Patent ID: 9527108
Filing Date: 2016-12-27
CPC Classification: B05D,C08F,C09D,G03F

Claim Text:
1. Method for preparing a surface selected from silicon, silicon having a thermal or native oxide layer, germanium, platinum, tungsten, gold, titanium nitrides, graphenes, or BARC (bottom anti-reflecting coating), utilizing n random copolymers prepared by controlled radical polymerization, which are the same or different, n being an integer greater than or equal to 2, said method comprising the following n successive steps: (a) contacting a solution or dispersion of polymer i, wherein i is the successive Integral values from 1 to n, with the surface to be treated, then evaporating a dissolution or dispersion solvent used for contacting the polymer i with the surface to be treated, followed by a step of chemical grafting polymer i to the surface; (b) repeating step (a) with the polymer j=i+1 on the surface treated by the polymer i in step (a) until j=n; and followed by applying a block copolymer on the surface thus treated.