Abstract: It is disclosed a security element comprising a substantially flat substrate including first and second areas, wherein the first area displays a first motif and generates a first color movement effect to be seen in the first motif while the substrate gets tilted over a first angular tilting range, the second area displays a second motif and generates a second color effect to be seen in the second motif and within a second angular tilting range, the first and second angular tilting ranges are different, and the first area comprises either a micro-mirror structure or a print of magnetically oriented pigments and the second area comprises the other one of the micro-mirror structure and the print of magnetically oriented pigments.

Abstract: The present invention relates to the field of magnetic assemblies and processes for producing optical effect layers (OEL) comprising magnetically oriented non-spherical magnetic or magnetizable pigment particles on a substrate. In particular, the present invention relates magnetic assemblies and processes for producing said OELs as anti-counterfeit means on security documents or security articles or for decorative purposes.

Abstract: This invention relates to electroluminescent metal complexes with benzotriazoles of the formula (I), a process for their preparation, electronic devices comprising the metal complexes and their use in electronic devices, especially organic light emitting diodes (OLEDs), as oxygen sensitive indicators, as phosphorescent indicators in bioassays, and as catalysts.

Abstract: The present invention provides organometallic latent catalyst compounds, which are suitable as catalysts in polyaddition or polycondensation reactions which are catalysed by a Lewis acid type catalyst, in particular for the crosslinking of a blocked or unblocked isocyanate or isothiocyanate component with a polyol or polythiolto form a polyurethane (PU).

Abstract: Base-polymerizable or base-crosslinkable compositions comprising select bicyclic amines with benzylic substitution undergo photochemically induced, base-catalysed reactions upon photochemical conversion of the benzylically substituted amine to an amidine derivative.

Abstract: The present invention provides organometallic latent catalyst compounds, which are suitable as catalysts in polyaddition or polycondensation reactions which are catalysed by a Lewis acid type catalyst, in particular for the crosslinking of a blocked or unblocked isocyanate or isothiocyanate component with a polyol or polythiolto form a polyurethane (PU).

Abstract: The invention accordingly relates to an optical recording medium comprising a substrate, a reflecting layer and a recording layer, wherein the recording layer comprises a compound of formula (I) or a mesomeric or a tautomeric form thereof, wherein M1 is a metal cation in the oxidation state +3, a hydroxy or halogeno metal group wherein the metal is in the oxidation state +4, or an oxo metal group wherein the metal is in the oxidation state +5; (III) and (IV)are each independently of the other (V), (VI) or (VII); (VIII) is (IX), (X), (XI), (XII), (XIII), or (XIV); (XV) is (XVI) or C2-C8heteroaryl unsubstituted or mono- or poly-substituted by R10, R11, R12 and/or R13; Q1 is N or CR18, Q2 is N or CR19, Q3, Q5 and Q7 are each independently of the other CR20R21, O, S or NR22, Q4 is CR16 or N and Q6 is CR17 or N; and R2 and/or R6 are O, S or NR33. Please see the disclosure for the other substituents which are less relevant.

Abstract: This invention relates to electroluminescent metal complexes with benzotriazoles of the formula (I), a process for their preparation, electronic devices comprising the metal complexes and their use in electronic devices, especially organic light emitting diodes (OLEDs), as oxygen sensitive indicators, as phosphorescent indicators in bioassays, and as catalysts.

Abstract: Compounds of the formula I R7?N—R6 RS—C,N—R4 H C, R?/I R, 3 R 2 (I) in which R, is an aromatic or heteroaromatic radical which is capable of absorbing light in the wave-length range from 200 nm to 650 nm and which is unsubstituted or substituted one or more times by C,—C,8alkyl, C2-C,ealkenyl, C2-C,8alkynyl, C,—C,ehaloalkyl, NO2, NR,OR, CN, OR,2, SR,2, C(O)R,3, C(O)OR,4, halogen or a radical of the formula II R˜—N? R6 1 R5-C,N.

Abstract: Base-polymerizable or base-crosslinkable compositions comprising select bicyclic amines with benzylic substitution undergo photochemically induced, base-catalysed reactions upon photochemical conversion of the benzylically substituted amine to an amidine derivative.

