Abstract: A fibre composite impregnated with an epoxy resin matrix and comprising a benzylidenamine compound has advantageous properties.

Abstract: A positive type, photosensitive epoxy resin composition comprising (a) an epoxy resin having two or more epoxy groups in one molecule, (b) a modified phenolic resin having a triazine ring, (c) a latent basic curing agent and (d) a photosensitive acid generator; and a preferably multilayered printed circuit board of buildup mode using said composition as an insulating layer.

Abstract: Epoxy acrylates of the formulae (A), (B) and epoxy acrylate mixtures comprising at least one of the compounds (A) or (B) are novel and find use in coating materials or adhesives featuring high UV stability

Abstract: Flame retardant compositions are disclosed which comprise (a) at least one particulate material which expands on the application of heat and (b) at least one particulate nano-filler, together with at least one polymer and/or at least one curable monomer or oligomer. The compositions may also contain certain silicon-based materials. Flame-retardant compositions comprising polyorganosiloxanes containing one or more functional groups selected form amino, hydroxyl, methacrylic, acrylic and epoxy groups, are also disclosed.

Abstract: Compounds of formula (I) or (II), wherein R1 is C1–C18alkyl; C5–C12cycloalkyl that is unsubstituted or substituted by one or more C1–C6alkyl groups or C1–C6alkoxy groups; C5–C22aryl that is unsubstituted or substituted by one or more C1–C6alkyl groups or C1–C6alkoxy groups; or C7–C30aralkyl that is unsubstituted or substituted by one or more C1–C6alkyl groups or C1–C6alkoxy groups, and the radicals R2 to R13 are each independently of the others hydrogen; —NO2; dialkylamino; alkylthio; alkylsulfonyl; halogen; C1–C18alkyl; C1–C18alkoxy; C1–C18alkoxyalkyl; C5–C12cycloalkyl that is unsubstituted or substituted by one or more C1–C6alkyl groups or C1–C6alkoxy groups; C5–C22aryl that is unsubstituted or substituted by one or more C1–C6alkyl groups or C1–C6alkoxy groups; or C7–C30aralkyl that is unsubstituted or substituted by one or more C1–C6alkyl groups or C1–C6alkoxy groups, are suitable as flame-proofing agents for thermoplastic or thermosetting polymers

Abstract: The present invention relates to adducts obtainable by reaction of: A) an amine compound containing 2 or more than 2 amino groups: with B) a polyalkylene glycol monoglycidyl ether of general formula (I), in which R independently of one another (for n>1), is an —H or —CH, radical, and n=1 to 50, characterized in that the reaction ratio of components A) and B) is selected in such a way that the resultant adduct contains 2 or more than 2 amine hydrogen groups: to curable compositions based on these adducts with epoxy resins, and to the use of these curable compositions as casting resin, adhesive, matrix resin, tooling resin or as coating composition, in particular for self-flowing coatings.

Abstract: A method of a seamless model free of bond lines. The method includes the sequential steps of providing a substructure having an exposed outer surface, applying a modelling paste to a structure support in the form of a continuous layer, curing the applied modelling paste, and machining the cured layer of modelling paste to the desired contour. The modelling paste a low density curable composition prepared from thixotropic epoxy or polyurethane containing microballoons.

Abstract: The present invention relates to a liquid, radiation-curable composition containing a cationically activated component, a cationic photoinitiator or a mixture of cationic photoinitiators, at least an effective amount of a compound having at least one terminal and/or pendant unsaturated group and at least one hydroxyl group in its molecule. The composition is free of free radical initiator. The compositions described herein are particularly useful in stereolithography process systems for producing three-dimensional articles.

Abstract: Mannich bases as curing agents for epoxy resins, characterized in that to prepare the Mannich base an isolated amine adduct is used obtainable by reacting a) an amine containing at least three active amine hydrogens with b) an epoxide compound containing on average one or more than one epoxide group in the molecule, optionally using a solvent, there being an excess of a) relative to reactive groups of components a) and b), and subsequently the adduct formed is isolated from free amines. Curable epoxy resin compositions comprising these Mannich bases are suitable owing to good obtainable surface properties in particular for coating, adhesively bonding and enhancing metallic and mineral substrates, as adhesive and sealant, and for producing mouldings and sheetlike structures.

