Abstract: A method for the preparation of a photocurable resin by a reaction comprising the following steps i) reacting a mixture of a novolak type epoxy resin (A) and a dicyclopentadiene-phenol glycidylether resin (B) with ii) an advancement component (C) containing at least 2 phenolic hydroxyl groups per molecule; iii) reacting with an unsaturated monocarboxylic acid (D); and iv) esterification of the unsaturated group containing resin obtained from the steps of i) to iii) with a polycarboxylic acid anhydride or a carboxylic acid anhydride (E) is disclosed.

Abstract: The present invention relates to a system and a resin relating to rapid prototyping. The System comprises: (a) an apparatus for producing a three-dimensional object from a light-sensitive material, wherein input optics (IO) and output optics (OO) facilitates transmission of light emitted from an illumination source via individually controllable light modulators (LM) of spatial light modulator (SLM) to an illumination area (IA), wherein said output optics (OO) enable focusing of the pattern of light from spatial light modulators (SLM) on an illumination area (IA); and (b) a resin composition comprising: (A) an acrylate component with (B) a methacrylate component and (C) a photo initiator.

Abstract: Process for the preparation of polyaromatic polyamines comprising the step of reacting formaldehyde with at least one monoaromatic monoamine and at least one monoaromatic compound containing at least two amino functions in the presence of an acidic catalyst where a) the total amount of di-aromatic compounds in the polyaromatic polyamine mixture is in the range from about 25 wt % to about 50 wt % and b) the amount of monoaromatic compound containing at least two amine functions is in the range 5 to 30 mole % relative to 100 mole % of the total amount of monoaromatic monoamines and c) the amount of acidic catalyst used in the preparation of the polyaromatic polyamine mixture is less than about 0.4 moles per mole of formaldehyde or formaldehyde equivalents.

Abstract: The invention relates to cured (meth)acrylate based adhesive composition, comprising at least two co-continuous phases of interpenetrating networks and at least two types of polymeric inclusions, in which one of the co-continuous phases comprises a polymer or copolymer based on at least one acrylic or methacrylic acid monomer or a derivative thereof. These compositions exhibit better facture toughness, especially at low temperatures.

Abstract: Elastomeric material having a density of more than 100 kg/m3 and comprising a matrix material comprising a plurality of urethane, urea and/or isocyanurate groups and having a hardblock content of more than 50% (hereinafter called matrix A); and a polymeric material which 1) has no groups which are able to form a urethane, urea or isocyanurate group with an isocyanate group, 2) is interpenetrating said matrix A, and 3) is the reaction product of a polyisocyanate and a polymer having an average molecular weight of more than 500 and one isocyanate-reactive group at an isocyanate index of 100-250 (hereinafter called polymeric material B); and wherein the relative amount of all ingredients used to make said matrix A and of said polymeric material B, on a weight basis, ranges from 10:90 to 90:10 and process for making such materials.

Abstract: A thermosetting composition comprising (a) (a) at least one phosphorous-free dihydrobenzoxazine component; (b) at least a sulfonium salt and (c) optionally a compound comprising at least an epoxy group is disclosed. Cured products made from these compositions have valuable chemical, physical and mechanical properties.

Abstract: An embodiment of a closed-cell polymeric rigid foam may be made using a one-shot method and a reaction system that includes a hydrofluoroalkene physical blowing agent and a polyol mixture having an aminic polyol. The hydrofluoroalkene blowing agent has 3 to 5 carbon atoms and a boiling point between 10° C. and 40° C. at 1 atmosphere pressure. Embodiments of rigid foams may have high closed cell content and are particularly well suited for thermal insulation.

Abstract: An embodiment of a closed-cell polymeric rigid foam may be made using a one-shot method and a reaction system that includes a hydrofluoroalkene physical blowing agent and a polyol mixture having an aminic polyol. The hydrofluoroalkene blowing agent has 3 to 5 carbon atoms and a boiling point between 10° C. and 40° C. at 1 atmosphere pressure. Embodiments of rigid foams may have high closed cell content and are particularly well suited for thermal insulation.

Abstract: Process for making a slabstock, visco-elastic, flexible, polyurethane foam which process comprises reacting a polyisocyanate and a polyol at an index of 60-95 and using a blowing agent, wherein 5-50 and preferably 10-40% by weight of the polyol used is castor oil. The foams and a polyol composition are claimed as well.

Abstract: Process for preparing diamino diphenyl methane and poly-(diamino diphenyl methane) comprising reacting aniline with formaldehyde in the presence of hydrogen chloride added in the gaseous form wherein the aniline contains 0.1 to 7 wt %, preferably 2 to 5 wt % of a protic chemical, preferably water.

