Abstract: The invention relates to the use of a hybrid material comprising a) an organopolysilazane material and b) at least one surface-modified nanoscale inorganic oxide as coating material for producing transparent layers having a thickness of less than 500 ?m in optoelectronic components.

Abstract: The present invention relates to a color conversion sheet (100) and an optical device comprising a color conversion sheet (100). The present invention further relates to a use of the color conversion sheet (100) in an optical device (200). The invention further more relates to method for preparing the color conversion sheet (100) and method for preparing the optical device (200).

Abstract: The present invention relates to a method for producing silazane-siloxa copolymers and the use of such copolymers, particularly in LEDs.

Abstract: A hybrid material for light emitting diodes, comprising a) an organopolysilazane material, comprising repeating units of formulae (I) and (II) [—SiR1R2—NR3—]x??(I) [—SiHR4—NR5—]y??(II) wherein the symbols and indices have the following meanings: R1 is C2-C6-alkenyl or C4-C6-alkadienyl; R2 is H or an organic group; R3 is H or an organic group; R4 is H or an organic group; R5 is H or an organic group; x is 0.001 to 0.2; and y is 2x to (1?x), with the proviso that x+y?1 and that y can be 0 if R2 is H, and b) inorganic nanoparticles having a mean diameter in the range of from 1 to 30 nm, which are surface modified with a capping agent comprising a C1-C18-alkyl and/or C1-C18-alkenyl group, is useful as encapsulation material for LEDs.

Abstract: The invention relates to the use of a hybrid material comprising a) an organopolysilazane material and b) at least one surface-modified nanoscale inorganic oxide as coating material for producing transparent layers having a thickness of less than 500 ?m in optoelectronic components.

Abstract: A hybrid material for light emitting diodes, comprising a) an organopolysilazane material, comprising repeating units of formulae (I) and (II) [—SiR1R2—NR3—]x??(I) [—SiHR4—NR5—]y??(II) wherein the symbols and indices have the following meanings: R1 is C2-C6-alkenyl or C4-C6-alkadienyl; R2 is H or an organic group; R3 is H or an organic group; R4 is H or an organic group; R5 is H or an organic group; x is 0.001 to 0.2; and y is 2x to (1?x), with the proviso that x+y?1 and that y can be 0 if R2 is H, and b) inorganic nanoparticles having a mean diameter in the range of from 1 to 30 nm, which are surface modified with a capping agent comprising a C1-C18-alkyl and/or C1-C18-alkenyl group, is useful as encapsulation material for LEDs.

Abstract: A compound of the formula (I) where the symbols and indices are each defined as follows: A is A?, R or O—R; where R is a straight-chain, branched or cyclic, saturated or unsaturated aliphatic radical having 1-8 carbon atoms; A? is the same or different and is B is a bond, —O—C(O)—, —C(O)—O—, —O—C(O)—, —C(O)—NH—, —NH—C(O)—, —C(O)—O—CH2—CH(OH)—CH2—O, —O—CH2—CH(OH)—CH2—O—(O)C—, —O—C(O)—O—, —O—C(O)—NH— or —NH—C(O)—O—; R1 is H or OH; m is 1, 2, 3, 4 or 5; Y is n is a positive rational number ?3; E is the same or different and is —CH—CHR2—, —CHR2—CH2—, —CH2—CHR2—O—, —O—CHR2—CH2—, —(CH2)r—O— or —O—(CH2)—; R2 is H or CH3 and r is 1 or 4, is suitable as a light-sensitive component for photoresists.

Abstract: A compound of the formula (I) where the symbols and indices are each defined as follows: A is A?, R or O—R; where R is a straight-chain, branched or cyclic, saturated or unsaturated aliphatic radical having 1-8 carbon atoms; A? is the same or different and is B is a bond, —O—C(O)—, —C(O)—O—, —O—C(O)—, —C(O)—NH—, —NH—C(O)—, —C(O)—O—CH2—CH(OH)—CH2—O, —O—CH2—CH(OH)—CH2—O—(O)C—, —O—C(O)—O—, —O—C(O)—NH— or —NH—C(O)—O—; R1 is H or OH; m is 1, 2, 3, 4 or 5; Y is n is a positive rational number ?3; E is the same or different and is —CH—CHR2—, —CHR2—CH2—, —CH2—CHR2—O—, —O—CHR2—CH2—, —(CH2)r—O— or —O—(CH2)—; R2 is H or CH3 and r is 1 or 4, is suitable as a light-sensitive component for photoresists.

Abstract: The invention relates to a process for the preparation of a photosensitive photoresist solution, characterized in that a novolak resin and a diazonaphthoquinonesulphonyl chloride are dissolved in a solvent from the group consisting of the photoresist solvents, a proportion of from 1 to 70 mol % of the phenolic hydroxyl groups of the novolak resin is reacted with diazonaphthoquinonesulphonyl chloride in the presence of a base, and the reaction mixture is washed with water and optionally diluted with further photoresist solvent.

Abstract: Lubricants intended for solid surfaces, and particularly for skis, and comprising a partially fluorinated compound of formula 1 RF—(A)a—(O)b—(B)c—(D)d—(RF)e??(1) where RF is a perfluorinated radical of formula F(CF2)n-, n is a number from 1 to 20, A is C1-C30, preferably C1-C18, alkylene. B is arylene having 6 to 14 carbon atoms or is a saturated or unsaturated monocyclic or polycyclic hydrocarbon having 3 to 30, preferably 3 to 18 carbon atoms, D is hydrogen or C1-C30, preferably C1-C18, alkyl, a is zero or 1, b, c, and d are zero, 1 or 2 and e is zero or 1, with the proviso that b and c are not simultaneously zero.

Abstract: Process for the preparation of perfluorocarboxylic acids of the formula RF—COOH, salts thereof and esters thereof from perfluoroalkyl iodides of the formula RF′—I, in which RF and RF′ are cyclic, branched or linear, saturated or unsaturated perfluoroalkyl radicals, by activating the perfluoroalkyl iodides in the presence of oxygen and in organic solvents.