Abstract:
The instant invention refers to the use of a concentrated aqueous polymer dispersion with an average particle size of less than 1000 nm comprising (a) a polymer carrier prepared by heterophase radical polymerization of at least one ethylenically unsaturated monomer in the presence of (b) an oil-soluble organic UV absorber selected from the class of p-aminobenzoic acid derivatives; salicylic acid derivatives; benzophenone derivatives; diphenyl acrylate derivatives; benzofuran derivatives; polymeric UV absorbers, comprising one or more organosilicon radicals; cinnamic acid derivatives; camphor derivatives; s-triazine derivatives; trianilino-s-triazine derivatives; menthyl anthranilates; and benzotriazole derivatives; wherein the weight ratio of the oil-soluble organic UV absorber (b) to polymer carrier (a) is greater than 50 parts UV absorber per 100 parts of carrier; for the protection of human and animal hair and skin against the damaging effect of UV radiation. The concentrated aqueous polymer dispersions show unexpectedly high sunscreen effects and a positive skin feeling.
Abstract:
Compuesto de la fórmula en forma micronizada que tiene un tamaño de partícula de 0.02 a 2 micrómetros, en donde R1 y R2 independientemente uno del otro son un alquilo C1-C20; alquenilo C2-C20; cicloalquilo C3-C10; cicloalquenilo C3-C10; o R1 y R2 juntos con el átomo de nitrógeno que los une forman, un anillo heterocíclico de 5- o 6- miembros; n1 es 1 o 2; cuando n1 = 1, R3 es un radical heterocíclico saturado o insaturado; cuando n1 es 2, R3 es un radical alquileno-, cicloalquileno, alquenileno o fenileno, el cual es opcionalmente sustituido por un grupo carbonilo o carboxi; un radical de la fórmula *-CH2-C≡C-CH2-* o R3 junto con A forman un radical bivalente de la fórmula (1a) en donde n2 es un número de 1 a 3. A es -O-; o -N(R5)-; y R5 es hidrógeno; alquilo C1-C5; o hidroxi-alquilo C1-C5.
Abstract:
Described are amino substituted hydroxyphenyl benzophenone derivatives of formula (I), wherein R 1 , and R 2 independently from each other are; C 1 -C 20 alkyl; C 2 -C 20 -alkenyl; C 3 -C 10 cycloalkyl; C 3 -C 10 cycloalkenyl; or R 1 , and R 2 together with the linking nitrogen atom form a 5- or 6-membered heterocyclic ring; n 1 is a number from 1 to 4; when n 1 =1, R 3 is a saturated or unsaturated heterocyclic radical; hydroxy-C 1 -C 5 alkyl; cyclohexyl optionally substituted with one or more C 1 -C 5 alkyl; phenyl optionally substituted with a heterocyclic radical, aminocarbonyl or C 1 -C 5 alkylcarboxy; when n 1 is 2, R 3 is an alkylene-, cycloalkylene- or alkenylene radical which is optionally substituted by a carbonyl- or carboxy group; o R 3 together with A forms a bivalent radical of the formula (Ia), wherein n 2 is a number from 1 to 3; when n 1 is 3, R 3 is an alkanetriyl radical; when n 1 is 4, R 3 is an alkanetetrayl radical; A is -O-; or -N(R 5 )-; and R 5 is hydrogen; C 1 -C 5 alkyl; or hydroxy-C 1 -C 5 alkyl. The compounds are useful as UV filters in sunscreen applications.
Abstract:
Uso de los compuestos de fórmula **Fórmula** en donde R1 y R5 independientemente entre sí son hidrógeno; R6, R7 y Re independientemente entre sí son hidrógeno; hidroxilo; halógeno; alquilo C1 - C18; alcoxi C1 - C168; arilo C6- C12; bifenilo; ariloxi C6 - C12; alquiltio C1 - C16; carboxilo; -COOM; alquilcarboxilo C1 - C18; aminocarbonilo; o mono odialquilamino C1 - C16; acilamino C1 - C10, -COOH; y M es un ion de metal alcalino; en donde el compuesto de fórmula (2) está presente en la composicion en el estado micronizado; para la protecciónde piel y cabello humano o de animal contra el efecto nocivo de la radiación UV.
