Provided are a carbodiimide-based, waterborne resin crosslinking agent that not only is excellent in the storage stability when the crosslinking agent and a waterborne resin are caused to coexist, but also can improve physical properties such as solvent resistance and water resistance of a cured product of the waterborne resin, and a waterborne resin crosslinking agent-containing liquid and a waterborne resin composition comprising the same. The waterborne resin crosslinking agent of the present invention comprises a predetermined polycarbodiimide compound (A) having an oxyalkylene group, a predetermined polycarbodiimide compound (B), and a surfactant (C), each polycarbodiimide compound has a structure in which an isocyanate group is capped with a predetermined end-capping compound at each of both terminals, a total content of the oxyalkylene group in (A) is 15% by mass or more, a total content of the oxyalkylene group in (A) and (B) based on a total amount of (A) and (B) is 10% by mass or less, and a content of (C) is 0.1 to 20 parts by mass based on a total content of (A) and (B) of 100 parts by mass.

A polymerizable composition of the present invention includes a polymerization reactive compound (A), and an internal release agent (B) including a polyether-modified silicone compound (b1) represented by General Formula (1) and a polyether-modified silicone compound (b2) represented by General Formula (2), in which the polymerization reactive compound (A) is one or more compounds selected from a polyiso(thio) cyanate compound, a poly(thio) epoxy compound, a polyoxetanyl compound, a polythietanyl compound, an alkyne compound, a poly(thi)ol compound, a polyamine compound, an acid anhydride, or a polycarboxylic acid compound. ##STR00001##

Disclosed is a polyurethane foam formulation based on conventional polyether and polyester polyols based on renewable raw materials, with in particular MDI, for the production of preferably viscoelastic PUR moulded foams and sound insulations with foams based thereon.

Provided is a waterborne resin crosslinking agent and the like capable of inhibiting lowering of gloss (relative specular glossiness) of cured films (waterborne resin coating films) after heating. The waterborne resin crosslinking agent includes a polycarbodiimide compound (A) and a polycarbodiimide compound (B); the polycarbodiimide compound (A) has a structure in which isocyanate groups at both terminals are each capped with a hydrophilic organic compound, and at least one of the hydrophilic organic compounds has a molecular weight of 340 or more; the polycarbodiimide compound (B) has a structure in which isocyanate groups at both terminals are each capped with a monool compound having 3 to 18 carbon atoms; when the monool compound has 3 to 17 carbon atoms, the polycarbodiimide compound (A) is in an amount of 5 to 95 parts by mass per 100 parts by mass in total of the polycarbodiimide compound (A) and the polycarbodiimide compound (B); and when the monool compound has 18 carbon atoms, the polycarbodiimide compound (A) is in an amount of 30 to 70 parts by mass per 100 parts by mass in total of the polycarbodiimide compound (A) and the polycarbodiimide compound (B).

The present invention relates to compount (I) comprising at least one functional group A and at least one functional group B, wherein the functional groups A has structural formula A: wherein R.sub.1 is H, R.sub.2, R.sub.3 and R.sub.4 are independently chosen from H, methyl or ethyl, m is 1-6; and the functional groups B has structural formula B: R.sub.5 is H or methyl, X is O or NH, Z′ is a polyalkoxy group or an omega-alkoxy polycaprolacton group, Y′ is a collection of atoms covalently connected in linear or branched configuration n″ is 0 or 1, and m′ is an integer from 1-6; with the proviso that the summed amount of the number of functional groups A and the number of functional groups B in compound (I) is from 2-13; and the compound has a molecular weight in the range from 800-10000 Dalton.

##STR00001##

The present invention relates to a composition comprising a copper(II)-salt capable of being used as a catalyst, a process for the manufacture of said composition, the use of said composition as a catalyst, in particular, as catalyst for the reaction of at least one isocyanate compound with at least one isocyanate-reactive compound, in particular for the manufacture of polyisocyanate polyaddition products, such as polyurethanes, in particular, polyurethane foams.

The present invention relates to a composition comprising at least one tertiary amino compound (A), and at least one copper(II)-compound (B), a process for the manufacture of said composition, the use of said composition as a catalyst, in particular, as catalyst for the reaction of at least one isocyanate compound with at least one isocyanate-reactive compound, in particular for the manufacture of polyisocyanate polyaddition products, such as polyurethanes, in particular, polyurethane foams.

The present invention relates to a multi-aziridine compound having: a) at least 2 of the following structural units (A): (A) whereby R.sub.1 is H; R.sub.2 and R.sub.4 are independently chosen from H, a linear group containing from 1 to 8 carbon atoms and optionally containing one or more heteroatoms, a branched or cyclic group containing from 3 to 8 carbon atoms and optionally containing one or more heteroatoms, phenyl, benzyl, or pyridinyl; R.sub.3 is chosen from a linear group containing from 1 to 8 carbon atoms and optionally containing one or more heteroatoms, a branched or cyclic group containing from 3 to 8 carbon atoms and optionally containing one or more heteroatoms, phenyl, benzyl, or pyridinyl; or R.sub.2 and R.sub.3 (in case R.sub.2 is different than H) may be part of the same cyclic group containing from 3 to 8 carbon atoms; R′ and R″ are independently H or an aliphatic hydrocarbon group containing from 1 to 12 carbon atoms; and b) a molecular weight from 600 to 20000 Daltons, wherein the molecular weight is determined using MALDI-TOF mass spectrometry according to the description.

##STR00001##

The present invention relates to a multi-aziridine compound having: a) from 2 to 6 of the following structural units (A): whereby R′, R″ are as defined herein m is an integer from 1 to 6; b) one or more linking chains wherein each one of these linking chains links two of the structural units A; and c) a molecular weight in the range from 840 Daltons to 5000 Daltons. The multi-aziridine compound can be used for example for crosslinking of for example carboxylic acid functional polymers dissolved and/or dispersed in an aqueous medium.

##STR00001##

The present invention relates to an aqueous coating composition comprising a multi-aziridine compound and a carboxylic acid functional polymer, characterized in that (i) the composition is an aqueous dispersion having a pH ranging from 8 to 14, (ii) the aqueous dispersion comprises particles X which particles X comprise multi aziridine compound and particles Y which particles Y comprise carboxylic acid functional polymer, and (iii) said multi-aziridine compound has: a) from 2 to 6 of the following structural units A: b) one or more linking chains wherein each one of these linking chains links two of the structural units A; and c) a molecular weight in the range from 500 to 10000 Daltons.

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