The present invention provides a synthetic leather including at least a base (i), an adhesive layer (ii), and a skin layer (iii). The adhesive layer (ii) is formed of a urethane resin composition including a urethane resin (A) produced using an aromatic polyisocyanate (a1) as a raw material and water (B). The skin layer (iii) is formed of a urethane resin composition including an anionic urethane resin (X) having an anionic group concentration of 0.25 mmol/g or less, water (Y), and an anionic surfactant (Z). The aromatic polyisocyanate (a1) preferably includes toluene diisocyanate. The urethane resin (A) has an aromatic ring concentration of 0.1 to 2.5 mol/kg.

Methods of printing a three-dimensional object using co-reactive components are disclosed. Thermosetting compositions for three-dimensional printing are also disclosed.

The present invention relates to an aqueous coating composition which has excellent storage stability, while being capable of forming a coating film that exhibits excellent chipping resistance and excellent finish appearance in a dust part and in a film formation part. The present invention provides an aqueous coating composition which contains (A) a urethane resin that is obtained from constituents including (a1) a polyisocyanate component and (a2) a polyol component containing (a2-1) a polyether polyol and (a2-2) a polycarbonate polyol, (B) at least one hydroxyl group-containing resin that is selected from among (B1) hydroxyl group-containing acrylic resins and (B2) hydroxyl group-containing polyester resins, (C) an organic solvent that has a solubility parameter within the range of from 8.8 to 10.1, and (D) water, wherein based on 100 parts by mass of the resin solid content in the aqueous coating composition, the content of the urethan resin (A) is within the range of from 60 to 85 parts by mass and the content of the organic solvent (C) is within the range of from 5 to 30 parts by mass.

The present invention relates to an aqueous coating composition which has excellent storage stability, while being capable of forming a coating film that exhibits excellent chipping resistance and excellent finish appearance in a dust part and in a film formation part. The present invention provides an aqueous coating composition which contains (A) a urethane resin that is obtained from constituents including (a1) a polyisocyanate component and (a2) a polyol component containing (a2-1) a polyether polyol and (a2-2) a polycarbonate polyol, (B) at least one hydroxyl group-containing resin that is selected from among (B1) hydroxyl group-containing acrylic resins and (B2) hydroxyl group-containing polyester resins, (C) an organic solvent that has a solubility parameter within the range of from 8.8 to 10.1, and (D) water, wherein based on 100 parts by mass of the resin solid content in the aqueous coating composition, the content of the urethan resin (A) is within the range of from 60 to 85 parts by mass and the content of the organic solvent (C) is within the range of from 5 to 30 parts by mass.

The present invention relates to a two-component coating system comprising a first component and a second component each of which is separate and distinct from each other, wherein the first component comprises a carboxylic acid functional polymer dissolved and/or dispersed in an aqueous medium, and the second component comprises a multi-aziridine compound having: a) from 2 to 6 of the following structural units (A): b) whereby m is an integer from 1 to 8; and o R′ and R″ are both H b) one or more linking chains wherein each one of these linking chains links two of the structural units A; c) one or more connecting groups whereby each one of the connecting groups connects two of the structural units A; and d) a molecular weight in the range from 840 Daltons to 5000 Daltons, wherein the molecular weight is measured using MALDI-TOF mass spectrometry.

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The present invention relates to an acid-resistant and alkali-resistant composition, a preparation process thereof and use thereof in producing an article, and an article comprising a substrate coated or impregnated with the same and the preparation method and use of the article. The composition contains: at least one aqueous polyurethane dispersion having a carboxyl group; at least one crosslinking agent having an isocyanate reactive group; at least one crosslinking agent having a carboxyl reactive group; and optionally an additive; wherein, the amount of the carboxyl groups in said aqueous polyurethane dispersion is more than 0.05 wt %, based on the amount of said aqueous polyurethane dispersion being 100 wt %; the amount of said crosslinking agent having an isocyanate reactive group is 0.2 wt %-10 wt %, based on the amount of said composition being 100 wt %; the molar ratio of the carboxyl reactive groups to the carboxyl groups of said composition is more than 0.5. The film formed with the composition of the present invention has good acid-resistance and alkali-resistance. The product obtained by treating with the composition of the present invention has flat appearance and good handfed.

The present invention relates to an acid-resistant and alkali-resistant composition, a preparation process thereof and use thereof in producing an article, and an article comprising a substrate coated or impregnated with the same and the preparation method and use of the article. The composition contains: at least one aqueous polyurethane dispersion having a carboxyl group; at least one crosslinking agent having an isocyanate reactive group; at least one crosslinking agent having a carboxyl reactive group; and optionally an additive; wherein, the amount of the carboxyl groups in said aqueous polyurethane dispersion is more than 0.05 wt %, based on the amount of said aqueous polyurethane dispersion being 100 wt %; the amount of said crosslinking agent having an isocyanate reactive group is 0.2 wt %-10 wt %, based on the amount of said composition being 100 wt %; the molar ratio of the carboxyl reactive groups to the carboxyl groups of said composition is more than 0.5. The film formed with the composition of the present invention has good acid-resistance and alkali-resistance. The product obtained by treating with the composition of the present invention has flat appearance and good handfed.

Aqueous hydrophobic polyurethane dispersions are made from urethane prepolymers derived from reacting constituents including at least one polyisocyanate, vegetable oil based saturated monoglycerides, non-isocyanate based urethane polyols prepared from polyamines and cyclic carbonates, at least one long-chain polymeric polyol or long-chain polyol from biorenewable resources, polyols with hydrophilic groups, optional polydimethysiloxane based polyols with hydroxyl functional groups terminated in one end and alkyl groups terminated in another end.

Aqueous hydrophobic polyurethane dispersions are made from urethane prepolymers derived from reacting constituents including at least one polyisocyanate, vegetable oil based saturated monoglycerides, non-isocyanate based urethane polyols prepared from polyamines and cyclic carbonates, at least one long-chain polymeric polyol or long-chain polyol from biorenewable resources, polyols with hydrophilic groups, optional polydimethysiloxane based polyols with hydroxyl functional groups terminated in one end and alkyl groups terminated in another end.

The present invention relates to a polyurethane urea elastic yarn having improved dyeability and a manufacturing method therefor. Through a process of forming a prepolymer by mixing polyethyleneglycol with polyol and then adding diisocyanate to the same in a prepolymer manufacturing step during the manufacture of a polyurethane urea elastic yarn, the hydrophilicity of the polyurethane urea elastic yarn is improved such that the accessibility of an acid dye is enhanced, thereby enabling the dyeability of the polyurethane urea elastic yarn to be enhanced and an advantage of dye color deepening of a fabric, in which nylon and a polyurethane urea elastic yarn are knitted together, to be expected.