Abstract: A method for the preparation of prepregs comprisesI. impregnating a fibrous reinforcing material with a liquid composition containing an epoxide resin, a photopolymerizable compound, and with a heat-activated curing agent for epoxide resins, andIi. in the absence of a substance which gives rise to a substantial degree of photoinduced polymerization through consumption of epoxide groups, exposing the impregnated material to actinic radiation such that the composition solidifies due to photopolymerization of the said photopolymerizable compound while the epoxide resin remains substantially in the thermosettable state.Preferably the liquid composition also contains a dual-functional substance which has in the same molecule both an epoxide group and a dissimilar group through which the substance can be photopolymerized. The prepreg, optionally after shaping and/or stacking, is heated to cure the epoxide resin and, if used, the photopolymerized dual-functional substance.

Abstract: A process for the production of halogenated copper phthalocyanine by heating a mixture of dry crude copper phthalocyanine, an organic solvent, a halogenating agent, a halogen transfer agent and, as catalyst, chlorosulphonic acid.

Abstract: Compounds having the formula ##STR1## wherein R.sub.1 and R.sub.2 are lower alkyl or cycloalkyl,R.sub.3 is hydrogen, alkyl, methoxyethyl, alkenyl, propargyl, benzyl or alkyl substituted benzyl,R.sub.4 is alkylene, alkyl-thio-alkyl or alkyl-oxo-alkyl,M is hydrogen or a metal, andz has a value of from 1 to 4,Are good light stabilizers. The carboxylic acids are prepared, for example, from 2,2,6,6-tetramethylpiperidin-4-ol and sebacic acid to give o-mono(2,2,6,6-tetramethylpiperidin-4-ol)sebacate. The metal salts of the acids are readily prepared by reacting the acids or their salts with a reactive form of the metal or metal complex.

Abstract: A pigment composition comprising pigment and at least 5% by weight based on the weight of composition of a complex formed from one or more non ionic polyether surfactants based on ethylene oxide and a polymeric carboxylic acid having a molecular weight of at least 1500.

Abstract: The agents comprise a mixture of(A) an adduct of a polyethylenepolyamine or a polypropylenepolyamine with an aliphatic or aromatic diglycidyl ether and(B) an aminoalcohol containing at least two aliphatic amino-hydrogen atoms, especially an adduct of a poly(aminoamide) with certain monoepoxides.(A) has the formula ##STR1## and (B) the formula ##STR2## where R.sup.1 represents a C.sub.2 -C.sub.60 hydrocarbon radical having amino or amido nitrogen in the chain, optionally substituted by amino or alcoholic hydroxy groups, being such that (B) contains at least two aliphatic amino-nitrogen hydrogen atoms,R.sup.2 represents ##STR3## R.sup.3 represents the residue (mol. weight 56 to 5,000) of an at least dihydric alcohol or phenol,P is an integer of average value 1 to 1.5,q is an integer of 1 to 5,R.sup.4 represents a hydrogen atom, C.sub.1 -C.sub.3 alkyl, phenyl, cresyl, chlorophenyl group, or a group R.sup.5 OCH.sub.2 --,R.sup.5 represents a C.sub.1 -C.sub.

Abstract: Curable compositions, suitable for use as surface coatings, comprise(i) 100 parts by weight, calculated on its resin-forming solids content, of an ammonium or amine salt of a carboxyl-containing polyester which contains, on average, at least two mercaptan groups directly attached to aliphatic carbon atoms per molecule and at least one aliphatic group of 8 or more carbon atoms,(ii) from 5 to 100 parts by weight, calculated on its resin-forming solids content, of a water-soluble aminoplast containing, per average molecule, directly attached to an amido nitrogen atom or atoms of urea or of a polyamino-1,3,5-triazine, at least two groups of formula --CH.sub.2 OR, where R denotes a hydrogen atom or a methyl or ethyl group, and(iii) water.

Abstract: Monoketals of esters and amides of aromatic .alpha.,.beta.-dioxocarboxylic acids having the formulaR -- CO -- C(OR.sub.1)(OR.sub.2) -- COX].sub.mwherein m is 1 or 2, R is a mono- or divalent aromatic residue, R.sub.1 and R.sub.2 are monovalent organic residues and X is an alkoxy or amino groups, are photoinitiators for the UV-curing of resins. Examples for such resins are acrylates, methacrylates or unsaturated polyesters. The most important application for such photochemical curing is the field of coatings and printing inks.

Abstract: Azo pigments of the formula ##STR1## wherein A represents the radical of a heterocyclic diazo component are valuable pigments coloring plastics, melts, spinning solutions, lacquers paints and printing inks in yellow to red shades of great color strength and excellent fastness properties.

Abstract: Compounds having the formula ##STR1## wherein R.sub.1 and R.sub.2 are lower alkyl or cycloalkyl,R.sub.3 is hydrogen, alkyl, methoxyethyl, alkenyl, propargyl, benzyl or alkyl substituted benzyl,R.sub.4 is lower alkylene,M is a metal, andZ has a value of from 1 to 4,Are good light stabilizers. The carboxylic acids are prepared, for example, from 2,2,6,6-tetramethyl-piperidin-4-ol and succinic acid to give o-mono(2,2,6,6-tetramethyl-piperidin-4-ol)succinate. The metal salts of the acids are readily prepared by reacting the acids or their salts with a reactive form of the metal or metal complex.

