Abstract:
COMPSOITIONS WHICH CAN BE HARDENED BY ULTAVIOLET IRRADIATION AND HAVE IMPROVED DARK STORABILITY COMPRISING AN UNSATURATED POLYESTER OF AN A,B-UNSATURATED IDCARBOXYLICACID AND A POLYOL, A COPOLYMERIZABLLE MONOMERIC COMPOUND AND, AS PHOTOSENSITIZER, A BENZOIN ETHER OF A SECONDARY ALCOHOL.
Abstract:
Polycarbonates based on aromatic bis-hydroxy compounds which contain s-triazines of the formula
WHERE: Z represents a single bond, -O-, -S-, -NH- or -NR6-, where R6 denotes hydrogen, n-alkyl radicals with 1 to 30 carbon atoms or their isomers, n-alkenyl radicals with 2 to 30 carbon atoms or their isomers, cycloalkyl radicals with 5 to 12 carbon atoms, alkyl-substituted or alkenyl-substituted cycloalkyl radicals with 5 - 12 ring carbon atoms and 1 to 5 carbon atoms in the sidechain, mononuclear or polynuclear aryl or heteroaryl radicals, such as pyridine, pyprimidine or imidazole radicals, with up to 14 carbon atoms, or aralkyl radicals with a total of up to 30 carbon atoms or the aryl-carbon atom bonded halogen and/or C1-C6alkyl and/or C1-C6-alkoxy and/or nitrosubstituted derivatives of the aryl, heteroaryl or aralkyl radicals; R has the same meaning as R6, and is identical or not identical with R6, and can be linked to R6 via alkylene radicals with 2 to 5 carbon atoms which can be interrupted by hetero-atoms, such as O, S and NR7, that is R + R6 can be alkylene with 2 to 5 carbon atoms which can be interrupted by O,S and NR7, with the proviso that the rings formed by R, Z and R6 are from three- to sixmembered rings; and WHEREIN R7 is an alkyl radical with 1 to 4 carbon atoms, a phenyl radical or an alkylaryl radical with a total of up to 10 carbon atoms, OR R and R6 can be aryl linked via a single bond or O or S, as linkages between the aromatic bis-hydroxy compounds and bonded to the oxygen atoms of the latter.
Abstract:
Object of the invention is a pulverulent coating agent curing at a temperature above 130*C comprising (a) at least one polymer containg hydroxyl groups and having a softening point of at least 40*C, and (b) an with Epsilon -caprolactam masked product consisting of an aromatic polyisocyanate and a dihydric alcohol.
Abstract:
The invention relates to gamma -Hydroxy- gamma -phenyl- gamma -benzoylbutyric acids, the esters and amides thereof, which are useful photosensitisers for the photopolymerisation of polymerisable compounds or compound mixtures including mixtures of unsaturated polyesters and copolymerisable monomeric compounds.
Abstract:
Object of the invention are binders for environmentally harmless lacquer systems having only a low solvent content which are based on an oligomeric alkyl resin of a polyalcohol and an aromatic dicarboxylic acid which may be modified with an unsaturated fatty acid and optionally other monocarboxylic acids and comprise an aromatic dicarboxylic acid as a semiester.
Abstract:
THE INVENTION RELATES TO ACID-HARDENING RESIN COMPOSITIONS HAVING INCORPORATED THEREIN A BENZOPHENONE COMPOUND EACH OF THE TWO BENZENE NUCLEI OF WHICH BEING SUBSTITUTED BY A HALOGENATED METHYL GROUP. IF SAID COMPOSITIONS ARE IRRADIATED BY UV-LIGHT SAID BENZOPHENONE COMPOUND SPLITS OFF HYDROGEN HALIDE WHICH, IN TURN, CATALYSES THE HARDENING OF THE RESIN COMPOSITION.
Abstract:
The present invention relates to molding and coating masses comprising mixtures of unsaturated polyesters and copolymerizable monomers which are curable by electron radiation. According to the invention small amounts of phosphines, arsines or stibines are added to such masses, whereby the radiation dose necessary for curing the masses may be remarkably reduced.
Abstract:
THE PRESENT INVENTION RELATES TO MOULDING AND COATING COMPOSITIONS HARDENING BY UNTRA-VIOLET IRRADIATION AND OBTAINED FROM MIXTURES OF UNSATURATED POLYESTERS AND COPOLYMERISABLE MONOMERIC COMPOUNDS WITH A CONTENT OF BENZOIN ARYL ETHERS AS PHOTOSENSITIZERS.