The present embodiments relate to an antifouling article comprising polyurethane and medetomidine, or an enantiomer or salt thereof, from 0.1% by weight of the antifouling article and present in a polymer matrix of the polyurethane.

The present embodiments relate to an antifouling article comprising polyurethane and medetomidine, or an enantiomer or salt thereof, from 0.1% by weight of the antifouling article and present in a polymer matrix of the polyurethane.

This invention relates to a multi-part kit system to repair damaged products used in industrial applications, comprising a part A which comprises A1) MDI prepolymer, A2) fumed silica and A3) plasticizer; a part B which comprises B1) hydroquinone di-(2-hydroxyethyl)ether and B2) plasticizer; and a part C which comprises C1) polyol, C2) optionally catalyst and C3) optionally plasticizer.

This invention relates to a multi-part kit system to repair damaged products used in industrial applications, comprising a part A which comprises A1) MDI prepolymer, A2) fumed silica and A3) plasticizer; a part B which comprises B1) hydroquinone di-(2-hydroxyethyl)ether and B2) plasticizer; and a part C which comprises C1) polyol, C2) optionally catalyst and C3) optionally plasticizer.

The present invention relates to a polyurethane composition with antimicrobial properties, a polyurethane foam or coating comprising said polyurethane composition, an article prepared from said composition, foam or coating, a process for the preparation of said composition, the use of a complexing agent and an antimicrobial agent for the preparation of said composition or for imparting antimicrobial properties to a polyurethane composition, and a kit of components for preparing said composition. A cooperative effect is observed when specific complexing agents are combined with specific organic antimicrobially active components within the polyurethane composition.

The present invention relates to a polyurethane composition with antimicrobial properties, a polyurethane foam or coating comprising said polyurethane composition, an article prepared from said composition, foam or coating, a process for the preparation of said composition, the use of a complexing agent and an antimicrobial agent for the preparation of said composition or for imparting antimicrobial properties to a polyurethane composition, and a kit of components for preparing said composition. A cooperative effect is observed when specific complexing agents are combined with specific organic antimicrobially active components within the polyurethane composition.

A polypyrrole-graphene/polyurethane antifouling coating as well as a preparation method and an application thereof are provided. The polypyrrole-graphene/polyurethane antifouling coating includes component A and component B, wherein the component A mainly includes the following raw materials in parts by weight: 500 parts of group-hydrolyzable polyurethane prepolymer, 25-50 parts of bentonite, 25-50 parts of titanium dioxide, 60-120 parts of zinc oxide, 15-30 parts of talcum powder, and 15-30 parts of polypyrrole-graphene nanofiller; and the component B mainly includes the following raw materials in parts by weight: 5-7 parts of leveling agent, 5-7 parts of defoamer, 6-15 parts of chain extender, 10-25 parts of silane coupling agent, and 1-2 parts of catalyst. The two-component polyurethane coating of the present invention has relatively good adhesion, collision resistance and cracking resistance, and the antifouling property and the antifouling durability can be improved.

A polypyrrole-graphene/polyurethane antifouling coating as well as a preparation method and an application thereof are provided. The polypyrrole-graphene/polyurethane antifouling coating includes component A and component B, wherein the component A mainly includes the following raw materials in parts by weight: 500 parts of group-hydrolyzable polyurethane prepolymer, 25-50 parts of bentonite, 25-50 parts of titanium dioxide, 60-120 parts of zinc oxide, 15-30 parts of talcum powder, and 15-30 parts of polypyrrole-graphene nanofiller; and the component B mainly includes the following raw materials in parts by weight: 5-7 parts of leveling agent, 5-7 parts of defoamer, 6-15 parts of chain extender, 10-25 parts of silane coupling agent, and 1-2 parts of catalyst. The two-component polyurethane coating of the present invention has relatively good adhesion, collision resistance and cracking resistance, and the antifouling property and the antifouling durability can be improved.

An object to be achieved by the present invention is to provide a method for producing an artificial leather on a practically usable level without using an organic solvent and without requiring a crosslinking step for a crosslinking agent. The present invention provides a method for producing an artificial leather having a cured product layer of a moisture-curing urethane hot-melt resin composition, wherein the moisture-curing urethane hot-melt resin composition contains a urethane prepolymer having an isocyanate group and does not contain a crosslinking agent having a hydroxyl group and/or an amino group, the method including applying the moisture-curing urethane hot-melt resin composition to a substrate at a coating weight of 0.03 to 0.5 kg/m.sup.2 so as to form a cured product layer of the moisture-curing urethane hot-melt resin composition.

An object to be achieved by the present invention is to provide a method for producing an artificial leather on a practically usable level without using an organic solvent and without requiring a crosslinking step for a crosslinking agent. The present invention provides a method for producing an artificial leather having a cured product layer of a moisture-curing urethane hot-melt resin composition, wherein the moisture-curing urethane hot-melt resin composition contains a urethane prepolymer having an isocyanate group and does not contain a crosslinking agent having a hydroxyl group and/or an amino group, the method including applying the moisture-curing urethane hot-melt resin composition to a substrate at a coating weight of 0.03 to 0.5 kg/m.sup.2 so as to form a cured product layer of the moisture-curing urethane hot-melt resin composition.