Abstract: Liquid highly active photoinitiators are obtained by dissolving a solid photoinitiator of the titanocene type in liquid photoinitiators of the acetal or ketal type. The liquid mixtures have a long dark storage stability.

Abstract: Light-stabilized polymer microparticles, which contain at least one light stabilizer, and processes for the preparation of these microparticles by polymerization of suitable monomers, at least a part of the polymerization being carried out in the presence of at least one light stabilizer, are described. The polymer microparticles can be used in coating compositions which comprise a disperse phase containing these particles and a liquid continuous phase.Coatings and finishes based on the compositions according to the invention are distinguished by improved weathering resistance, in particular by a high light stability.

Abstract: A carrier film is coated on one side with a radiation curable paint and on the other with an adhesive. The paint is partially cured by irradiation, the carrier film is heated and, in the thermoplastic state, applied by deep drawing to a three-dimensional substrate. In a final step the paint is completely cured by heat.

Abstract: o-Hydroxyphenyl-s-triazines of formula I ##STR1## wherein n is 1 or 2 and R.sub.1 to R.sub.7 are as defined in claim 7, are good light stabilizers for coating compositions which contain a basic curing catalyst. In contradistinction to other UV absorbers, they do not cause discolorations in the presence of such catalysts.

Abstract: A compound of formula ##STR1## wherein R.sub.0, R.sub.1, R.sub.2, R.sub.3, R.sub.6 and X are as defined in claim 1, are suitable for use as UV absorbers for protecting light-sensitive organic materials.

Abstract: Compounds of the formula ##STR1## wherein R.sub.o, is hydrogen or alkylene-COOR where R is alkyl or hydroxyalkyl, R.sub.1 is hydrogen, alkyl, hydroxyalkyl, alkenyl or acyl, R.sub.2 and R.sub.3 are independently hydrogen, alkyl, alkenyl or alkoxy, R.sub.6 is hydrogen or alkyl, and X is --CH.sub.2 --, --NH--, --S-- or --O--, are suitable as UV absorbers for use in photosensitive organic materials in combination with a sterically hindered amine or hydroxyphenylbenzotriazole derivative.

Abstract: Liquid highly active photoinitiators are obtained by dissolving a solid photoinitiator of the titanocene type in liquid photoinitiators of the acetal or ketal type. The liquid mixtures have a long dark storage stability.

Abstract: Light-stabilized polymer microparticles, which contain at least one light stabilizer, and processes for the preparation of these microparticles by polymerization of suitable monomers, at least a part of the polymerization being carried out in the presence of at least one light stabilizer, are described. The polymer microparticles can be used in coating compositions which comprise a disperse phase containing these particles and a liquid continuous phase.Coatings and finishes based on the compositions according to the invention are distinguished by improved weathering resistance, in particular by a high light stability.

Abstract: The photopolymerizable composition described containsA) at least one ethylenically unsaturated photopolymerizable compound,B) a photoinitiator of the formula I ##STR1## and C) a photosensitizer from the group of aromatic carbonyl compounds having a triplet energy of 225-310 kJ/mol, for example xanthones, thioxanthones, coumarins, phthalimides, phenones and the like.Ar is phenyl substituted in the 4-position by a substituted amino group, R.sup.1 and R.sup.2 are alkyl, R.sup.3 and R.sup.4 are alkyl or alkoxyalkyl, or R.sup.3 and R.sup.4 together are 3-oxapentamethylene. Said sensitizers C) raise the activity of said photoinitiators (B) without shortening the shelf life of the mixtures. The photocurable mixtures are used especially as binders for printing inks or paints.

Abstract: Compounds of the formula ##STR1## in which a is 1, 2, or 3, R.sup.1 is an uncharged, carbocyclic or heterocyclic aromatic ring, unsubstituted or substituted, R.sup.2 is an unsubstituted or substituted cyclopentadienyl or indenyl anion, and .vertline.X.vertline..sup.a- is an a-valent anion, are suitable for use as latent curing catalysts for two-component polyurethane coatings which are activated by irradiation with actinic light or by heating.

Abstract: The photopolymerizable mixture described contains(A) at least one ethylenically unsaturated photopolymerisable compound,(B) a photoinitiator of the formula I ##STR1## and (C) a photosensitiser from the group of aromatic carbonyl compounds having a triplet energy of 225-310 kJ/mol, for example xanthones, thioxianthones, coumarins, phthalimides, phenones and the like.Ar is phenyl substituted in the 4-position by a substituted amino group, R.sup.1 and R.sup.2 are alkyl, R.sup.3 and R.sup.4 are alkyl or alkoxyalkyl, or R.sup.3 and R.sup.4 together are 3-oxapentamethylene. Said sensitisers (C) raise the activity of said photoinitiators (B) without shortening the shelf life of the mixtures. The photocurable mixtures are used especially as binders for printing inks or paints.

Abstract: Sterically hindered cyclic amines which are substituted by a photoactivatable acyl group at the basic nitrogen atom can be deacylated by irradiation with UV light. This is advantageous if the basicity of the amines proves troublesome during application. Examples of such photoactivatable acyl groups are phenylglyoxyl, phenylacetyl or naphthylacetyl groups.

