A multi-layer coating includes: a first basecoat layer applied over at least a portion of a substrate; and a second basecoat layer applied over the first basecoat layer. The first basecoat layer and second basecoat layer are formed from compositions having a polyhydrazide and core-shell particles dispersed in aqueous mediums. The core-shell particles of the first basecoat composition includes (1) a polymeric core at least partially encapsulated by (2) a polymeric shell comprising urea linkages, and keto and/or aldo functional groups. The polymeric core of the core-shell particles of the first basecoat composition and the second basecoat composition are each independently covalently bonded to at least a portion of the polymeric shell of the core-shell particles.

Described herein are aqueous binder formulations including organic compounds including acryloyloxy groups and carboxylic acid hydrazides.

Described herein are aqueous binder formulations including organic compounds including acryloyloxy groups and carboxylic acid hydrazides.

Disclosed is a polyurethane for use in a polishing layer, including a carboxylic acid ester group, and a polyurethane preferably having a carboxylic acid ester group in at least one of a side chain, a main chain terminal, and a main chain skeleton is preferably used. Also disclosed is a method for modifying a polishing layer, including the steps of: preparing a polishing layer including a polyurethane having a carboxylic acid ester group; and hydrolyzing the carboxylic acid ester group of the polyurethane, to produce a carboxyl group.

A coating composition is prepared from an aqueous dispersion of a mixture of (i) urethane acrylate resin particles; (ii) acrylic resin particles; and (iii) a matting agent. A method of imparting stain resistance to a substrate, comprising applying the coating composition to at least a portion of the substrate.

A coating composition is prepared from an aqueous dispersion of a mixture of (i) urethane acrylate resin particles; (ii) acrylic resin particles; and (iii) a matting agent. A method of imparting stain resistance to a substrate, comprising applying the coating composition to at least a portion of the substrate.

A process for preparing a polymeric membrane for soil materials used in crop production comprising providing an aqueous dispersion of polyurethane and spraying the aqueous dispersion onto soil materials to be used in crop production to form a polymeric membrane.

The present invention relates to an aqueous polyurethane-urea dispersion and a preparation process thereof, an adhesive containing the same, and an adhesion article obtained by adhering with said adhesive. The aqueous polyurethane-urea dispersion comprises a polyurethane-urea dispersed therein, said polyurethane-urea is obtained from a reaction of a system comprising the following components: a polyisocyanate mixture; a polyester polyol having a melting temperature of greater than 32° C., wherein the melting temperature is measured by using a DSC-7 from Perkin-Elmer at 20-100° C. according to DIN 65467, and taken from the first temperature-rising curve; an emulsifier; an optional monohydroxy polyether and an optional diamine; the polyisocyanate mixture contains hexamethylene diisocyanate and dicyclohexylmethane diisocyanate, the amount of hexamethylene diisocyanate is 0.01 wt %-25 wt %, the amount of dicyclohexylmethane diisocyanate is 0.01 wt %-6 wt %, based on the amount of the system as 100 wt %. The adhesive containing the aqueous polyurethane-urea dispersion of the present invention has a low activation temperature and a good mechanical property.

A method is disclosed for producing a polyurethane film including the steps of depositing a prepolymer composition, drying the prepolymer composition, and crosslinking the propolymer composition.

Provided are an aqueous polyurethane dispersion and a coating agent including the same, which can produce a coating film with excellent balance of various physical properties and especially excellent self-restoring properties. It is the aqueous polyurethane dispersion in which a polyurethane (C) obtained by reacting a urethane prepolymer (A) obtained by reacting a polyisocyanate (a), a polyol (b), and a hydrophilic group-containing polyol (c) with a chain extender (B) is dispersed in water, the urethane prepolymer (A) having a weight average molecular weight of 2,000 or more and 30,000 or less, the polyurethane (C) having a degree of crosslinking of 0.03 mol/kg or more and 0.15 mol/kg or less, the polyurethane (C) having a urea content of 0.5 mol/kg or less.