The use of an aqueous polyurethane dispersion adhesive is described for producing composite foils which are biodisintegratable at home compost conditions where at least two substrates are adhesive-bonded to one another with use of the polyurethane dispersion adhesive, where at least one of the substrates is a polymer foil which is biodisintegratable at home compost conditions. At least 60% by weight of the polyurethane is composed of diisocyanates, polyesterdiols, and at least one bifunctional carboxylic acid selected from dihydroxy carboxylic acids and diamino carboxylic acids, wherein the polyurethane has no melting point above 20° C. or wherein the polyurethane has a melting point above 20° C. with an enthalpy of fusion lower than 10 J/g, and wherein a film of the polyurethane adhesive is biodegradable at home compost conditions.

The present invention relates to a modified polyurethane prepolymer, a two-component polyurethane adhesive and the preparation method thereof. The modified polyurethane prepolymer is prepared from the raw materials comprising the following components: polyurethane prepolymer and graphene oxide; wherein, the polyurethane prepolymer is prepared from the raw materials comprising the following components: copolymer containing ureidopyrimidinone groups and aliphatic isocyanate; wherein, the copolymer containing ureidopyrimidinone groups is formed by copolymerization of the raw materials comprising the following components: alkyl acrylate ureidopyrimidinone, and hydroxyethyl alkyl acrylate; wherein, the alkyl acrylate ureidopyrimidinone has the structure shown in Formula (I); and the hydroxyethyl alkyl acrylate has the structure shown in Formula (II). The two-component polyurethane adhesive containing the modified polyurethane prepolymer has excellent mechanical properties and aging resistance simultaneously.

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A moisture-permeable waterproof fabric includes: a cloth (i), an adhesive layer (ii), and a surface skin layer (iii). The adhesive layer (ii) is formed from a moisture-curable polyurethane hot melt resin composition that contains a urethane prepolymer (C) having an isocyanate group, and the urethane prepolymer (C) is a reaction product of a polyisocyanate (B) and a polyol (A) containing a biomass-derived polyester polyol (a1). The surface skin layer (iii) is formed from a urethane resin composition that contains a urethane resin (R) containing a polyol (P) and a polyisocyanate (Q) as essential raw materials thereof, and the polyol (P) contains a polyol (P1) having an oxyethylene group and a specific polyester polyol (P2).

A moisture-permeable waterproof fabric includes: a cloth (i), an adhesive layer (ii), and a surface skin layer (iii). The adhesive layer (ii) is formed from a moisture-curable polyurethane hot melt resin composition that contains a urethane prepolymer (C) having an isocyanate group, and the urethane prepolymer (C) is a reaction product of a polyisocyanate (B) and a polyol (A) containing a biomass-derived polyester polyol (a1). The surface skin layer (iii) is formed from a urethane resin composition that contains a urethane resin (R) containing a polyol (P) and a polyisocyanate (Q) as essential raw materials thereof, and the polyol (P) contains a polyol (P1) having an oxyethylene group and a specific polyester polyol (P2).

An object of the invention is to provide a moisture-curable polyurethane resin composition containing a biomass raw material and having excellent adhesiveness to a fabric (particularly, a water-repellent fabric) and excellent film strength. The invention provides a moisture-curable polyurethane hot-melt resin composition containing: a urethane prepolymer (i) having an isocyanate group, which is a reaction product of a polyol (A) and a polyisocyanate (B), the polyol (A) containing a polyester polyol (a1) containing, as raw materials, a biomass-derived polybasic acid (x) and a biomass-derived glycol (y), and another polyester polyol (a2). In addition, the invention provides an adhesive containing the moisture-curable polyurethane hot-melt resin composition.

An object of the invention is to provide a moisture-curable polyurethane resin composition containing a biomass raw material and having excellent adhesiveness to a fabric (particularly, a water-repellent fabric) and excellent film strength. The invention provides a moisture-curable polyurethane hot-melt resin composition containing: a urethane prepolymer (i) having an isocyanate group, which is a reaction product of a polyol (A) and a polyisocyanate (B), the polyol (A) containing a polyester polyol (a1) containing, as raw materials, a biomass-derived polybasic acid (x) and a biomass-derived glycol (y), and another polyester polyol (a2). In addition, the invention provides an adhesive containing the moisture-curable polyurethane hot-melt resin composition.

The present disclosure provides a two-component solventless adhesive composition comprising a polyol component and an isocyanate component. The polyol component comprises a phosphate functional compound, and at least one polyol selected from polyester, polyether, and the combination thereof; and the isocyanate component comprises isocyanate prepolymer that is the reaction product of at least one isocyanate monomer and at least one polyol selected from polyester, polyether, and the combination thereof.

The present disclosure provides a two-component solventless adhesive composition comprising a polyol component and an isocyanate component. The polyol component comprises a phosphate functional compound, and at least one polyol selected from polyester, polyether, and the combination thereof; and the isocyanate component comprises isocyanate prepolymer that is the reaction product of at least one isocyanate monomer and at least one polyol selected from polyester, polyether, and the combination thereof.

Laminate film structures including an adhesive layer having gas and moisture barrier properties are disclosed. The disclosed laminate film structures comprise films bonded together with an adhesive composition, the adhesive composition having barrier properties, e.g., controlling oxygen and/or water vapor transmission rates. The disclosed laminate film structures comprise films made from polymers and/or metallized polymers whereby the weight, thickness, and/or number of film layers has been reduced by using a barrier adhesive in place of a standard adhesive while still achieving similar barrier properties. Methods for forming laminate structures having a desired barrier performance are also disclosed, the methods comprising determining the desired barrier performance of the laminate structure, selecting a barrier adhesive, selecting two or more film layers, including at least a first film layer and a second film layer, applying the barrier adhesive on a surface of the first film layer, and bringing a surface of the second film layer into contact with the barrier adhesive applied on the surface of the first film layer, thereby forming the laminate structure having a desired barrier performance.

The present invention relates to a process for manufacturing a shoe rubber outsole using a special heat and pressure stable water-based polyurethane dispersion adhesive without a pre-treatment of UV irradiation or plasma, as well as a process for manufacturing a shoe using the outsole manufactured as described herein and an PUD-based adhesive composition for the described processes.