High performance silicon based coating compositions

摘要

A silicon-based coating composition for a wide range of mold surfaces, which composition is formed from a mixture of constituents comprising appropriate portions of silazane, siloxane, and silane, and optionally organic solvent. The composition, after curing, results in an extreme release product that is non-transferable to the finished part, allowing for proper adhesion of coatings or adhesives to the finished surface without additional surface preparation. The cured coatings are ultrathin, having a thickness between 0.1 μm and 3 μm, and having a hardness between about 4H and about 9H.

主权项

1. A silicon-based coating composition, comprising:
a. 56% to 76% (w/w of the total composition) polysilazane; b. 0.7% to 1% (w/w of the total composition) polysiloxane; c. 1% to 2% (w/w of the total composition) polysilane of a formula (R1R2Si)n, wherein n is greater than 1, and wherein R1 and R2 are the same or different and can be alkyl, alkenyl, cycloalkyl, alkylamino, aryl, aralkyl, or alkylsilyl; and d. 21% to 43% (w/w of the total composition) organic solvent.