Abstract: Matting agent for thermally curable systems, especially for powder coating compositions, that comprise at least, one carboxyl-containing polymer as binder and at least one epoxy-group-containing compound as cross-linking agent, wherein the matting agent comprises at least the following constituents: (a) a metal salt or a metal complex of an organic compound, the metal being selected from the group magnesium, calcium, strontium, barium, zinc, aluminium, tin and antimony, and (b) a polymerisation product of monomers, the monomers including epoxy-group-containing monomers and the epoxy value of the polymerisation product being from 0.1 to 8 equivalents of epoxy groups, and overall the ratio of epoxy equivalents of component (b) to metal equivalents of component (a) being from 0.2 to 120.

Abstract: The present invention relates to UV-curable compositions, the process for preparing the compositions and to the use of the curable compositions. The compositions contain: a) at least one oxetane compound; b) at least one polyfunctional cycloaliphatic epoxy compound; c) at least one multifunctional hydroxy compound; and d) at least one curing agent.

Abstract: The invention relates to a composition compriseing an at least bifunctional acidic prepolymer (A) curable under the action of heat an compound of the formula (I) in which A is a mono- to tetravalent, saturated or unsaturated alkyl group having 1 to 60 carbon atoms, a mono- to tetravalent aryl group, a mono- or diaiylamino group having 1 to 4 carbon atoms, an alkenylene group having 2 to 4 carbon atoms, a carboxyalkylene group or an alkoxycarbonylalkylene group having 1 to 4 carbon atoms, n is 1 or 2, m is 2-n, q is a number from 0 to 3, R1 is hydrogen or an alkyl group having 1 to 5 carbon atoms or a hydroxyalkyl group having 1 to 5 carbon atoms and X is a radical of the formula in which R3 and R4 are identical or different and, independently of one another, are hydrogen, a straight-chain or branched alkyl group or hydroxyalkyl group having 1 to 5 carbon atoms, or R3 and R4, together with the carbon atom to which they are bonded, form a cycloaliphatic ring.

Abstract: A method for making a one-component epoxy resin system comprises reacting (A) an epoxy resin and (B) an amine solidifying system present in insufficient quantities to cause gelation in the presence of a latent hardener (C) and an expanding agent (E), each of which remains unreacted under the reaction conditions for (A) and (B), to yield a product with a Kofler Heat Bank melting point of less than 55° C. and a melting point stability of at least six months at normal workshop temperatures.

Abstract: A process for surface pretreatment, including providing a clean metal surface which is aluminum or an aluminum alloy; applying a composition including an organosilane to the clean metal surface to form a coated surface; and exposing the coated surface to a laser which produces an elevated temperature on the coated surface.

Abstract: A photosensitive composition of (a) a compound of formula (Ia) or (Ib) and (b) a bifunctional acrylate or methacrylate.

Abstract: A carboxyl group-containing epoxy acrylate is prepared by the reaction of an epoxy resin advanced with an aromatic biphenol compound which is reacted with a polycarboxylic acid anhydride in the presence or absence of a catalyst and a polymerization inhibitor at an elevated temperature. The carboxyl group-containing epoxy acrylate is mixed with a photoinitiator to obtain a photoresist formulation.

Abstract: The invention relates to the process for the preparation of liquid reaction products of cycloaliphatic epoxides with mono- or multifunctional hydroxy compounds. The process comprises reacting a polyfunctional cycloaliphatic epoxy resin with a mono- or multifunctional hydroxy compound in the presence of a heterogeneous surface-active catalyst. The invention also relates to curable compositions containing the product obtained by the process.

Abstract: A composition comprising (a) an epoxy resin, (b) an OH-terminated polysiloxane, (c) a cyclic polysiloxane and (d) a non-ionic, fluoroaliphatic surface-active reagent, exhibits excellent hydrophobicity properties and can be used as electrical insulating material.

Abstract: Compounds of formula Ia or Ib wherein A is an (n+1)-valent aliphatic, cycloaliphatic, araliphatic or aromatic radical and n is an integer from 0 to 5, E is an (m+1)-valent aliphatic, cycloaliphatic, araliphatic or aromatic radical and m is an integer from 0 to 3, X is —O—, —COO— or —CHR4—, R1 and R2 are, each independently of the other, hydrogen or methyl, R3 is hydrogen, and R5 is a monovalent aliphatic, cycloaliphatic, araliphatic or aromatic radical, are highly reactive curing agents for epoxy resins and yield cured products having improved resistance to chemicals.

Abstract: Epoxy acrylates and carboxyl group-containing epoxy acrylates of formulae III and IV of the claims that are relatively polymolecular and are chemically crosslinkable can be used in photoresist formulations with the additional use of highly polymerized polymer binders. Such resist formulations are used in particular in the field of printed circuit boards and printing plates, are applicable from aqueous medium, are almost tack-free and have very good edge coverage, especially on conductors.