The disclosure generally provides high-molecular-weight thermoplastic polyester-based urethanes (TPEUs). In some embodiments, the component monomers of the TPEUs are entirely derived from renewable sources. The disclosure also provides methods of making high-molecular-weight TPEUs, and, in particular, methods for achieving such high molecular weights. The disclosure also provides certain uses of such TPEUs. Entirely lipid-derived segmented thermoplastic TPEU elastomers with rubber-like properties such as low modulus and high elongation were produced by incorporating 1,9-nonanediol (ND) as chain extender with oleic acid derived polyester diols (PEDs) and 1,7-heptamethylene diisocyanate (HPMDI). Enhanced elastomeric properties were achieved by optimizing hydrogen bond density and phase separation of the TPEU via customized polymerization protocols. The novel TPEUs showed extensive degradation under hydrothermal ageing in water at 80 C. and achieved a tensile half-life in one day of immersion. For the first time, entirely lipid-derived TPEU elastomers with thermal and mechanical properties comparable to commercially available petroleum-based analogues and a controlled life-cycle were achieved, demonstrating the viability of potential alternatives to petroleum-derived elastomers and credible potential in biomedical applications especially as bio-resorbable implants or tissue scaffolds.

The present invention relates to adhesive formulations based on uretdione-group-comprising polyaddition compounds that are free of isocyanate groups and monomeric polyisocyanates, and to the use thereof for the production of adhesive bonds between substrates, in particular for the production of flexible film composites.

The present invention relates to adhesives which are characterized in that they cure in the absence of water and at room temperature with the formation of isocyanurate groups.

The object of the present invention is to provide a hard coating composition for a metal substrate, including a film-forming resin component which contains a urethane (meth)acrylate obtained by reacting a polyisocyanate compound, a polyol, and a (meth)acrylate monomer having a hydroxyl group, wherein the polyisocyanate compound is hydrogenated xylylene diisocyanate and/or dicyclohexylmethane diisocyanate.

There is provided a photosensitive resin composition which enables production of a lithographic printing plate precursor having a non-image portion which has good solubility in an alkali aqueous solution and which enables production of a lithographic printing plate having excellent printing durability, excellent chemical resistance, and, in particular, excellent printing durability at the time of using a low quality print material, a lithographic printing plate precursor obtained by using the photosensitive resin composition, and a method for producing a lithographic printing plate.

The photosensitive resin composition contains a polymer compound having a linking group represented by Formula A-1 in the main chain; and an infrared absorbing material. In Formula A-1, R.sup.1 and R.sup.2 each independently represent a hydrogen atom or a monovalent organic group, and X.sup.1 is a specific linking group.

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A curable composition including: a component (a): a polycarbonate polyol having a hydroxyl value of 40 to 75 mgKOH/g; a component (b): a polycarbonate polyol having a hydroxyl value of 100 to 280 mgKOH/g; and a component (c): a polyisocyanate having an average number of functional groups per molecule, of 2 to 6.

The present application provides a storage-stable polyisocyanate composition and a preparation method. The polyisocyanate composition is obtained by selecting one or more diisocyanate from aliphatic diisocyanates and alicyclic diisocyanates, and reacting same with an alcohol compound; the polyisocyanate composition contains an isocyanurate group, a uretdione group, a carbamate group, and an allophanate group; within the polyisocyanate composition, the molar ratio of the carbamate group/(uretdione group+isocyanurate group) is 0.01-0.2, and preferably 0.01-0.1. Compared to existing techniques, the present application has the advantage of a noticeable increase in system viscosity of uretdione polyisocyanate during storage. With the present application, by means of controlling the ratio of the carbamate group/(uretdione group+isocyanurate group) within the system, the increase in viscosity of a product during storage is inhibited, thereby improving the storage stability of the product.

The invention relates to a method for producing a blocked polyisocyanate, having the steps of reacting A) at least one polyisocyanate component, which has at least isocyanurate and/or iminooxadiazindione structures, with B) at least one branched aliphatic diol and C) at least one secondary amine with aliphatic, cycloaliphatic, and/or araliphatic substituents. The invention is characterized in that the component B) is used in a quantity of more than 2 wt. % based on the total quantity of the components A) and B), the component C) is used in a quantity which corresponds to at least 95 mol. % of the isocyanate groups mathematically still present after the reaction of the components A) and B), and as the polyisocyanate component A), polyisocyanates are used which are produced by modifying simple linear aliphatic, cycloaliphatic, araliphatic, and/or aromatic diisocyanates and which have at least isocyanurate and/or iminooxadiazindione structures, wherein >70 equiv. %, based on the NCO content, is used for the modification process. The invention also relates to said blocked polyisocyanates.

The present invention relates to curable polyurethane polymers made from renewable materials. In particular isosorbide derived from glucose is used. These renewable materials may be formed into curable polyurethane polymer compositions having different chemical functionalities and cure mechanisms.

The invention relates to a one-component burn-in system comprising A) a blocked polyisocyanate component containing at least one reaction product of a) at least one polyisocyanate component, which has at least isocyanurate and/or iminooxadiazinedione structures, b) at least one branched aliphatic diole, and c) at least one secondary amine with aliphatic, cycloaliphatic, and/or araliphatic substituents, wherein the component b) is used in a quantity of more than 2 wt. % based on the total quantity of the components a) and b), and the component c) is used in a quantity which corresponds to at least 95 mol. % of the isocyanate groups mathematically still present after the reaction of the components a) and b), B) at least one binder which is reactive to isocyanate groups and comprises at least two isocyanate-reactive groups per molecule on statistical average, C) optionally catalysts, and D) optionally solvents and/or optionally auxiliary agents and additives.