Method for producing thick crack-free coatings from hydrogen silsesquioxane resin

摘要

This invention pertains to a method for producing crack-free, insoluble and greater than 1.25 mu m thick coatings from hydrogen silsesquioxane resin compositions. This method comprises applying a fillerless hydrogen silsesquioxane resin composition onto a substrate and thereafter heating said resin at a temperature of less than 500 DEG C. for a controlled period of time to produce the crack-free coating having a thickness of greater than 1.25 mu m. The resins may be cured in either an inert or oxygen containing environment.