EP 3458026 A1 20190327 - LIGNIN-COATED METAL OXIDE NANOPARTICLES AND USE THEREOF IN COSMETIC COMPOSITIONS
Title (en)
LIGNIN-COATED METAL OXIDE NANOPARTICLES AND USE THEREOF IN COSMETIC COMPOSITIONS
Title (de)
LIGNINBESCHICHTETE METALLOXIDNANOPARTIKEL UND VERWENDUNG DAVON IN KOSMETISCHEN ZUSAMMENSETZUNGEN
Title (fr)
NANOPARTICULES D'OXYDE MÉTALLIQUE REVÊTUES DE LIGNINE ET LEUR UTILISATION DANS DES COMPOSITIONS COSMÉTIQUES
Publication
Application
Priority
- US 201662339603 P 20160520
- CA 2017050613 W 20170519
Abstract (en)
[origin: WO2017197530A1] While titanium dioxide is commonly used as a sunscreen, concerns persist regarding the catalytic activity of TiO2 and its generation of reactive oxygen species (ROS). The present invention attempts to address these concerns by providing TiO2 nanoparticles coated with lignin, yielding a thin-coated metal oxide nanoparticle. The lignin coating is presumed to scavenge ROS before they diffuse away from the particles and interact with the user's body or other components of a cosmetic formulation (such as organic sunscreens). Other metal oxides coated with lignin are also disclosed, as well as methods for preparing lignin coated metal oxide nanoparticles.
IPC 8 full level
A61K 8/84 (2006.01); A61K 8/11 (2006.01); A61K 8/29 (2006.01); A61Q 17/04 (2006.01); B82Y 30/00 (2011.01); B82Y 40/00 (2011.01)
CPC (source: EP)
A61K 8/0241 (2013.01); A61K 8/27 (2013.01); A61K 8/29 (2013.01); A61K 8/84 (2013.01); A61K 9/5176 (2013.01); A61K 33/24 (2013.01); A61K 33/30 (2013.01); A61Q 17/04 (2013.01); A61K 2800/413 (2013.01); A61K 2800/624 (2013.01); A61K 2800/651 (2013.01); B82Y 30/00 (2013.01); B82Y 40/00 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2017197530 A1 20171123; CA 3030443 A1 20171123; EP 3458026 A1 20190327; EP 3458026 A4 20200422
DOCDB simple family (application)
CA 2017050613 W 20170519; CA 3030443 A 20170519; EP 17798467 A 20170519