Self-stratifying coating
AssigneesToyota Motor Engineering & Manufacturing North America, Inc., Eastern Michigan University
InventorsCynthia G. Templeman, Jamil Baghdachi, Punthip Talapatcharoenkit
Life of this patent
Estimating the term…
Abstract
The present invention discloses a reactivity-based self-stratifying coating composition. The coating composition can include a polyol, silsesquioxane, a polyester polyol, and a crosslinker that form a mixture within a solvent. The polyol can be selected from a fluorinated polyether, a fluoroethylene-alkyl vinyl ether and/or a combination thereof. The silsesquioxane can be an epoxy functional silsesquioxane having a formula of (R)6(C6H11O2)2(SiO1.5)8 where R can be selected from hydrogen, methyl, ethyl, propyl, butyl, pentyl, hexyl, cyclopentyl, cyclohexyl, benzyl, phenyl, and isomers thereof. In some instances, the epoxy functional silsesquioxane can be a di-epoxy silsesquioxane.
Claims8
A reactivity-based self-stratifying coating comprising:
- a self-stratified coating containing silicon, having two distinct layers and containing a polyol other than a polyester polyol, a silsesquioxane, a polyester polyol and a crosslinker;
- wherein the polyol other than a polyester polyol, silsesquioxane and polyester polyol are crosslinked and the silicon is segregated to one of the two distinct layers, and the silsesquioxane is an epoxy functional silsesquioxane having a formula (R)6(C6H11O2)2(SiO1.5)8 and R is selected from the group consisting of hydrogen, methyl, ethyl, propyl, butyl, pentyl, hexyl, cyclopentyl, cyclohexyl, benzyl, phenyl and isomers thereof.
Dependencies are inferred from the claim text.