Abstract: A polyisocyanurate-based coating for offshore applications is provided. The coating is a syntactic coating, obtainable by reacting a polyisocyanate compound with a compound containing isocyanate-reactive hydrogen atoms in the presence of a trimerisation catalyst and hollow objects, at an isocyanate index of at least and preferably more than 2000.

Abstract: The present invention relates to dyes of formula wherein R1 is 2-methoxyethyl, 2-ethoxyethyl or 2-(2-ethoxyethoxy)ethyl, R2 is C1-C8alkyl which is unsubstituted or substituted by one or more hydroxy groups, halogen atoms, C1-C4alkoxy groups, C2-C8alkoxyalkoxy groups, C1-C4alkyl-COO— groups or C1-C4alkyl-OCO— groups, R3 is methyl, hydroxy, halogen, —NH—SO2—R5 or —NH—CO—R6, wherein R5 is methyl or ethyl and R6 is methyl, ethyl, methoxymethyl or 2-methoxyethyl, and R4 is ethyl or n-propyl, and also to a process for their preparation and to their use in the dyeing or printing of semi-synthetic and, especially, synthetic hydrophobic fibre materials, more especially textile materials.

Abstract: The invention relates to cured (meth)acrylate based adhesive composition, comprising at least two co-continuous phases of interpenetrating networks and at least two types of polymeric inclusions, in which one of the co-continuous phases comprises a polymer or copolymer based on at least one acrylic or methacrylic acid monomer or a derivative thereof. These compositions exhibit better facture toughness, especially at low temperatures.

Abstract: Reactive dyes of the formula (1) in which Q1, X, V1, V2, B, T and R1, R2, R4 and R5 are defined in the claims and in the disclosure and wherein the reactive dyes are suitable for dyeing widely varying fiber materials, in particular cellulosic fiber materials and produce dyeings with good allround properties.

Abstract: Nanodispersions of inorganic clays in isocyanate may be created via pre-exfoliation, delamination, or both of the clay and subsequent mixing with isocyanate. In an embodiment, such an isocyanate nanodispersion is reacted with an isocyanate-reactive material or substrate to form a polyurethane nanocomposite.

Abstract: A process for converting tryptophan into kynurenine. The conversion of tryptophan into kynurenine is carried out by irradiating a substance comprising tryptophan with electromagnetic radiation comprising waves with wavelength in the range of 10 nanometer to 750 nanometer.

Abstract: Reactive dyes of formula wherein the variables are defined herein.

Abstract: Foamed material having a density of less than 100 kg/m3 and comprising a matrix material comprising a plurality of urea groups and having a hardblock content of more than 50% (hereinafter called matrix A); and a polymeric material which 1) has no groups which are able to form a urethane, urea or isocyanurate group with an isocyanate group, 2) is interpenetrating said matrix A, and 3) is a polymer having an average molecular weight of more than 500 which polymer comprises at least 50% by weight of oxyethylene groups based on the weight of this polymer (hereinafter called polymeric material B); and wherein the relative amount of all ingredients used to make said matrix A and of said polymeric material B, on a weight basis, ranges from 10:90 to 70:30 and process for making such materials.

Abstract: The invention relates to a process for dyeing polyester fibre material according to the exhaust method, which process comprises the following steps: (a) pre-treatment of the fibre material with one or more surfactants, (b) dyeing with one or more disperse dyes, and (c) reductive after-treatment with a hydroxyalkylsulfinic acid or a hydroxyalkylsulfinic acid salt, wherein steps (a), (b) and (c) are carried out in succession in a single liquor.

Abstract: Reactive dyes of the formula (1) in which Q1 is hydrogen, halogen or a radical of the formula R1, R2 and R3 independently of one another are hydrogen or C1-C4alkyl which is unsubstituted or substituted by hydroxyl, sulfo, carboxyl or sulfato, and R1 in formula (1) and R1 in formula (2a) have identical or different meanings and R2 in formula (1) and R2 in formula (2a) have identical or different meanings, (R4)0-1 and (R5)0-1 independently of one another are 0 or 1 identical or different substituents from the group consisting of C1-C4alkyl, C1-C4alkoxy, halogen and sulfo, A is hydrogen or C1-C4alkyl which is unsubstituted or substituted by hydroxyl, sulfo, carboxyl or sulfato, phenyl which is unsubstituted or substituted by C1-C4alkyl, C1-C4alkoxy, C2-C4alkanoylamino, hydroxyl, carboxyl, carbamoyl, sulfo or halogen, phenyl-C1-C2alkylene which is unsubstituted or substituted in the phenyl ring by C1-C4alkyl, C1-C4alkoxy, C2-C4alkanoylamino, hydroxyl, carboxyl, sulfo, carbamoyl or halogen, or C5-