公开(公告)号：US11814540B2

公开(公告)日：2023-11-14

申请号：US17054626

申请日：2020-06-02

Applicant: BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY

Inventor： Muhammad Rabnawaz ,  Syeda Shamila Hamdani

IPC: C09D189/00 ,  C09D103/02 ,  C09D105/08 ,  C09D129/04

CPC classification number: C09D189/00 ,  C09D103/02 ,  C09D105/08 ,  C09D129/04

Abstract: The disclosure relates to omniphobic coatings, related articles including such coatings, and related method for forming such coatings or articles, for example biobased and/or biodegradable omniphobic coatings with high barrier properties. The omniphobic coating includes an oleophobic and hydrophilic first layer, and a hydrophobic and optionally oleophilic second layer adjacent to the first layer. A corresponding omniphobic coated article can include the omniphobic coating on a substrate such as a porous cellulosic or paper substrate, for example to provide a water- and oil/fat/grease-resistant coating for a paper-based product. The first layer of the omniphobic coating is adjacent to the substrate and the second layer is adjacent to the first layer at a position further from the substrate than the first layer. The omniphobic coating can be applied to a substrate in a layer-by-layer process, and the coated article can be recycled by extraction to remove the coating and recover the substrate material, for example in a re-pulping process.