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1. (WO2017015885) ANTI-SOILING COMPOSITIONS COMPRISING SILICA NANOPATICLES AND FUNCTIONAL SILANE COMPOUNDS AND COATED ARTICLES THEREOF

Pub. No.:    WO/2017/015885    International Application No.:    PCT/CN2015/085383
Publication Date: Fri Feb 03 00:59:59 CET 2017 International Filing Date: Thu Jul 30 01:59:59 CEST 2015
IPC: C09D 5/16
C03C 17/00
C03C 17/22
Applicants: 3M INNOVATIVE PROPERTIES COMPANY
YIN, Long
Inventors: YIN, Long
YU, Zhigang
JING, Naiyong
Title: ANTI-SOILING COMPOSITIONS COMPRISING SILICA NANOPATICLES AND FUNCTIONAL SILANE COMPOUNDS AND COATED ARTICLES THEREOF
Abstract:
Provided is a coated article comprising a substrate and a dried coating which comprises a first set of spherical silica nanoparticles having an average diameter of less than 20 nm and a second set of spherical silica nanoparticles having an average diameter of 20 nm to 120 nm. The alkoxy silane compound comprises an epoxy functional group or a carboxylic acid functional group. Also provided is a coating composition comprising an acidic aqueous dispersion which comprises the described first and second set of spherical silica nanoparticles and silane compound.