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Molecularly printed sol-gel type polymers and their use as an anti-dandruff agent
专利权人:
L'OREAL;LOREAL
发明人:
GREAVES, Andrew,RIBAUD, Christèle,MANFRE, Franco,HAUPT, Karsten,TSE SUM BUI, Jeanne Bernadette
申请号:
ES13821474
公开号:
ES2602286T3
申请日:
2013.12.20
申请国别(地区):
ES
年份:
2017
代理人:
摘要:
A process for the preparation of a molecularly printed polymer, comprising a first stage of polymerization of a mixture comprising: i) one or more silanes; ii) one or more crosslinking agents chosen from tetraalkyl orthosilicates (C1-C4); and iii) water; iv) one or more porogenic solvents; v) one or more C14-C20 fatty acids; followed by a second stage of removal of the C14-C20 fatty acid present in the polymer obtained at the conclusion of the first stage, the silane corresponding to the following formula (I): R1Si (OR2) z (R3) x (I) in the that: - R1 is a saturated or unsaturated C1-C6 hydrocarbon chain, linear or branched, and cyclic or acyclic, substituted with a group selected from: - an NH2 or NHR amine group, with R>; = C1-C4 alkyl , - an aryl or aryloxy group substituted with an amino group or with a C1-C4 aminoalkyl group, it being possible that R1 is interrupted in its chain by a heteroatom (O, S, NH) or a carbonyl group (CO), being R1 linked to the silicon atom directly via a carbon atom, - R2 and R3, which are identical or different, represent a linear or branched alkyl group comprising 1 to 6 carbon atoms, - z represents an integer that ranges from 1 to 3, y - x represents an integer that ranges from 0 to 2, with z + x>; = 3.Un procedimiento para la preparación de un polímero molecularmente impreso, que comprende una primera etapa de polimerización de una mezcla que comprende: i) uno o más silanos; ii) uno o más agentes de reticulación escogidos de ortosilicatos de tetraalquilo (C1-C4); y iii) agua; iv) uno o más disolventes porógenos; v) uno o más ácidos grasos de C14-C20; seguido de una segunda etapa de retirada del ácido graso de C14-C20 presente en el polímero obtenido al concluir la primera etapa, correspondiendo el silano a la siguiente fórmula (I): R1Si(OR2)z(R3)x (I) en la que: - R1 es una cadena de hidrocarburo de C1-C6 saturada o insaturada, lineal o ramificada, y cíclica o acíclica, sustituida con un grupo escogido de: - un grupo amina NH2
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