Fluorine and acrylic modified silicone resins

Claim 1

In a process for producing a paint coating composition containing a polymeric binder comprising a fluorinated-silicone-acrylic polymer, the process steps for preparing the polymeric binder comprising: reacting a silicone resin comprising a silicone molecule with a coreactive fluorinated alcohol to produce a fluorinated silicone molecule, where said silicone molecule has a number average molecular weight above 500 and contains an average of at least two reactive groups per silicone molecule selected from hydroxy or methoxy groups, where said reactive groups are coreactive with the alcohol groups on the fluorinated alcohol, and where the silicone molecule contains at least 10% excess equivalent reactive groups relative to the coreactive alcohol groups on the fluorinated alcohol; and reacting the fluorinated-silicone molecule by in-situ copolymerization with ethylenically unsaturated monomers comprising by weight between 30% and 95% acrylic monomers, between 1% and 50% hydroxyl monomers, with the balance being other ethylenically unsaturated monomers to produce an in-situ formed fluorinated-silicone-acrylic terpolymer comprising by weight between 1% and 10% copolymerized fluorinated alcohol, between 10% and 50% copolymerized silicone resin, and between 40% and 90% copolymerized acrylic polymer; and using the fluorinated-silicone-acrylic terpolymer as a polymeric binder in a coating composition.