A curing agent isocyanate of a fully bio-based coating material for a polyurethane controlled release fertilizer is a bio-based 1,5-pentane diisocyanate compound. The bio-based 1,5-pentane diisocyanate compound is a compound of a bio-based 1,5-pentane diisocyanate monomer and its polymer, or a compound of different bio-based 1,5-pentane diisocyanate polymers. The bio-based PDI (1,5-pentane diisocyanate) polymer comprises a bio-based PDI trimer and its derivatives, a bio-based PDI tetramer and its derivatives, and other bio-based PDI multimers and their derivatives, which are derived from bio-based materials such as glucose and lysine. The mass percentage of bio-based materials in all raw materials is in a range of 65% to 71%. The coating material is prepared by cross-linking the bio-based polyol and the bio-based 1,5-pentane diisocyanate compound.

The present invention relates to a multi-aziridine compound having: ⋅a) from 2 to 6 of the following structural units (A): whereby R.sub.1 is H, R.sub.2 and R.sub.4 are independently chosen from H or an aliphatic hydrocarbon group containing from 1-4 carbon atoms, R.sub.3 is an aliphatic hydrocarbon group containing from 1-4 carbon atoms, R′═H or an aliphatic hydrocarbon group containing from 1 to 4 carbon atoms; R″ and R′″ are independently chosen from an aliphatic hydrocarbon group containing from 1 to 4 carbon atoms, a cycloaliphatic hydrocarbon group containing from 4 to 12 carbon atoms or an aromatic hydrocarbon group containing from 6 to 12 carbon atoms, 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 600 Daltons to 5000 Daltons.

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The present invention relates to a multi-aziridine crosslinker composition, characterized in that the composition is an aqueous dispersion having a pH ranging from 9 to 14 and comprising a multi-aziridine compound in dispersed form, wherein said multi-aziridine compound has: a. from 2 to 6 of the following structural units A: (A) whereby R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are H; m is 1, R′ and R″ are according to (1) or (2): (2) R′═H or an aliphatic hydrocarbon group containing from 1 to 14 carbon atoms, and R″=an alkyl group containing from 1 to 4 carbon atoms, CH2-O—(C═O)—R′″ or CH2-O—R″″, whereby R′″ is an alkyl group containing from 4 to 12 carbon atoms and R″″ is an alkyl group containing from 1 to 14 carbon atoms, (2) R′ and R″ form together a saturated cycloaliphatic hydrocarbon group containing from 5 to 8 carbon atoms; 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 600 to 10000 Daltons.

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The invention relates to particular (aziridinyl hydroxy)-functional organic component. The invention further relates to liquid compositions comprising said (aziridinyl hydroxy)-functional organic component. The invention further relates to coating compositions comprising said (aziridinyl hydroxy)-functional organic component. The invention further relates to liquid coating compositions comprising said (aziridinyl hydroxy)-functional organic component. The invention further relates to a kit-of-parts comprising in one of its parts a liquid composition comprising a particular (aziridinyl hydroxy)-functional organic component. The invention further relates to cured forms of said liquid compositions, coating compositions, and liquid coating compositions. The invention further relates to articles comprising the (aziridinyl hydroxy)-functional organic component and/or the liquid compositions and/or the liquid coating compositions and/or their cured forms. The invention further relates to various uses of the (aziridinyl hydroxy)-functional organic component and/or said liquid compositions, and/or said liquid coating compositions, and/or said kit-of-parts and/or said cured forms.

Provided is a resin composition comprises a cyanate ester compound (A), an amine adduct compound (B) and a borate ester (C).

A heat stable siloxane-imide copolymer and a curable silicone adhesive composition comprising such a siloxane-imide copolymer is shown and described herein. The composition includes an alkenyl silicone, a silicone hydride based cross linker, hydrosilylation catalyst and additives that is curable at relatively low temperatures and shows good heat stability.

A condensation curable silicone adhesive composition comprising a siloxane-imide base polymer, condensation curable organopolysiloxane crosslinker, a condensation catalyst and an additive is shown and described herein. The composition is curable at relatively room temperatures and shows good heat stability.

Disclosed are polymers, methods of making polymers, and compositions, focused on cross-linking heterocycles comprising a moiety of Formula I with thiols and thiolates.

A three component composition consisting of a polyol component (A) including at least two polyols, one with high, one with low molecular weight and water, a polyisocyanate component (B) including a methylene diphenyl diisocyanate (MDI) product with an average NCO functionality of at least 2.5, or a methylene diphenyl diisocyanate (MDI) product with an average NCO functionality of at least 2 and at least one further polyol with an amount of between 1% and 30% based on the weight of the polyisocyanate component (B), wherein the MDI product and the polyol have reacted at least partially, and a powder component (C) including at least one hydraulic binder, preferably cement and/or calcined paper sludge, preferably a calcium compound selected from calcium hydroxide and/or calcium oxide, and optionally one or more aggregates.

Described herein is a curable coating composition including at least one Michael donor (A) having at least one acetoacetate group, at least one Michael acceptor (B) and at least one specific catalyst (C). Also described herein are a method of using the curable coating composition as a clear coating in a method to prepare a multilayer coating and a multilayer coating obtained from said process. Further described herein is a kit-of-parts including at least two separate containers C1 and C2, where the specific catalyst (C) and/or the at least one Michael acceptor (B) is contained in container C2. Additionally described herein is a method of using specific salts of carboxylic acids as catalyst in a reaction between a Michael donor (A) having at least one acetoacetate group and a Michael acceptor (B).