH)-containing units or amino (NH.sub.2)-containing units, where the hydrogel may be used as a cartilage replacement.

The present invention provides a coating fluid for forming a gas barrier layer, the coating fluid including; a liquid medium containing water; and a resin having at least one type of functional group selected from the group consisting of a hydroxy group, a carboxy group, an amino group, and a sulfo group, in which an average particle size of the resin is 100 to 600 nm.

The invention is related to a cost-effective method for making a silicone hydrogel contact lens having a crosslinked hydrophilic coating thereon. A method of the invention involves heating a silicone hydrogel contact lens in an aqueous solution in the presence of a water-soluble, highly branched, thermally-crosslinkable hydrophilic polymeric material having positively-charged azetidinium groups, to and at a temperature from about 40° C. to about 140° C. for a period of time sufficient to covalently attach the thermally-crosslinkable hydrophilic polymeric material onto the surface of the silicone hydrogel contact lens through covalent linkages each formed between one azetidinium group and one of the reactive functional groups on and/or near the surface of the silicone hydrogel contact lens, thereby forming a crosslinked hydrophilic coating on the silicone hydrogel contact lens. Such method can be advantageously implemented directly in a sealed lens package during autoclave.

Methods of forming crosslinked cellulose include mixing a crosslinking agent with an aqueous mixture of cellulose fibers containing little to no excess water (e.g., solids content of 25-55%), drying the resulting mixture to 85-100% solids, then curing the dried mixture to crosslink the cellulose fibers. Systems include a mixing unit to form, from an aqueous mixture of unbonded cellulose fibers having a solids content of about 25-55% and a crosslinking agent, a substantially homogenous mixture of non-crosslinked, unbonded cellulose fibers and crosslinking agent; a drying unit to dry the substantially homogenous mixture to a consistency of 85-100%; and a curing unit and to cure the crosslinking agent to form dried and cured crosslinked cellulose fibers. Intrafiber crosslinked cellulose pulp fibers produced by such methods and/or systems have a chemical on pulp level of about 2-14% and an AFAQ capacity of at least 12.0 g/g.

A film for use in a packaging structure, comprising a coating on the film surface which comprises a binder and a particulate protuberant component able to remove a volatile organic compound from an environment in contact with the film in the packaging structure. Also provided is a packaging structure comprising such a film and a package which comprises the packaging structure.

Provided are a superabsorbent polymer and a preparation method thereof. According to the present invention, a superabsorbent polymer having high centrifuge retention capacity and absorption rate may be prepared by using a specific foam stabilizer.

A coating material for a gas barrier includes polycarboxylic acid, a polyamine compound, a polyvalent metal compound, and a base, in which (molar number of —COO— groups included in the polycarboxylic acid)/(molar number of amino groups included in the polyamine compound)=100/20 to 100/90.

The method for priming silicone joints on windows, doors, glazing areas, sanitary facilities and the like is carried out using a mixture consisting of an impregnating agent, a lacquer and water or without water for priming silicone surfaces, wherein the mixture is produced from the components only immediately before use, wherein the impregnating agent contains an acid, is anhydrous and is a silicon dioxide precursor which hydrolyzes to form silicon dioxide particles in the acidic environment in the presence of water, and wherein the lacquer is a water-dilutable dispersion lacquer paint.

A barrier film. The barrier film may include a substrate, an inorganic layer disposed on a side of the substrate, and an organic layer-by-layer structure disposed on a side of the inorganic layer, where in the organic layer-by-layer structure comprises a layer of a cationic polyelectrolyte and a layer of an anionic polyelectrolyte.