Patent ID: 8586693

Claim:
A method of production of a coated substrate comprising applying to a substrate a composition comprising at least one compound of formula I and optionally at least one compound of formula II R a Si(R 1 ) n (X 1 ) 3-n I R b Si(R 2 ) m (X 2 ) 3-m II wherein R a is a straight-chain or branched C(1-24) alkyl group, R b is an aromatic group, which is linked by a single covalent bond or a spacer unit to the Si— atom, R 1 and R 2 are each independently a lower alkyl group, X 1 and X 2 are each independently a hydrolysable group, and n, m are independently 0 or 1; and wherein the composition is applied as a coating to the substrate by chemical vapour deposition, to form a coating in the form of filaments.