The invention relates to a coating composition comprising a reaction product UA of at least one multifunctional aldehyde A with at least one cyclic urea U, and a crosslinkable resin having at least one kind of functional groups selected from the group consisting of hydroxyl functional groups, acid functional groups, amide functional groups, amino functional groups, imino functional groups, mercaptan functional groups, phosphine functional groups, and carbamate functional groups, characterised in that the degree of etherification, measured as the ratio (13 OR)/(U) of the amount of substance n(OR) of alkoxy groups as substituents of the aldehyde carbon atoms of the multifunctional aldehyde chemically bound in the reaction product UA to the amount of substance (U) of cyclic urea U chemically bound in the reaction products, is less than 0.01 mol/mol, and to a process for the preparation of the reaction product UA.

A temperature-curable aminoplastic adhesive resin that is a (poly)-condensate of: (i) at least one aminoplast-forming chemical; (ii) 5-hydroxymethylfurfural (5-HMF), its oligomers and/or its isomers; and, (iii) at the least one second (poly-)condensable chemical. Composite boards, such as wood-based panels, can be produced using this adhesive resin. The production of the aminoplastic adhesive resin includes the reaction of urea with 5-hydroxymethylfurfural (5-HMF) and glyoxal. The adhesive resin can be used in the production of wood-based panels such as particleboards, fiberboards and products usually called, among others, plywood and/or blockboards.

A temperature-curable aminoplastic adhesive resin that is a (poly)-condensate of: (i) at least one aminoplast-forming chemical; (ii) 5-hydroxymethylfurfural (5-HMF), its oligomers and/or its isomers; and, (iii) at the least one second (poly-)condensable chemical. Composite boards, such as wood-based panels, can be produced using this adhesive resin. The production of the aminoplastic adhesive resin includes the reaction of urea with 5-hydroxymethylfurfural (5-HMF) and glyoxal. The adhesive resin can be used in the production of wood-based panels such as particleboards, fiberboards and products usually called, among others, plywood and/or blockboards.

Resin compositions, products made therewith, and methods for making such resin compositions and products. The resin composition can include a polyamide-epihalohydrin resin, a cationic styrene maleimide resin, and a urea-formaldehyde resin. The polyamide-epihalohydrin resin can include a reaction product of a polyamidoamine and an epihalohydrin. The cationic styrene maleimide resin can include a reaction product of a styrene maleic anhydride copolymer and an amine compound. The product can include a fiber web and an at least partially cured resin composition. The resin composition, prior to curing, can include a polyamide-epihalohydrin resin, a cationic styrene maleimide resin, and a urea-formaldehyde resin. The polyamide-epihalohydrin resin can include a reaction product of a polyamidoamine and an epihalohydrin. The cationic styrene maleimide resin can include a reaction product of a styrene maleic anhydride copolymer and an amine compound.

Resin compositions, products made therewith, and methods for making such resin compositions and products. The resin composition can include a polyamide-epihalohydrin resin, a cationic styrene maleimide resin, and a urea-formaldehyde resin. The polyamide-epihalohydrin resin can include a reaction product of a polyamidoamine and an epihalohydrin. The cationic styrene maleimide resin can include a reaction product of a styrene maleic anhydride copolymer and an amine compound. The product can include a fiber web and an at least partially cured resin composition. The resin composition, prior to curing, can include a polyamide-epihalohydrin resin, a cationic styrene maleimide resin, and a urea-formaldehyde resin. The polyamide-epihalohydrin resin can include a reaction product of a polyamidoamine and an epihalohydrin. The cationic styrene maleimide resin can include a reaction product of a styrene maleic anhydride copolymer and an amine compound.

The invention relates to a coating composition comprising a reaction product UA of at least one multifunctional aldehyde A with at least one cyclic urea U, and a crosslinkable resin having at least one kind of functional groups selected from the group consisting of hydroxyl functional groups, acid functional groups, amide functional groups, amino functional groups, imino functional groups, mercaptan functional groups, phosphine functional groups, and carbamate functional groups, characterized in that the degree of etherification, measured as the ratio <<(OR)/<<(U) of the amount of substance n(-OR) of alkoxy groups as substituents of the aldehyde carbon atoms of the multifunctional aldehyde chemically bound in the reaction product UA to the amount of substance <<(U) of cyclic urea U chemically bound in the reaction products, is less than 0.01 mol/mol, and to a process for the preparation of the reaction product UA.

The invention relates to a coating composition comprising a reaction product UA of at least one multifunctional aldehyde A with at least one cyclic urea U, and a crosslinkable resin having at least one kind of functional groups selected from the group consisting of hydroxyl functional groups, acid functional groups, amide functional groups, amino functional groups, imino functional groups, mercaptan functional groups, phosphine functional groups, and carbamate functional groups, characterized in that the degree of etherification, measured as the ratio <<(OR)/<<(U) of the amount of substance n(-OR) of alkoxy groups as substituents of the aldehyde carbon atoms of the multifunctional aldehyde chemically bound in the reaction product UA to the amount of substance <<(U) of cyclic urea U chemically bound in the reaction products, is less than 0.01 mol/mol, and to a process for the preparation of the reaction product UA.

The invention relates to a reaction product UA of at least one cyclic urea U and at least one multifunctional aldehyde A which reaction product has as substituents on the carbonyl carbon atoms of the aldehyde A at least one kind of functional groups selected from the group consisting of hydroxyl groups OH and alkoxy groups OR characterised in that the groups OR comprise at least two kinds of alkoxy groups OR.sup.1 and OR.sup.2, where R.sup.1 and R.sup.2 are both selected from the group consisting of linear, branched or cyclic alkyl groups having from one to twelve carbon atoms, where R.sup.1 and R.sup.2 may be the same or may be different from each other, to a process of making these, and to a method of use as crosslinker in coating compositions.

The invention relates to a reaction product UA of at least one cyclic urea U and at least one multifunctional aldehyde A which reaction product has as substituents on the carbonyl carbon atoms of the aldehyde A at least one kind of functional groups selected from the group consisting of hydroxyl groups OH and alkoxy groups OR characterised in that the groups OR comprise at least two kinds of alkoxy groups OR.sup.1 and OR.sup.2, where R.sup.1 and R.sup.2 are both selected from the group consisting of linear, branched or cyclic alkyl groups having from one to twelve carbon atoms, where R.sup.1 and R.sup.2 may be the same or may be different from each other, to a process of making these, and to a method of use as crosslinker in coating compositions.

Aspects of the present disclosure relate to Schiff base oligomers and uses thereof. In at least one aspect, an oligomer is represented by Formula (IV) wherein each instance of R.sup.9 is independently selected from the group consisting of alkyl, cycloalkyl, aryl, heteroaryl, and ether. Each instance of R.sup.28 and R.sup.29 of Formula (IV) is independently selected from the group consisting of hydrogen, alkyl, cycloalkyl, and aryl. Each instance of R.sup.33 of Formula (IV) is independently selected from the group consisting of alkyl, cycloalkyl, aryl, heterocyclyl, and a bond. Each instance of R.sup.41 of Formula (IV) is independently NH or a bond and each instance of R.sup.40 is independently NH or NHNH. Each instance of R.sup.42 of Formula (IV) is independently NH or a bond and each instance of R.sup.43 is independently NH or NHNH.