The present disclosure sets forth ink compositions having a biodegradable polyurethane binder that can be used for textile printing. In one example, an ink composition can include water, an organic co-solvent, a colorant, and a biodegradable polyurethane binder. The biodegradable polyurethane binder can include prepolymer segments including polymerized monomers of a diisocyanate and a diol. The diol can include to terminal 6-hydroxyhexanoate groups linked by an organic linking group. Chain extenders can connect the prepolymer segments. The chain extenders can include a polymerized diamine.

A multi-component resin system can be used for producing a mortar composition based on isocyanate amine adducts for the chemical fastening of construction elements. A mortar composition based on isocyanate amine adducts can be produced from the multi-component resin system. A method can be used for the chemical fastening of construction elements in mineral substrates with the mortar composition based on the isocyanate amine adducts.

A graft polyurethane copolymer dispersion can include dispersed polyurethane particles including a graft polyurethane copolymer. The graft polyurethane copolymer in this example includes a polyurethane backbone, a graft side-chain polymer attached to the polyurethane backbone, sulfonic acid groups, and isocyanate-generated amines. The graft side-chain polymer can include a poly(meth)acrylic moieties with C1 to C12 alkyl pendant groups, polyalkylene oxide pendant groups, or a combination thereof.

A graft polyurethane copolymer dispersion can include dispersed polyurethane particles including a graft polyurethane copolymer. The graft polyurethane copolymer in this example includes a polyurethane backbone, a graft side-chain polymer attached to the polyurethane backbone, sulfonic acid groups, and isocyanate-generated amines. The graft side-chain polymer can include a poly(meth)acrylic moieties with C1 to C12 alkyl pendant groups, polyalkylene oxide pendant groups, or a combination thereof.

A composite polyurethane condom and a preparation method thereof. The composite polyurethane condom includes a first substrate layer, an adhesive layer formed on the first substrate layer, and a second substrate layer formed on the adhesive layer. A special adhesive layer is added between the two layers of materials, so that, for example, two materials with different polarities can be firmly attached together without delamination.

A composite polyurethane condom and a preparation method thereof. The composite polyurethane condom includes a first substrate layer, an adhesive layer formed on the first substrate layer, and a second substrate layer formed on the adhesive layer. A special adhesive layer is added between the two layers of materials, so that, for example, two materials with different polarities can be firmly attached together without delamination.

A water-based polyurethane resin and a method for manufacturing the same are provided. The method for manufacturing the water-based polyurethane includes: a preparation step of a prepolymer, a dilution step of the prepolymer, a water dispersion and chain extension step, and an acrylic synthesis step. The method further includes mixing polyol and polyisocyanate to obtain a prepolymer, and diluting the prepolymer by adding acrylic monomer in the prepolymer. In the water-based polyurethane resin, at least one of the polyhydric alcohol, polyisocyanate, and the acrylic monomer includes a compound with a cyclic structure.

A water-based polyurethane resin and a method for manufacturing the same are provided. The method for manufacturing the water-based polyurethane includes: a preparation step of a prepolymer, a dilution step of the prepolymer, a water dispersion and chain extension step, and an acrylic synthesis step. The method further includes mixing polyol and polyisocyanate to obtain a prepolymer, and diluting the prepolymer by adding acrylic monomer in the prepolymer. In the water-based polyurethane resin, at least one of the polyhydric alcohol, polyisocyanate, and the acrylic monomer includes a compound with a cyclic structure.

Disclosed are devices for determining an analyte concentration (e.g., glucose). The devices comprise a sensor configured to generate a signal associated with a concentration of an analyte and a sensing membrane located over the sensor. The sensing membrane comprises an enzyme layer, wherein the enzyme layer comprises an enzyme and a polymer comprising polyurethane and/or polyurea segments and one or more zwitterionic repeating units. The enzyme layer protects the enzyme and prevents it from leaching from the sensing membrane into a host or deactivating.

The invention relates to innovative, water-dispersible, hydrophilic polyisocyanates and polyisocyanate mixtures, to a process for preparing them, to compositions comprising the hydrophilic polyisocyanates of the invention, and to their use as a starting component in the production of polyurethane plastics, more particularly as crosslinkers for water-soluble or water-dispersible film-forming, adhesives or sealant binders or binder components having groups which are reactive towards isocyanate groups.