Patent ID: 8080286
Filing Date: 2011-12-20
Classification: C09D,H01L,Y10T

Abstract:
1. Process for the preparation of a silicone coating of low dielectric constant, comprising the steps of a) depositing a film-forming silicone composition on the surface of a substrate, said silicone composition comprising: (i) at least one crosslinkable film-forming silicone resin, (ii) at least one α,ω-hydroxylated, essentially linear silicone oil capable of degrading under the action of heat, and (iii) at least one solvent capable of rendering the silicone resin (i) compatible with the silicone oil (ii), b) removing the solvent (iii), and, simultaneously or sequentially, c) curing the film-forming silicone composition by heating; wherein said silicone coating comprises pores with a median size of about 250 nm or below.