公开(公告)号：EP3119845A1

公开(公告)日：2017-01-25

申请号：EP15714375.1

申请日：2015-03-20

Applicant: Innosense LLC

Inventor： SAMPATHKUMARAN, Uma ,  YU, Kevin ,  SELMAN,Corey

IPC: C09D175/00 ,  C08L83/02 ,  G02B1/10 ,  G02B1/18

CPC classification number: C09D175/04 ,  B82Y20/00 ,  C08G77/26 ,  C08G77/46 ,  C08G2290/00 ,  C08K3/36 ,  C08K7/26 ,  C08K2201/005 ,  C08K2201/011 ,  C09D175/00 ,  G02B1/04 ,  G02B1/18 ,  C08K3/34 ,  C08L83/02 ,  C08L75/04 ,  C08G18/10 ,  C08G18/282

Abstract: The present invention relates to hydrophilic anti-fog coatings. In particular, the coatings use two types of nanoscale particles, colloidal silica and porous organosilicate micelles, in a polyurethane matrix. The invention is an anti-fog coating for optically clear substrates (polycarbonate, polyurethane, nylon, polyester and other clear plastics) without the need for a primer and glass or oxide substrates with an additional primer layer, comprising monosized colloidal silica nanoparticles and porous organosilicate micelles in a polyurethane matrix. The silica is preferably 1-5% by weight and the micelles are loaded at 0.1 to 10% volume percentage by volume. The polyurethane prepolymer is dissolved at 10-40% by weight in a mixture of tertiary amyl alcohol and diacetone alcohol to customize for dip, flow or spray coating processes.