Abrasion resistant coatings
AssigneeHontek Corporation
InventorShek C. Hong
Life of this patent
Estimating the term…
Abstract
A method of forming a matte topcoat for rotor blades, propellers and other articles used to protect a leading edge substrate against high speed liquid or solid particle erosion including premixing a concentrate of flatting agent dispersed in a solvent, reducing the moisture content using molecular sieves, blending the concentrate of flatting agent into a polyurethane or polyurea composition and forming a protective coating comprising a matte layer on the leading edge substrate.
Claims13
A method of forming a matte coating for protecting a leading edge substrate against high speed liquid or solid particle erosion, the method comprising:
- premixing a concentrate of flatting agent dispersed in a solvent;
- blending said concentrate of flatting agent dispersed in solvent into a polyurethane or polyurea composition formed by the reaction of a polyisocyanate or an isocyanate-terminated prepolymer and a curing agent selected from a group consisting of an aldimine, a ketimine, a polyaspartic ester and mixtures thereof and an optional cocuring agent selected from the group consisting of a polyamine and a polyol and mixtures thereof;
- depositing a matte coating composition;
- and
- forming the matte coating on said leading edge substrate.
A method of forming a matte coating composition for protecting a leading edge substrate, the method comprising:
- premixing a concentrate of flatting agent dispersed in a solvent;
- reducing the moisture content of the flatting agent concentrate with molecular sieves;
- and
- blending said concentrate of flatting agent into a polyurethane or polyurea composition comprising a polyisocyanate or an isocyanate-terminated prepolymer.
A method of forming a matte coating composition for protecting a leading edge substrate against high speed liquid or solid particle erosion comprising:
- premixing a concentrate of flatting agent dispersed in a solvent;
- reducing the moisture content of the flatting agent concentrate with molecular sieves;
- and
- blending said concentrate of flatting agent dispersed in solvent into a polyurethane or polyurea composition comprising a polyisocyanate or an isocyanate-terminated prepolymer and a curing agent selected from a group consisting of an aldimine, a ketimine, a polyaspartic ester and mixtures thereof and an optional cocuring agent selected from the group consisting of a polyamine and a polyol and mixtures thereof.
A method of forming a matte topcoat for protecting a leading edge substrate against high speed liquid or solid particle erosion, the method comprising:
- premixing a concentrate of flatting agent dispersed in a solvent;
- blending said concentrate of flatting agent dispersed in solvent into a polyurethane or polyurea composition formed by the reaction of a polyisocyanate or an isocyanate-terminated prepolymer and a curing agent selected from a group consisting of an aldimine, a ketimine, a polyaspartic ester and mixtures thereof and an optional cocuring agent selected from the group consisting of a polyamine and a polyol and mixtures thereof;
- depositing a matte coating composition;
- and
- forming the matte topcoat on said leading edge substrate.
Dependencies are inferred from the claim text.