A process for manufacturing an object involves the steps of: I) depositing a radically cross-linked resin on a carrier so that a layer of a structuring material joined to the carrier is obtained, said layer corresponding to a first selected cross-section of the object; II) depositing a radically cross-linked resin on a previously applied layer of the structuring material so that an additional layer of the structuring material is obtained which corresponds to a further selected cross-section of the object and which is joined to the previously applied layer; III) repeating step II) until the object is formed, wherein the deposition of a radically cross-linked resin in steps I) and II) includes the application of a radically cross-linkable resin to the carrier or the previously applied layer and is performed at least in step II) by applying energy to a selected region of a radically cross-linkable resin, corresponding to the selected cross-section of the object, the radically cross-linkable resin having a viscosity (23 C., DIN EN ISO 2884-1) of 5 mPas to 100,000 mPas. The invention further relates to the use of such a resin in an additive manufacturing process. The radically cross-linkable resin comprises a curable component which is obtained by reacting a polyisocyanate or a polyisocyanate descendant containing at least one oxadiazine trione group (formula I) with a compound that contains acrylate, methacrylate or vinyl ether double bonds and 25 Zerewitinoff active H atoms.

The present technology provides a curable resin composition that contains a urethane prepolymer having an isocyanate group, a coated amine formed by using a filler to coat solid amine having a melting point of 50 C. or higher, an isocyanate group-containing compound having an isocyanate group bonded to an aliphatic hydrocarbon group and having a hydrolyzable silyl group or (meth)acryloyl group, and a tertiary amine compound.

The invention relates to an aromatic allophanate polyisocyanate based on aromatic diisocyanates, containing a) 15 mol-% of allophanate groups, based on the sum of urethane, allophanate and isocyanurate groups, b) 50 mol-% of isocyanurate groups, based on the sum of urethane, allophanate and isocyanurate groups and c) 1.5% by weight of monomeric diisocyanates, based on the total weight of the aromatic allophanate polyisocyanate. Furthermore, the invention relates to a process for producing aromatic allophanate polyisocyanates and their use in polyisocyanate compositions or two-component systems.

Disclosed is an oligomer or polymer obtained by reacting at least one monomeric, oligomeric or polymeric isocyanate having two or more isocyanate groups with 2-hydroxy-3-butenoic acid and/or at least one alkyl ester of 2-hydroxy-3-butenoic acid. A composition comprising a said oligomer or polymer is also disclosed.

A hardcoat composition is described comprising urethane (meth)acrylate oligomer having a first functional groups; an acrylic polymer having second functional groups; wherein the first and second functional groups form a hydrogen bond; and silica nanoparticles. The hardcoat composition may be cured by actinic radiation, upon which the acrylic polymer may be removed by solvent extraction. Also described are articles comprising the cured hardcoat described herein disposed on a surface of a substrate and methods of making an article.

A construction element A comprises a) at least one pane of glass B; and b) a frame C made of a non-coated thermoset polymeric composite material with a polymer matrix which is based on at least 50 wt.-% of an aliphatic polyisocyanate; and c) optionally at least one sealant D that connects the pane of glass B with frame C. It is characterized by an excellent long term weathering resistance, high durability and low maintenance efforts.

Disclosed is an imine-type quaternary ammonium salt catalyst, wherein the catalyst has a general structure formula shown by formula I below; in the formula, R1 and R2, respectively, are independently selected from a C1-C20 linear alkyl or a branched C3-C20 alkyl, and a C1-C20 hydroxylalkyl, a C3-C8 cycloalkyl, and arylated alkyl; R3 is a linear or branched alkyl, cycloalkyl or aryl; and R4 is hydrogen, aryl, a linear C1-C15 alkyl or branched C3-C15 alkyl. Also disclosed are a method for preparing the catalyst and a polyisocyanate composition prepared therefrom. The catalyst, by introducing an imine structure, on the basis of ensuring high catalytic activity thereof, is allowed to have properties of high temperature decomposition and inactivation, and when applied to the synthesis of polyisocyanate, can effectively prevent the risk of explosive polymerization caused by an uncontrolled reaction.

Quinolines, polyquinolines, polybenzoquinolines, molecular segments of fullerenes and graphene nanoribbons, and graphene nanoribbons and processes for producing such materials are provided. The processes utilize a form of an aza-Diels-Alder (Povarov) reaction to first form quinolines and/or polyquinolines. In some such embodiments polyquinolines thus produced are used to form graphene nanoribbon precursors, and molecular segments and graphene nanoribbons. In many such embodiments the graphene nanoribbon precursors are formed from polybenzoquinolines.

The present invention provides a semicarbazide composition containing a semicarbazide compound (S) derived from an isocyanate compound (N) and a hydrazine, wherein the semicarbazide compound (S) has a hydrophilic functional group (a) and a structure (b) represented by the following formula (I), and a molar ratio (b)/(a) of the structure (b) to the hydrophilic functional group (a) is 0.1 or more and 10.0 or less, and the like.

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The present invention relates to a coating composition and a method for preparing the same, a coating method and use thereof as well as a product coated with the coating composition. The coating composition comprises: A) a hydroxyl-containing component consisting of: a) a polyester-modified polycarbonate polyol having a number-average molecular weight of 500-6000 g/mol, the amount of which is greater than 50 wt. % based on that the weight of the hydroxyl-containing component is 100 wt. %, b) an optional polyester polyol having a hydroxyl content of not less than 10 wt. % as measured in accordance with DIN EN ISO 4629-2, and c) an optional polyacrylate polyol; and B) a polyisocyanate; wherein the equivalent ratio of isocyanate groups to hydroxyl groups of the composition is 0.5-1.2. A coating formed from the coating composition provided by the present invention has good appearance and adhesion as well as good reflowing, and especially can rapidly reflow at normal temperature.