PARTICULATE METAL OXIDE PARTICLES COMPRISING A METAL OXIDE CORE AND A COATING LAYER COMPRISING AN INORGANIC MATERIAL, A SILANE COUPLING AGENT AND/OR A HYDROPHOBIZING AGENT

World Intellectual Property Organization Patent

APP PUB NO WO-2014023932-A1
SERIAL NO

PCTGB2013051937

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Abstract

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A particulate metal oxide has a metal oxide core and a coating layer containing an inorganic material and (i) a quaternary silane coupling agent, and/or (ii) a silane coupling agent and a hydrophobizing agent. Preferred materials are titanium dioxide core particles, an amino organosilane coupling agent and a fatty acid hydrophobizing agent. The particulate metal oxide is suitable for use in forming a dispersion, and the particles and dispersion can be used in an end-use sunscreen composition which is transparent, exhibits effective UV absorption properties, reduced photoactivity, and/or improved skin feel.

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Patent Owner(s)

Patent OwnerAddress
CRODA INT PLCGBBRITISH NORTH HUMBERSIDE

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Inventor(s)

Inventor Name Address
TOOLEY IAN ROBERT CHESHIRE WA3 4NX
SAYER ROBERT MICHAEL BILLINGE WIGAN WN5 7DH
STANILAND PAUL MARTIN ALTRINCHAM CHESHIRE WA14 5GQ

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