The present invention provides a urethane resin composition including a urethane resin (A) having a nonionic group, water (B), and a powder (C), wherein the urethane resin (A) has a flow start temperature of 100 C. or above, the mass ratio [(A)/(B)] of the urethane resin (A) to the water (B) is in the range of 50/50 to 80/20, and the bulk density of the powder (C) is 400 g/L or less. The present invention also provides a synthetic leather including at least a base fabric (i), an adhesive layer (ii), and a skin layer (iii), wherein the adhesive layer (ii) is formed from the urethane resin composition. The urethane resin composition can form a film with excellent peel strength and texture.

The present invention relates generally to compositions comprising polyelectrolytes complexes (PECs) of anionic and cationic biopolymers capable of forming barriers on fiber based materials. Also disclosed is a fibre based material with a barrier coating against oil and water, wherein the material is provided with a barrier from at least two layers formed from at least one composition comprising a polyelectrolyte complex (PEC) of a cationic biopolymer and an anionic biopolymer, The two layers result in improvements in both oil resistance and water resistance compared to the same material provided with a single layer of said at least one composition.

The present invention relates generally to compositions comprising polyelectrolytes complexes (PECs) of anionic and cationic biopolymers capable of forming barriers on fiber based materials. Also disclosed is a fibre based material with a barrier coating against oil and water, wherein the material is provided with a barrier from at least two layers formed from at least one composition comprising a polyelectrolyte complex (PEC) of a cationic biopolymer and an anionic biopolymer, The two layers result in improvements in both oil resistance and water resistance compared to the same material provided with a single layer of said at least one composition.

Provided is a composite fabric having a base fabric and at least one bacterial biopolymer layer. The base fabric is a woven fabric, and includes warp yarns and weft yarns. At least a first plurality of warp yarns and a first plurality of weft yarns form a base layer of the base fabric. A second plurality of warp yarns and/or a second plurality of weft yarns forms an additional layer of loop portions on at least one of the sides of the base fabric. The bacterial biopolymer layer is provided at least on part of the additional layer. Further provided is a process for the production of the composite fabric and a clothing article formed of the composite fabric.

Provided is a composite fabric having a base fabric and at least one bacterial biopolymer layer. The base fabric is a woven fabric, and includes warp yarns and weft yarns. At least a first plurality of warp yarns and a first plurality of weft yarns form a base layer of the base fabric. A second plurality of warp yarns and/or a second plurality of weft yarns forms an additional layer of loop portions on at least one of the sides of the base fabric. The bacterial biopolymer layer is provided at least on part of the additional layer. Further provided is a process for the production of the composite fabric and a clothing article formed of the composite fabric.

Water vapor transport membranes for ERV and other water vapor transport applications are provided. The membranes include a substrate and an air impermeable selective layer coated on the substrate, the selective layer including a cellulose derivative and a sulfonated polyaryletherketone. In some embodiments the sulfonated polyaryletherketone is in a cation form and/or the selective layer includes s PEEK and CA in an s PEEK:CA (wt.:wt.) ratio in the range of about 7:3 to 2:3. Methods for making such membranes are provided. The methods include applying a coating solution/dispersion to a substrate and allowing the coating solution/dispersion to dry to form an air impermeable selective layer on the substrate, the coating solution/dispersion including a cellulose derivative and a sulfonated polyarylether ketone. In some embodiments the sulfonated polyaryletherketone is in a cation form and/or the coating solution/dispersion includes s PEEK and CA in an sPEEK:CA (wt.:wt.) ratio in the range of about 7:3 to 2:3.

An aqueous polyelectrolyte (PEC) composition for application to a fibre based material for use in obtaining a barrier coating resistant to oil and water, comprises from 0.1 to 20% (w/w) of carboxymethyl cellulose (CMC) and from 0.1 to 20% of cationic starch (CS), providing PECs with a charge ratio of 1; from 1 to 20% (w/w) of a plasticizer; and from 1 to 15% (w/w) of a pH adjusting agent selected from an acid, a buffering system and a base.

An aqueous polyelectrolyte (PEC) composition for application to a fibre based material for use in obtaining a barrier coating resistant to oil and water, comprises from 0.1 to 20% (w/w) of carboxymethyl cellulose (CMC) and from 0.1 to 20% of cationic starch (CS), providing PECs with a charge ratio of 1; from 1 to 20% (w/w) of a plasticizer; and from 1 to 15% (w/w) of a pH adjusting agent selected from an acid, a buffering system and a base.

The present invention relates to a method for manufacturing mycelium mat into leather by using pH-controlled tannic acid. The method comprises the following steps: (1) inactivating the mycelium mat; (2) infiltrating the mycelium mat with a polysaccharide solution; (3) treating the polysaccharide-infused mycelium mat with a tannic acid solution; and (4) introducing a buffering agent to the tannic acid-treated mycelium mat. This innovative approach enhances the mechanical properties of the resulting leather, offering an environmentally friendly alternative to conventional leather materials.

An energy dissipating fiber and fabric for protective textile application, which can absorb energy during shocking, stretching and vibration. The disclosed fiber/fabric can include a polymer matrix, a shear-thickening material and a reinforcing filler.