The present invention aims to provide an amino group-containing copolymer having excellent soil release properties and a method for producing a soil release agent using the same. The present invention relates to an amino group-containing copolymer containing a structural unit (a) derived from an amino group-containing monomer, a structural unit (b) derived from a monomer having a polyalkylene glycol chain, a structural unit (c) derived from a hydrophobic monomer, and a structural unit (d) derived from an unsaturated carboxylic acid monomer.

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.

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.

A water dispersible repellent containing a modified form of a polyol, wherein the volume abundance ratio of particles having a size of 100 m or more, as measured by laser diffraction scattering, is 25% or less, and the polyol has one cyclic structure or does not have a cyclic structure, the repellent being capable of imparting oil resistance to a base material (for example, fiber or paper).

Methods for dyeing suture material that include incubating the suture material in a high temperature staining bath comprising hematein are disclosed. The staining bath may include a nonionic surfactant. The method is carried out in the absence of chromium salts. Also disclosed are (i) a dyed suture material produced by the methods and (ii) a surgical suturing kit that includes the dyed suture material.

Methods for dyeing suture material that include incubating the suture material in a high temperature staining bath comprising hematein are disclosed. The staining bath may include a nonionic surfactant. The method is carried out in the absence of chromium salts. Also disclosed are (i) a dyed suture material produced by the methods and (ii) a surgical suturing kit that includes the dyed suture material.