Abstract: Coatings of polyisocyanates, which contain a latent catalyst of the formula I[(R.sup.1) Fe.sup.II (R.sup.2)].sub.a.sup.+ [X].sup.a- Iin which a is 1, 2 or 3, R.sup.1 is an uncharged carbocyclic or heterocyclic, unsubstituted or substituted aromatic ring, R.sup.2 is an unsubstituted or substituted cyclopentadienyl or indenyl anion and [X].sup.a- is an anion from the series comprising F.sup.-, Cl.sup.-, Br.sup.-, I.sup.-, CN.sup.-, NCO.sup.-, NCS.sup.-, CH.sub.3 COO.sup.-, CF.sub.3 COO.sup.-, SO.sub.4.sup.2-, PO.sub.4.sup.3-, NO.sub.3.sup.-, ClO.sub.4.sup.-, [(phenyl).sub.4 B].sup.-, C.sub.6 H.sub.5 SO.sub.3.sup.-, CH.sub.3 C.sub.6 H.sub.4 SO.sub.3.sup.-, CF.sub.3 C.sub.6 H.sub.4 SO.sub.3.sup.-, CH.sub.3 SO.sub.3.sup.-, CF.sub.3 SO.sub.3.sup.-, C.sub.4 F.sub.9 SO.sub.3.sup.-, C.sub.6 F.sub.13 SO.sub.3.sup.-, C.sub.8 F.sub.17 SO.sub.3.sup.-, C.sub.6 F.sub.5 SO.sub.3.sup.-, BF.sub.4.sup. -, AlF.sub.4.sup.-, AlCl.sub.4.sup.-, TiF.sub.6.sup.2-, PF.sub.6.sup.-, SbF.sub.6.sup.-, SbCl.sub.6.sup.-, GeF.sub.6.sup.

Abstract: Sterically hindered cyclic amines which are substituted by a photoactivatable acyl group at the basic nitrogen atom can be deacylated by irradiation with UV light. This is advantageous if the basicity of the amines proves troublesome during application. Examples of such photoactivatable acyl groups are phenylglyoxyl, phenylacetyl or naphthylacetyl groups.

Abstract: Oxime sulfonates of formula I ##STR1## wherein Y is a polymerizable unsaturated group or epoxide group or an --OH, --NHR.sup.5, --COOH, COOR.sup.6, --COCl, --CH.sub.2 Hal, --SO.sub.2 Cl or --NCO group, Z is an (x+y)-valent connecting member, R.sup.1 and R.sup.2 are monovalent organic radicals, m is 0 or 1, x is 1 or 2 and y is 1 or 2, can be converted into polymers which can be thermally or photochemically dissociated to form free sulfonic acid groups. Said polymers can therefore be used as photoresists which can be developed with aqueous alkalis.

Abstract: Compounds of formula I or II ##STR1## in which n is 1 or 2, R.sup.1 is phenyl, substituted phenyl, alkyl, substituted alkyl, hydrogen, --OH or amino, R.sup.2 is hydrogen, R.sup.3 is hydrogen, alkyl, substituted alkyl, phenyl or substituted phenyl, R.sup.4 is alkyl, phenyl, substituted phenyl, alkylene or arylene, X is --O--, --S--, --CH.sub.2 -- and Y is a direct bond or --CH.sub.2 -- are latent hardening catalysts for acid curable resins. The catalysts are activated by heat and are used in heat-hardening high-solids industrial varnishes and for coil-coatings, can and wood varnishes.

Abstract: A corrosion-inhibiting coating composition containing(a) a film-former and(b) as the corrosion inhibitor, an effective amount of an aliphatic or cycloaliphatic mono-, di-, tri- or tetra- carboxylic acid which is substituted in its aliphatic or cycloaliphatic radical by at least one group of the formula I ##STR1## in which X is oxygen, sulfur or NH and each R independently of the others is hydrogen, alkyl, halogenoalkyl, alkoxy, alkylthio, alkylsulfonyl, cycloalkyl, phenyl, alkylphenyl, phenylalkyl, halogen, --CN, --NO.sub.2, --COOH, --COOalkyl, --OH or a primary, secondary or tertiary amino or carbamoyl group, R not being --NH.sub.2 in the case of a monocarboxylic acid in which X is sulfur, and also base addition salts of these compounds are useful as corrosion inhibitors.

Abstract: There are obtained by mixing together approximately equal parts of 1-benzoylcyclohexanol and benzophenone or a benzophenone derivative liquid mixtures which possess a high activity as photoinitiators for the polymerization of ethylenically unsaturated compounds. The level of activity is higher than that of the individual components taken separately.

Abstract: Compounds of the formula I, II or III ##STR1## in which Ar is a sulfur-containing aromatic radical, R.sup.1 and R.sup.2 are a monovalent hydrocarbon radical which is substituted or unsubstituted or R.sup.1 and R.sup.2 together form alkylene, oxaalkylene or azaalkylene, R.sup.3 is a direct bond or a divalent hydrocarbon radical, X is a monovalent amino group and X' is a divalent amino or diamino group, are excellent photoinitiators for the photocuring of colored, in particular pigmented, compositions containing an olefinically unsaturated, photopolymerizable binder.

Abstract: Sterically hindered cyclic amines which are substituted by a photoactivatable acyl group at the basic nitrogen atom can be deacylated by irradiation with UV light. This is advantageous if the basicity of the amines proves troublesome during application. Examples of such photoactivatable acyl groups are phenylglyoxyl, phenylacetyl or naphthylacetyl groups.