Reactive resins and blends for low refractive index and low dielectric constant applications

摘要

Highly fluorinated silicone resins and processes for their preparation are disclosed. The silicone resin comprises M, at least one T, optionally D and optionally a Q type monomer and is crosslinkable. The resin has a fluorine content of at least 55% by weight and a very low refractive index of less than 1.4. The resin is formed in a one - step process and requires the use of very specific solvents. Preferably, the resin comprises a first T type monomer having a fluoroalkane group to provide fluorine to the resin. Preferably, the resin comprises a second T-type monomer having a (meth) acryloyl functional group and is capable of crosslinking. The resin forms an optically transparent adhesive in an effective liquid phase. The resin may be further combined with highly fluorinated (meth) acrylate monomers or perfluoropolyethers to provide much lower refractive index and improved adhesive properties.