The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 2015
Filed:
Oct. 13, 2011
Nikhil D. Kalyankar, Hayward, CA (US);
Zhi-wen Sun, San Jose, CA (US);
Jeroen Van Duren, Palo Alto, CA (US);
Mark Lewis, Ypsilanti, MI (US);
Liang Liang, Taylor, MI (US);
Nikhil D. Kalyankar, Hayward, CA (US);
Zhi-Wen Sun, San Jose, CA (US);
Jeroen Van Duren, Palo Alto, CA (US);
Mark Lewis, Ypsilanti, MI (US);
Liang Liang, Taylor, MI (US);
Intermolecular, Inc., San Jose, CA (US);
Guardian Industries Corporation, Auburn Hills, MI (US);
Abstract
Methods and compositions for forming porous low refractive index coatings on substrates are provided. The method comprises coating a substrate with a sol-formulation comprising silica based nanoparticles and an alkyltrialkoxysilane based binder. Use of the alkyltrialkoxysilane based binder results in a porous low refractive index coating having bimodal pore distribution including mesopores formed from particle packing and micropores formed from the burning off of organics including the alkyl chain covalently bonded to the silicon. The mass ratio of binder to particles may vary from 0.1 to 20. Porous coatings formed according to the embodiments described herein demonstrate good optical properties (e.g. a low refractive index) while maintaining good mechanical durability due to the presence of a high amount of binder and a close pore structure.