Abstract: A composition comprising an organic material and, as stabiliser, a compound having the formula ##STR1## and salts thereof, wherein R.sub.1 and R.sub.2 are the same or different and each is an alkyl residue having from 1 to 12 carbon atoms or R.sub.1 and R.sub.2, together with the carbon atom to which they are bound, form a cycloalkyl residue having from 5 to 12 carbon atoms in the ring, Y is 0, hydrogen, a straight-or branched alkyl residue having from 1 to 20 carbon atoms, an alkenyl or alkynyl residue having from 3 to 12 carbon atoms, an aralkyl residue having from 7 to 12 carbon atoms or a group having the formula ##STR2## wherein R is hydrogen, or a methyl or phenyl residue and R.sub.3 is hydrogen or a straight- or branched chain alkyl residue having from 1 to 12 carbon atoms.

Abstract: Process for dyeing thermoplastics having no reducing action, in which process there are used Mg, Zn, Cd and Ni salts of azo dye sulphonic acids of the formula ##STR1## wherein A represents a phenyl or naphthyl group optionally substituted by halogen atoms, by alkyl or alkoxy groups containing 1 - 4 C atoms, or by trifluoromethyl groups, X represents a hydrogen atom or a carboxy group, and n represents the number 1 or 2.The resulting dyeings are characterized by excellent fastness properties, especially fastness to light and to migration.

Abstract: Ultraviolet light-curable adhesive compositions are prepared from diacrylate hydantoin compounds, a photoinitiator and a silane. The adhesives are useful for bonding substrates, one of which is transparent to ultraviolet light.

Abstract: An arylaminoanthraquinone of the formula ##STR1## in which one X, in the 5- or 8-position, denote either the radical of the formula ##STR2## or a hydrogen atom, the other X denote hydrogen atoms, alkoxy groups with 1-4 C atoms, aryloxy, arylmercapto or acylamino groups, one Y denotes a nitro group and the other denotes a hydrogen atom, one or two Z which are not adjacent to the nitro group denote chlorine atoms and the remaining Z denote hydrogen atoms, and the Q denote hydrogen or halogen atoms which is useful for coloring high-molecular material.

Abstract: Disazo pigments of the formula ##STR1## WHEREIN X and Y denote hydrogen or halogen atoms, alkyl or alkoxy groups containing 1-6 carbon atoms, or aryloxy, trifluoromethyl, nitro, cyano or carboxylic acid ester groups, or wherein X and Y conjointly denote a fused benzene ring are useful for coloring plastics, lacquers and printing inks in yellow shades.

Abstract: Diazopigments of the formula ##STR1## wherein A denotes a direct bond or an aliphatic, cycloaliphatic, aromatic or heterocyclic radical, B denotes an aromatic radical, R.sub.1 denotes a H atom, an alkyl group which contains 1-4 C atoms and which is optionally substituted by a phenyl radical, or an aryl radical, R.sub.2 denotes a H atom, an alkyl group containing 1-4 C atoms, a cyano or carbamoyl group, an alkoxycarbonyl or alkylcarbamoyl group containing 2-6 C atoms, or a phenyl, benzoyl or phenylcarbamoyl group which is optionally substituted in the phenyl radical by halogen atoms or alkyl or alkoxy groups containing 1-4 C atoms, R.sub.

Abstract: A tri- or tetra-dentate metal complex having the formula ##STR1## wherein A is an aryl or heterocyclic residue, B is an aliphatic, aryl or heterocyclic residue, R is an alkyl, cycloalkyl, aryl, aralkyl or heterocyclic residue or R is the atoms required to complete, together with A and Y, a heterocyclic residue, Y is O, S or N--R" wherein R" is the atoms required to complete, together with A and Y, a heterocyclic residue, X is O, S, CO.sub.2 or N--R wherein R has its previous significance, and when X is CO.sub.

Abstract: A curable composition comprising a mixture of an epoxy resin and a hardener can be prepared by dissolving the resin and curing agent in a low boiling solvent and flashing off the solvent at temperatures in excess of 400.degree. F, the evaporating solvent cooling the composition and minimizing precure of the resin.Reinforced composites can be prepared by passing a supporting material such as a continuous web strand or roving through the resin solution and thereafter heating at temperatures above 400.degree. F to remove the solvent without appreciably precuring the resin.The curable epoxy compositions can be used for molding, laminating and the like.

Abstract: This invention provides compositions containing polysulfonamides which are prepared by the addition polymerization of poly-N-cyanosulfonamides. The resins are useful in coating, molding, laminating and casting applications.

Abstract: Epoxide resins, which polymerize on exposure to actinic radiation, have, per average molecule, at least two photopolymerizable groups and also at least two 1,2-epoxide groups, one or more such epoxide groups being contained in units of formula ##STR1## Photopolymerizable epoxide resins are commonly prepared by introduction of photopolymerizable groups into a molecule of an epoxide resin by reaction with some of the epoxide groups: the modified resin, having a low epoxide group content, usually exhibits poorer adhesion and lower glass transition temperature than would otherwise be the case. In the new resins, secondary hydroxyl groups generated on introduction of the photopolymerizable groups have been converted into glycidyl ether groups, thus they have a higher epoxide content.

Abstract: Hydantoin diglycidyl compounds of the formula ##STR1## wherein R.sub.1 is hydrogen, alkyl containing 1 to 8 carbon atoms or cycloalkyl containing 5 to 6 carbon atoms; and R.sub.2 is alkyl containing 5 to 8 carbon atoms or cycloalkyl containing 5 to 6 carbon atoms, are prepared. The diglycidyl compounds are liquid at room temperature, easily processable as casting and laminating resins and when cured possess excellent resistance to water.