Abstract: The invention relates to an optical recording medium comprising a substrate, a reflecting layer and a recording layer, wherein the recording layer comprises a compound of formula preferably a compound of formula or a mesomeric or tautomeric form thereof, wherein Ah+ is an organic cation having h quaternary ammonium or phosphonium groups; Q1 is N or CR15, Q2 is N or CR16, Q3, Q5 and Q7 are each independently of the other CR17R18, O, S or NR19, Q4 is CR13 or N and Q6 is CR14 or N; and one of R1 and R3 is OR17, OR20, SR17, SR20, NR17R18, NR18R20 or NR20R21, and the other of R1 and R3 is O?, S? or N?R22. The compounds of formula (I) and (II) are novel and also claimed, as well as mixtures thereof with metal complexes. The optical recording media are remarkably suitable for DVD±R (658 nm), especially at high recording speeds.

Abstract: A process for producing stable, scratch-resistant coatings comprising the preparation of a photocurable formulation containing certain siloxane photoinitiators as surface-active initiators, application of the formulation to a substrate and the curing of the formulation by exposure to electromagnetic radiation with wavelengths from 200 nm into the IR region and prior, simultaneous or subsequent exposure to heat.

Abstract: Polymeric photoinitiators of the formula I or II wherein n and m independently of one another are 3-5; o is 10-16; p is 4-8; R is phenyl-CO—CO—O—; Y and Y? independently of one another are C1-C10alkylene or —[(CH2)a—O—(CH2)b]c— wherein a is 2-10, b is 0-10, c is 1-3; with the proviso that they are, however, at least 1 if the methylene group in question is between two oxygen atoms.

Abstract: Compounds of the formula I are suitable photoinitiators which accumulates at the surface of the formulation in which R is for example phenyl and A is a surface-active radical of the formula III Y is a divalent group C3–C12cycloalkylene, C6–C12bicycloalkylene; C1–C6alkylenen-C3–C12cycloalkylene, C1–C6alkylene- C6–C12bicycloalkylene or C1–C10alkylene interrupted by one or more non-consecutive C3–C12cycloalkylene, —U—C3–C12cycloalkylene, C6–C12bicycloalkylene or —U—C6–C12bicycloalkylene; C1–C10alkylene interrupted by one or more non-consecutive O and C3–C12cycloalkylene, —U—C3–C12cycloalkylene, C6–C12bicycloalkylene and/or —U—C6–C12bicycloalkylene; U is U? or U? U? is —(CH2)aCOO—; U? is —Si(CH3)(CH3)— or —(CH2)a—Si(CH3)(CH3)—, a is a number from 1 to 10; b is a number from 0 to 10; with the proviso that they are, however, at least 1 if the methylene group in question is between two oxygen atoms.

Abstract: The invention relates to a process for preparing organosilicon group containing photoinitiators of the formula (I), wherein m is a number from 1 to 200; q is 0 or 1; A is IN-C(O)—O—CHR3—Y— or IN-C(O)—NH—CHR3—Y—; A? is A or R1?; R1 and R1?, R2 and R2? are C1–C18alkyl or phenyl, or —(O)q—SiR1R1?R2; R3 is hydrogen or C1–C6alkyl, Y is a divalent group selected from C1–C10alkeylene, C2–C10alkenylene or —(CH2)b—O—(CH2)a—; and b are each independently of the other a number of 1 to 6; IN is a photolabile functional moiety of the formula (II) or (III), wherein R4 is hydrogen or —C(O)—C(O)—OH or —C(O)—C(O)—OC1–C6alkyl and n is 1–3; R5 and R6 are C1–C12alkyl or together are cycloC5–C7alkyl; R7 is hydroxy, C1–C6alkoxy or morpholinyl; X is —(CH2)a—, —(CH2)b—O—(CH2)a— or —(CH2)b—O—CO—(CH2)a—; a and b are each independently of the other a number of 1 to 6; whereby the process is characterized in that a photolabile functional moiety containing a carboxy group (IN-COOH) or an alkoxycarbonyl group (IN-CO—OC1–C6alkyl) is reacte

Abstract: A process for the production of coatings with scratch-resistant durable surfaces that comprise as photoinitiator (B) in a photocurable formulation at least one surface-active photoinitiator, concentrated at the surface of the formulation, of formula (Ia) or (Ib), wherein Ra is a radical of formula (IIa), Rb is a radical of formula (IIb)), or Ra and Rb are naphthyl, anthracyl, phenanthryl or a heterocyclic radical each of which is unsubstituted or substituted; R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10 are, for example, each independently of the others hydrogen; A-Y; C1–C12alkyl, halogen or phenyl; R11 and R12 are, for example, C1–C12 alkyl; X is —OR20 or —N(R21)(R22); R20 is, for example, hydrogen or C1–C4alkyl; R21 and R22 are, for example, hydrogen or C1–C12 alkyl; X1 is, for example, —O—; Y is, for example, a single bond or —O—; Y1 is, for example, a single bond; and A is, for example, C6–C30alkyl.