Abstract:
Disclosed is the use of an aqueous dispersion comprising (a) a micronized sparingly soluble organic benzophenone derivative of formula (1), selected from the crystal modifications (B) and (C), wherein the crystal modification (B) is characterized by a peak in the X-ray diffraction pattern at a d-spacing of about 7.70; and wherein the crystal modification (C) is characterized by a peak in the X-ray diffraction pattern at a d-spacing of about 7.06; and (b) a dispersing agent selected from anionic, non-ionic and amphoteric surfactants; for protecting the human skin from browning and skin aging. The new crystal modification (C) represents a thermodynamically stable compound of formula (1) at 25° C. This modification is therefore suitable in dispersions comprising micro-fine particles.
Abstract:
Disclosed is a method of preparing a composition, comprising a micronized insoluble organic UV absorber, which method comprises grinding the insoluble organic UV absorber, in coarse particle form, in a grinding apparatus comprising yttrium-stabilized zirconium oxide grinding beads, in the presence of alkyl polyglucoside having the formula CnH2n+1O(C6H10O5)xH, in which n is an integer ranging from 8 to 16 and x is the mean polymerisation level of the glucoside moiety (C6H10O5) and ranges from 1.4 to 1.6, or an ester thereof and in the presence of an antifoam agent as dispersingagent auxiliary.
Abstract:
Uso de los derivados de merocianina de fórmula **Fórmula** en donde L1, L2 o L3 independientemente uno del otro son hidrógeno; hidroxi; alquilo C1-C22; alcoxi C1-C22; alquenilo C2-C22: alquinilo C2-C22; cicloalquilo C3-C12; cicloalquenilo C3-C12; aralquilo C7-C20; heteroalquilo C1-C20; ciclo heteroalquilo C3-C12, heteroaralquilo C4-C20; arilo C6-C18; R4 es CN; -COR5; -COOR6; -CONR5R6; alquenilo C2-C22; alquinilo C2-C22; cicloalquenilo C3-C12; arilo C8-C18; heteroarilo C3- C12; heteroalquilo C2- C12; o heterocicloalquilo C3-C5.
Abstract:
Use of benzotriazole derivatives of formula (1), wherein R1 is C1-C30alkyl; C1C5alkoxy; C1-C5alkoxycarbonyl; C5-C7cycloalkyl; C6-C10aryl; aralkyl; —SO3M; a radical of formula (1a) R3 is hydrogen; C1C5alkyl; C1C5alkoxy; halogen, preferably Cl; or hydroxy; R4 and R5 are each independently of the other hydrogen; or d-C5alkyl; m is 1 or 2; n is O or 1; if m=1, R2 is hydrogen; unsubstituted or phenyl-substituted d-C1-C12alkyl; or C6-C10aryl; if m=2, R2 is the direct bond; or —(CH2)p—; and p is 1 to 3; for enhancing the photostability of cosmetic or dermatologic compositions comprising at least one further organic UV absorber.
Abstract:
Use of benzotriazole derivatives of formula (1), wherein R1 is C1-C30alkyl; C1C5alkoxy; C1-C5alkoxycarbonyl; C5-C7cycloalkyl; C6-C10aryl; aralkyl; —SO3M; a radical of formula (1a) R3 is hydrogen; C1C5alkyl; C1C5alkoxy; halogen, preferably Cl; or hydroxy; R4 and R5 are each independently of the other hydrogen; or d-C5alkyl; m is 1 or 2; n is O or 1; if m=1, R2 is hydrogen; unsubstituted or phenyl-substituted d-C1-C12alkyl; or C6-C10aryl; if m=2, R2 is the direct bond; or —(CH2)p—; and p is 1 to 3; for enhancing the photostability of cosmetic or dermatologic compositions comprising at least one further organic UV absorber.