The present invention provides a polyisocyanate composition wherein the composition is obtained from an aliphatic diisocyanate unit including 1,6-diisocyanatohexane, and has an isocyanurate group, a uretdione group, a uretonimine group, and an iminooxadiazinedione group, and the molar ratio of the uretonimine group to the isocyanurate group is 0.0010 to 0.0050, and the molar ratio of the iminooxadiazinedione group to the isocyanurate group is 0.00050 to 0.30.

The present disclosure provides a polymeric material including a polymerized reaction product of a polymerizable composition including components and has a solids content of 90% or greater. The components include a uretdione-containing material including a reaction product of a diisocyanate reacted with itself; a first hydroxyl-containing compound; an optional second hydroxyl-containing compound having a single OH group; an epoxy component; and an accelerator. The first hydroxyl-containing compound has more than one OH group and the optional second hydroxyl-containing compound is a primary alcohol or a secondary alcohol. The present disclosure also provides a two-part composition, in which a polymeric material is included in the first part and the second part includes at least one thiol-containing compound. Further, a method of adhering two substrates is provided, including obtaining a two-part composition; combining at least a portion of the first part with at least a portion of the second part to form a mixture; disposing at least a portion of the mixture on a first substrate; and contacting a second substrate with the mixture disposed on the first substrate. The disclosure also provides a polymeric material and a method of making a two-part composition. Advantageously, two-part compositions according to the present disclosure can be used as coatings and adhesive systems with handling and performance similar to existing two-part urethane systems, but with less sensitivity to water.

The invention relates to a method for producing a polyisocyanate polymer and to the polyisocyanate polymer obtainable from the method and to the use thereof as part of a two-stage method for producing a polyisocyanurate plastic, in particular for producing coatings, films, semi-finished products or molded parts containing such a polyisocyanurate plastic.

The present disclosure provides a polymeric material including a polymerized reaction product of a polymerizable composition including components and has a solids content of 90% or greater. The components include a uretdione-containing material including a reaction product of a diisocyanate reacted with itself; a first hydroxyl-containing compound; an optional second hydroxyl-containing compound having a single OH group, wherein; and an epoxy component. The epoxy component is present in an amount of 35% by weight or greater, based on the total weight of the polymerizable composition. The first hydroxyl-containing compound has more than one OH group and the optional second hydroxyl-containing compound is a primary alcohol or a secondary alcohol. The present disclosure also provides a two-part composition, in which the polymeric material is included in the first part and the second includes at least one amine. Further, a method of adhering two substrates is provided, including obtaining a two-part composition; combining at least a portion of the first part with at least a portion of the second part to form a mixture; disposing at least a portion of the mixture on a first substrate; and contacting a second substrate with the mixture disposed on the first substrate. The disclosure also provides a polymeric material and a method of making a two-part composition. Advantageously, two-part compositions can be used as coatings and adhesive systems with handling and performance similar to existing two-part urethane systems, but with less sensitivity to water, or with performance similar to toughened epoxy systems.

A process for preparing a thermoplastic polymer involves reacting at least components (a) to (b), in the presence of a catalyst composition (c). Component (a) is an isocyanate composition containing at least one uretdione diisocyanate (a-i), and component (b) is an epoxide composition containing at least one diepoxide (b-i). The catalyst composition (c) contains at least one ionic liquid (c-i), preferably selected from 1-ethyl-3-methyl imidazolium bromide, 1-benzyl-3-methyl imidazolium chloride. 1-butyl-1-methylpiperidinium chloride, 1-ethyl-2,3-dimethylimidazolium bromide, 1-(2-hydroxyethyl)-3-methyl imidazolium chloride, butyl-1-methylpiperidinium acetate, or mixtures of two or more thereof. A thermoplastic polymer obtained or obtainable from the process is useful for the preparation of a fibre or a molded article or as a modifier for another thermoplastic material.

The invention relates to a method for producing a polyisocyanate polymer and to the polyisocyanate polymer obtainable from the method and to the use thereof as part of a two-stage method for producing a polyisocyanurate plastic, in particular for producing coatings, films, semi-finished products or molded parts containing such a polyisocyanurate plastic.

The present invention relates to innovative catalysts for producing oligomeric polyisocyanates. These catalysts comprise polyhedral silsesquioxanes to which cyclic phosphorus(III) or phosphorus(V) compounds have been coupled.

A polyisocyanate composition includes a polyisocyanate having an isocyanurate group, derived from one or more types of diisocyanates selected from the group consisting of an aliphatic diisocyanate and an alicyclic diisocyanate, UV absorption peaks of a trimeric equivalent of the diisocyanate and a tetrameric equivalent of the diisocyanate being present in a spectrum of the polyisocyanate composition measured by gel permeation chromatography, the ratio ((B)/(A)) of the height (B) of the UV absorption peak of the tetrameric equivalent of the diisocyanate to the height (A) of the UV absorption peak of the trimeric equivalent of the diisocyanate being 0.01 to 3, and the content of a volatile component produced from storage for three months at 60 C. being 0.3% by mass or less with respect to the total mass of the polyisocyanate composition prior to storage, the volatile component having been removed from the polyisocyanate composition in advance.

The present invention provides a composition comprising a polyuretdione resin; and a blocked amine; and optionally, an additive package (e.g. flow control, wetting agent) and a solvent. The present invention further provides a method of forming a biuret comprising the steps of: unblocking a blocked amine in the presence of moisture; and crosslinking the unblocked amine with a polyuretdione resin. The compositions of the present invention are particularly applicable in or as coatings, adhesives, castings, composites, and sealants with good performance and extended pot-life.

The present invention relates to aqueous, curable composition, comprising or consisting of A) at least one uretdione prepolymer, which comprises at least one uretdione group, and which is obtainable by reacting A1) at least one uretdione polyisocyanate having an isocyanate functionality of at least 2.0, whereby said uretdione polyisocyanate is obtained from at least one aliphatic polyisocyanate, with A2) at least one compound comprising at least one Zerewitinoff-active group, and A3) at least one reactant, which comprises at least one Zerewitinoff-active group and being different from A2 or which is H.sub.2O, preferably in the presence of at least one catalyst, to obtain the uretdione prepolymer, wherein the prepolymer has an acid number of at most 4 mg KOH/g, preferably determined according to DIN EN ISO 2114:2002-06 as 37 wt. % aqueous dispersion; and B) optionally at least one compound, which comprises at least one Zerewitinoff-active group; and C) at least one azolate-compound. Furthermore, the present invention pertains to a process for curing the composition of the present invention on a substrate and a cured article obtained by this process. Moreover, the invention relates to the use of the compositions of the present invention for coatings, adhesives and/or sealants.