Abstract: A process for the production of coatings having scratch-resistant durable surfaces, in which there is used a photocurable formulation comprising a surface-active photoinitiator, concentrated at the surface of the formulation, of formula (Ia) or (Ib), wherein R and R3 are, for example, a radical of formula (II); R1 is, for example, hydrogen, A1-X1- or a radical of formula (II); R2 is, for example, unsubstituted or substituted C1-C12alkyl or A2-X2-; R4 is, for example, hydrogen or A4-X4-; R5 is, for example, hydrogen or A5-X5- or is a radical of formula (II); R6, R7, R8, R9 and R10 are each independently of the others, for example, hydrogen, A-X- , A3-X3- or C1-C12alkyl; A, A1, A2, A3, A4 and A5 are each independently of the others, for example, a surface-active radical of formula (III); n is a number from 1 to 1000, m is a number from 0 to 100; p is a number from 0 to 10 000; R18, R19, R20, R21, G1 and G2 are, for example, C1-C18alkyl; and X, X1, X2, X3, X4 and X5 are, for example, a single bond.

Abstract: The invention provides photopolymerizable compositions comprising (A) at least one ethylenically unsaturated photopolymerizable fluocarbon compound selected from polyfluoroalkyl monoacrylates, polyfluoroalkyl monomethacrylatesor polyfluoroalkyldiacrylates and (B) at least one photoinitiator of the formula (I) R is a radical of the formula (II) s is a number of 1 to 4, r is a number of 1 to 2; Y is a single bond or is a divalent linker group A if s is 1, is a radical A0, where A0 is C1-C3oalkyl, C1-C30alkenyl, C1-C30alkynyl or C1-C30aralkyl the radicals being substituted by at least two fluorine atoms and optionally further substituted by OH—, C1-C4alkoxy-, phenyl-, naphthyl-, halogen-, CN—, SR7—, NR8R9— and/or —O(CO)R10—; and the radical A0 is uninterrupted or interrupted by one or more —O—, —S— or —NR12—; A if s is >1, is a radical A1; where A1 is C1-C30alkylene, C1-C3oalkenylene, C1-C3oalkynylene or C1-C30aralkylene, the radicals being substituted by at least two fluorine atoms and optionally further sub

Abstract: Compounds of formula Ia, Ib and Ic, (Ic), in which R, R1 and R2 are e.g. phenyl, naphthyl, anthracyl, phenanthryl or a heterocyclic radical, are suitable as photoinitiators which accumulate at the surface of coatings.

Abstract: The invention relates to a process for preparing organosilicon group containing photoinitiators of the formula (I), wherein m is a number from 1 to 200; q is 0 or 1; A is IN—C(O)—O—CHR3—Y— or IN—C(O)—NH—CHR3—Y—; A? is A or R1?; R1 and R1?, R2 and R2? are C1-C18alkyl or phenyl, or —(O)q—SiR1R1?R2; R3 is hydrogen or C1-C6alkyl, Y is a divalent group selected from C1-C10alkeylene, C2-C10alkenylene or —(CH2)b—O—(CH2)a—; and b are each independently of the other a number of 1 to 6; IN is a photolabile functional moiety of the formula (II) or (III), wherein R4 is hydrogen or —C(O)—C(O)—OH or —C(O)—C(O)—OC1-C6alkyl and n is 1-3; R5 and R6 are C1-C1-2alkyl or together are cycloC5-C7alkyl; R7 is hydroxy, C1-C6alkoxy or morpholinyl; X is —(CH2)a—, —(CH2)b—O—(CH2)a— or —(CH2)b—O—CO—(CH2)a—; a and b are each independently of the other a number of 1 to 6; whereby the process is characterized in that a photolabile functional moiety containing a carboxy group (IN—COOH) or an alkoxycarbonyl group (IN—CO—OC1-C6alkyl) is react