The present invention relates to a moisture-crosslinkable sealant composition comprising: at least one polyurethane P comprising at least two NCO end functions; at least one polyimine A obtained via a process comprising a step of reaction between at least: a) a (poly)urethane-aldehyde comprising at least 2 aldehyde functions; b) a primary diamine; c) optionally in the presence of a primary monoamine or a monoaldehyde if the —CHO/NH.sub.2 molar ratio is other than 1.

The present invention relates to a moisture-crosslinkable sealant composition comprising: at least one polyurethane P comprising at least two NCO end functions; at least one polyimine A obtained via a process comprising a step of reaction between at least: a) a (poly)urethane-aldehyde comprising at least 2 aldehyde functions; b) a primary diamine; c) optionally in the presence of a primary monoamine or a monoaldehyde if the —CHO/NH.sub.2 molar ratio is other than 1.

There are provided a carbodiimide compound excellent in storage stability, and performance as a crosslinking agent, and a method for producing the same, and a resin composition excellent in the film forming properties and solvent resistance of a coating made at low temperature. A polycarbodiimide compound derived from an aliphatic diisocyanate compound having at least one primary isocyanate group, the polycarbodiimide compound having a structure in which all ends are capped with an organic compound having a functional group that reacts with an isocyanate group, carbodiimide group concentration A (%) and weight average molecular weight Mw satisfying the following formula (1), and a resin composition comprising the carbodiimide compound and an aqueous resin having a predetermined acid value at a predetermined ratio.
(A/Mw)×1000≥0.55  (1).

Disclosed are low-viscosity foamable polyurethane-forming compositions containing a polyol composition having monomeric and higher polyol components and optionally a polyhydroxylated aromatic compound; a polyisocyanate or latent polyisocyanate component or a combination thereof; a blowing agent; and optionally a cyclic carbonate having one or more hydroxyl groups. The monomeric and higher polyols each contain three or more hydroxyl groups, the higher polyol containing residues of the monomeric polyol and optionally residues of the polyhydroxylated aromatic compound, the residues being linked by one or more carbonate and/or ether groups. The Disclosed foamable polyurethane-forming compositions may contain the polyol compositions disclosed; an isocyanate functional component; and a blowing agent. The foamable compositions afford high strength, heat-resistant, low to moderate density foamed-polyurethane compositions useful in a variety of applications including construction, vehicle and packaging applications.

Disclosed is a low-temperature curable composition comprising: (A) at least one curable component selected from an epoxy resin and a blocked isocyanate, and (B) an amine-based latent curing agent, wherein a temperature peak of a reaction of the amine-based latent curing agent (B) with a bisphenol A type epoxy resin is between 70° C. and 110° C.

A phosphonium-containing polyurethane composition can include an aqueous liquid vehicle including water, organic co-solvent, and surfactant, and polyurethane particles including a polyurethane polymer with a polyurethane backbone. The polyurethane polymer can have pendant side chain groups along the polyurethane backbone as well as end cap groups terminating the polyurethane polymer. The pendant side chain groups and the end cap groups can collectively include aliphatic phosphonium salts and polyalkylene oxides.

A composition is composed of (A) an ethylene/alpha-olefin/diene TEMPO compound having the Structure (I) and (D) a peroxide. The molar ratio of isocyanate groups of Component (B) to the functional groups of Component (C) is from 0.80 to 1.10. A composition is composed of (A) an ethylene/alpha-olefin/diene interpolymer; a second composition comprising a reaction mixture comprising (B) an isocyanate comprising at least two isocyanate groups and (C) a TEMPO compound having the Structure (I) and (D) a peroxide, wherein the molar ratio of isocyanate groups of Component (B) to the functional groups of Component (C) is from 0.80 to 1.10. In Structure I, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each independently selected from H and C.sub.1-C.sub.6 alkyl groups and X is a functional group selected from OH and NH.sub.2. ##STR00001##

Disclosed is an aqueous composition for surface coating, including: a main ingredient comprising a first compound having at least two functional groups selected from the group consisting of a carboxyl group, a hydroxyl group, an amino group and combinations thereof, per molecule; a curing agent comprising a second compound having at least two functional groups selected from the group consisting of an aziridine group, an isocyanate group, a carbodiimide group and combinations thereof, per molecule; and an aqueous solvent. Further, an automotive sheet using the aqueous composition for surface coating is disclosed.

The present invention is directed to a method for adjusting the tack value of a binder material formed from a composition comprising an emulsion that comprises an emulsifiable prepolymer that is the reaction product of (i) an isocyanate compound, (ii) a polyol compound, and (iii) a monol compound, and wherein the method comprises: (a) determining a desired tack profile for the emulsion, wherein the tack profile comprises a tack value ranging from 1 to 4 as measured by the TACK TEST METHOD for a particular time value, and adjusting the reactive group ratio of component (i) to (ii) to achieve the desired tack value profile; (b) introducing water to components (i), (ii), and (iii) to form the emulsion composition; and (c) applying the emulsion composition to a lignocellulosic substrate thereby forming a mixture having a moisture water content ranging from 7% to 25% based on the total weight of the mixture.

Provided are a polyester resin modifying agent, a method for producing the same, and a polyester resin composition including the modifying agent, the polyester resin modifying agent including a polycarbodiimide compound, being capable of improving hydrolysis resistance of a polyester resin, having a small content of a carbodiimidizing catalyst having been used in producing the polyester resin modifying agent, and having suppressed yellowness. Provided are a polyester resin modifying agent in which a polycarbodiimide compound obtained by reacting an aliphatic diisocyanate, an isocyanate-terminal capping agent, and a carbodiimidizing catalyst is included, a content of the carbodiimidizing catalyst falls within a predetermined range, and a yellowness index (YI) is less than 20; a method for producing the polyester resin modifying agent; and a polyester resin composition.