A crosslinking agent composition for water-compatible resins which comprises a hydrophobic crosslinking agent, a water-soluble organic compound, one or more oily media selected from among hydrocarbon-based solvents and ketone-based solvents having a solubility parameter of 9.0 (cal/cm.sup.−3).sup.1/2 or less, and an aqueous medium. The crosslinking agent composition can improve the storage stability of a water-compatible resin composition. The water-compatible resin composition which contains this crosslinking agent composition can give cured objects satisfactory in terms of water resistance and solvent resistance and is suitable also for use in wet-on-wet coating.

A method for producing a composition comprising polycarbodiimide, comprising the step of the reaction of a reaction mixture which contains an aromatic polyisocyanate and a carbodiimidising catalyst, wherein, before the reaction, the aromatic polyisocyanate is treated at a temperature of ≧80° C. to ≦150° C. and a pressure of ≧1 mbar to ≦500 mbar by passing through an inert gas and/or during the reaction, the reaction mixture is treated at a temperature of ≧80° C. to ≦150° C. and a pressure of ≧1 mbar to ≦500 mbar by passing through an inert gas and wherein the content of hydrolysable chlorine in the reaction mixture is ≦10 ppm.

A synthetic leather comprising a substrate, a skin layer that is disposed on one main surface of the substrate, and an anti-stain layer that is disposed to cover the skin layer. The anti-stain layer contains a base resin that comprises silicon and a unit derived from a compound that has a urethane bond. In the anti-stain layer, a fluorine atom/silicon atom atomic ratio, which is a proportion of a fluorine atom to the silicon atom, is 0.01 or less. A first color difference ΔE1* between before and after a stain adhesion test performed on the synthetic leather rubbed under a specific condition is 5 or less.

The invention relates to a non-intumescent, waterborne fire-retardant coating composition comprising: (a) at least one binder resin having reactive functional groups comprising both hydroxyl and carboxylic groups, wherein the binder resin has an acid value lower than 40 mg KOH/g resin on solids and an OH value higher than 30 mg KOH/g resin on solids, (b) a crosslinker, capable of reacting with at least some of the functional groups of the binder resin (a), wherein the crosslinker contains a carbodiimide functionality, and (c) at least one fire retardant. The resulting coating has a good adhesion to a variety of substrates, prolonged pot-life, and complies with the requirements of fire resistance in aircraft industry.

The present invention provides a composition which is capable of forming a polyurethane foam having a high hardness and excellent sound absorption properties. [Solution] The present invention relates to a composition for forming polyurethane foam characterized in that the composition for forming polyurethane foam comprises a polyol, a polyisocyanate, and a catalyst, in which the polyol comprises a polyol (A) having a number average molecular weight of 1500 to 8000 g/mol, the catalyst comprises a trimerization catalyst, in which the polyurethane foam has an air permeability of not less than 0.1 L/sec.

An object is to achieve both good washing fastness and texture by combining a urethane resin of high fracture elongation with a small quantity of crosslinking agent. As a means for achieving the object, an inkjet ink composition for textile printing is provided that contains a pigment, a water-dispersible resin, a crosslinking agent, and water; wherein, as the water-dispersible resin, a resin of 1200 to 1800% in fracture elongation and 10 to 48 MPa in tensile strength is contained by 1.0 to 3.0 parts by mass relative to 1 part by mass of the pigment, and the crosslinking agent is contained by 0.03 to 0.17 parts by mass relative to 1 part by mass of the water-dispersible resin.

The invention relates to a catalyst component for isocyanate modification, comprising at least one cyclic ammonium salt having a cation of the formula I wherein Y is a linear or branched C.sub.2-C.sub.20 segment which is substituted by a hydroxyl group in the 2 position to the charge-bearing nitrogen atom and optionally bears further substituents and is optionally interrupted by heteroatoms from the group of oxygen, sulfur, nitrogen and aromatic rings and optionally has further rings, and the N-bonded substituents R.sup.1 and R.sup.2 are either independently identical or different, substituted or unsubstituted, optionally branched, aliphatic C.sub.1-C.sub.20 radicals, aromatic C.sub.6-C.sub.20 radical or araliphatic C.sub.7-C.sub.20 radicals or the N-bonded substituents R.sup.1 and R.sup.2 form a ring segment X with one another for which the same or different definition given above for Y is applicable, with the proviso that X has a hydroxyl group as substituent in the 2 position to the charge-bearing nitrogen atom or does not have a hydroxyl group as substituent in the 2 position to the charge-bearing nitrogen atom.

The present invention relates to a 2K coating system consisting of two components (A) and (B) being separate from each other, wherein (A) comprises at least one constituent (a1) containing at least one aromatic moiety and bearing on average at least two primary and/or secondary amino groups, wherein (B) comprises at least one constituent (b1) containing at least one aromatic moiety and bearing on average at least two isocyanate groups, wherein each of (A) and (B) has a solid content of at least 95 wt.-%, based on the total weight of the respective component, the amount of any fillers present in component (A) does not exceed 45 wt.-%, based on the total weight of component (A), and constituent (b1) present in component (B) bears carbodiimide and/or uretonimine units as well as at least one structural unit (1), a coating composition obtainable by mixing components (A) and (B) of the inventive coating system, a use of said coating composition as sealant, in particular for providing a waterproof coating on a substrate, a method of applying the coating composition to a substrate and in particular a method of sealing a surface of a substrate such as concrete and/or steel, and a coated substrate such as a sealed concrete and/or steel substrate obtainable by this method.

Disclosed herein is a 2K coating system consisting of two components (A) and (B) being separate from each other, where (A) includes at least one constituent (a1) containing at least one aromatic moiety and bearing on average at least two primary and/or secondary amino groups, where (B) includes at least one constituent (b1) containing at least one aromatic moiety and bearing on average at least two isocyanate groups, where each of (A) and (B) has a solid content of at least 95 wt.-%, based on the total weight of the respective component, and constituent (b1) present in component (B) bears carbodiimide and/or uretonimine units and at least one structural unit (I). Also disclosed herein are a coating composition obtainable by mixing components (A) and (B), a method of using said coating composition as sealant, a method of applying the coating composition to a substrate, and a sealed substrate.

A method for preparing rigid polyurethane (PUR) foams or rigid polyisocyanurate (PIR) foams in which method the rigid PUR or PIR foam is prepared by reacting a composition (C) comprising: at least one isocyanate-reactive component (B1) having functional groups selected from hydroxyl, amine and thiol groups; at least one isocyanate component (A1) having an average functionality of less than 2.70; and at least one blowing agent [blowing agent (BA), herein after]; with the proviso that the overall average functionality [F.sub.n,avg(A), herein after] of all isocyanate components present in the composition (C) is less than 2.70; wherein the composition (C) is characterized by an isocyanate index X, wherein the rigid PUR or PIR foams are produced by depositing the composition (C) between two gas-tight facing sheets and wherein the rigid PUR or PIR foam is characterized by a difference Δλ between the initial thermal conductivity value λ.sub.ini and the aged thermal conductivity value λ.sub.aged of said rigid PUR or PIR foam wherein: when X≤200 then Δλ<1.35; and when X>200 then Δλ<[6.49−(4.46*F.sub.n,avg(A))−(0.02348*X)+(0.492*F.sub.n,avg(A)*F.sub.n,avg(A))+(0.01343*F.sub.n,avg(A)*X)+0.3].