A composite hybrid coating having a thick highly transparent hard coating with excellent barrier properties is described. The hybrid coating is the gelled dispersion of nanoparticles in a sol with least one hydrolyzable silane and at least one hydrolyzable metal oxide precursor. In one embodiment a composite hybrid coating is formed by the curing of a dispersion formed by the addition of a suspension of boehmite nanoplatelets in a sol prepared by the hydrolysis of tetraethoxysilane, ?-glycidoxypropyltrimethoxysilane and titanium tetrabutoxide in ethanol. A plastic substrate can be coated with the dispersion and the dispersion gelled to a thickness of at least 5 µm with heating to less than 150°C.
申请公布号
WO2009151664(A2)
申请公布日期
2009.12.17
申请号
WO2009US35864
申请日期
2009.03.03
申请人
UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.;ASUKA, MASAHIRO;SIGMUND, WOLFGANG, M.