The present invention provides a reaction mixture comprising a hot blend of a first isocyanate-based uretdione resin and a second isocyanate-based uretdione resin, a neutralized polyol and a tertiary amine catalyst, and optionally, an additive package selected from the group consisting of flow control additives, pigments (colorants), wetting agents, and solvents, wherein the first isocyanate and the second isocyanate are different. The isocyanate-based uretdiones that have been hot blended together produce coatings, adhesives, castings, composites, and sealants, which exhibit better performance properties (such as microhardness) than those coatings, adhesives, castings, composites, and sealants produced from the constituent isocyanate-based uretdiones alone.

The present invention provides a system comprising an allophanate composition comprising a neutralized polyol, a polyuretdione resin, a tertiary amine catalyst, an additive package, and a reducer and a neutralized basecoat comprising an acid scavenger and a pigment. The resulting allophanate system may be used to make coatings, adhesives, castings, composites, and sealants in which clear-coating on neutralized pigmented basecoats is much improved in comparison to non-neutralized basecoats.

The present invention provides a reaction mixture comprising a polyuretdione resin, a neutralized polyol, an acid-blocked tertiary amine catalyst, and optionally, an additive package selected from the group consisting of flow control additives, and wetting agents, and solvents, wherein the acid has a pK.sub.a of greater than 4.82. Compositions made from the reaction mixture of the present invention may be catalyzed at temperatures from room temperature to 130 C. and are particularly applicable in or as coatings, adhesives, castings, composites, and sealants with good performance and extended pot-life.

The present invention provides a reaction mixture comprising a polyuretdione resin, a neutralized polyol, a tertiary amine catalyst, and optionally, an additive package selected from the group consisting of flow control additives, wetting agents, and solvents. The present invention also provides methods of making allophanates which are particularly applicable in or as coatings, adhesives, castings, composites, and sealants with good performance.

The present invention provides a system comprising an allophanate composition comprising a neutralized polyol, a polyuretdione resin, a tertiary amine catalyst, an additive package, and a reducer; and a neutralized basecoat comprising an inorganic salt and a pigment. The present invention further provides a method of making an allophanate system comprising combining a neutralized polyol with a polyuretdione resin in the presence of a tertiary amine catalyst, an additive package, and a reducer to produce an allophanate composition, and contacting the allophanate composition with a neutralized basecoat comprising an inorganic salt and a pigment. The system may be used to make coatings, adhesives, castings, composites, and sealants in which clear-coating on neutralized pigmented basecoats is much improved in comparison to coating on non-neutralized basecoats.

The present invention provides an allophanate system made by a method comprising combining a neutralized polyol with a polyuretdione resin in the presence of an optional reducer to produce a one-component allophanate composition, and contacting the one component allophanate composition with a basecoat comprising a tertiary amine catalyst. The inventive allophanate system is particularly applicable in providing coatings, adhesives, castings, composites, and sealants with good performance.

The present invention provides an allophanate polymer system made by a method comprising combining a neutralized polyol with a polyuretdione resin in the presence of a reactive reducer comprising a reducing agent and a tertiary amine catalyst to produce a clear-coat, and contacting the clear-coat with a basecoat comprising a tertiary amine catalyst. The reaction between the polyol and the polyuretdione will proceed after the reactive reducer reduces the viscosity of the one component clear-coat formulation to appropriate levels. The inventive allophanate polymer system is particularly applicable in providing coatings, adhesives, castings, composites, and sealants with good performance.

The present invention provides a reaction mixture comprising a blend of a first isocyanate-based uretdione-containing resin and a second isocyanate-based uretdione-containing resin, a neutralized polyol and a tertiary amine catalyst, and optionally, an additive package selected from the group consisting of flow control additives, pigments (colorants), wetting agents, and solvents, wherein the first isocyanate and the second isocyanate are different. The first isocyanate-based uretdione-containing resin and the second isocyanate-based uretdione-containing resin may be cold blended or hot blended. Coatings, adhesives, castings, composites, and sealants made from hot blended formulations exhibit superior performance over those made from cold blended formulations.

A thermosetting coating composition includes a hydroxyl group-containing resin (A), a blocked polyisocyanate curing agent (B), and an amine compound (C) represented by the formula (1). In the formula (1), R.sup.1 to R.sup.5 each independently represents a hydrogen atom or an organic group having one or more carbon atoms. The organic group may contain one or more atoms selected from the group consisting of oxygen atoms, nitrogen atoms, sulfur atoms, and halogen atoms.

##STR00001##

Provided is an amidate compound represented by the formula (1):

##STR00001##

wherein A is a substituted or unsubstituted hydrocarbon group, n is an integer of 1 or more, and D is a nitrogen-containing organic group represented by the formula (2):

##STR00002##

wherein R.sup.1, R.sup.2, and R.sup.3 are the same or different, and are each a hydrocarbon group that may contain a heteroatom; some or all of R.sup.1, R.sup.2, and R.sup.3 may be bonded together to form a ring structure; X is a nitrogen atom, an oxygen atom, or a sulfur atom; and a is 0 or 1, wherein a is 1 when X is a nitrogen atom, and a is 0 when X is an oxygen atom or a sulfur atom.