公开(公告)号：US20180208779A1

公开(公告)日：2018-07-26

申请号：US15416019

申请日：2017-01-26

Applicant: The Texas A&M University System

Inventor： Jaime Christopher Grunlan ,  Chaoqun Zhang

IPC: C09D5/18 ,  C09D105/08 ,  C09D7/12 ,  B05D1/02 ,  B05D1/18 ,  B05D1/28

CPC classification number: C09D5/18 ,  B05D1/02 ,  B05D1/18 ,  B05D1/28 ,  C08K3/346 ,  C09D7/61 ,  C09D105/08

Abstract: A coating for protecting a metal substrate from corrosion comprising a first composition applied on or over the metal substrate and a second composition applied on or over the first composition. The first composition is positioned between the second composition and the metal substrate, the first composition includes a first layer directly applied on or over the metal substrate and a second layer directly applied on or over the first layer, and the first layer of the first composition is positioned between the second layer of the first composition and the metal substrate. The first layer of the first composition comprises positively charged polymers and the second layer comprises negatively charged polymers and the second composition comprises positively charged polymers and negatively charged silicate clay.