COATING, COATING COMPOSITION AND METHOD OF FORMING COATING

摘要

A coating on a substrate which endows the substrate with a desired surface property, the coating comprising a cross-linked polysiloxane containing X'- and X-groups attached to different Si atoms wherein the groups X'- are monovalent organic groups which provide the desired surface property and the groups X- are monovalent organic groups which are reactive with a group on the substrate surface and have a higher surface tension than the groups X'-, said coating being bonded to said substrate by reaction of X-groups with substrate surface groups reactive therewith. In one embodiment a non-wetting coating is provided wherein the X'- group has the formula CF3Z- where Z is a divalent organic group or the formula CH3(CH2)t where t is at least 3.