Direct-to-metal and exterior durable non-skid coating
A non-skid coating described herein attempts to overcome the deficiencies of the conventional coatings with improved external durability and color retention, a reduced level of VOCs, and direct-to-metal (DTM) adhesion using organo-siloxane chemistry. The non-skid coating has a first component having an amino-functional siloxane resin; a second component having a non-aromatic epoxy resin; a spherical filler for lowering viscosity; a pigment; a coarse aggregate; and a thixotropic agent. The amino-functional siloxane resin can be an amino-functional methyl phenyl polysiloxane, diphenyl polysiloxane or silsesquioxane-based resin. The non-aromatic epoxy resin can be cycloaliphatic or aliphatic. The first component is about 5% to 20% weight of the coating, and the second component is about 80% to 95% weight of the coating.
1. A method for producing a non-skid coating comprising:
mixing resins which consist of
(a) an amino-functional siloxane resin, selected from (i) an amino-functional silsesquioxane-based resin and (ii) 3-[2-(aminoethyl)amino]propyl methyl dimethylpolysiloxane, and
(b) a non-aromatic epoxy resin;
wherein the amino-functional siloxane resin and the non-aromatic epoxy resin are the only resins in the coating; and
forming a non-skid coating by applying the mixed components to a surface with a roller.
2. The method of claim 1 , wherein the amino-functional siloxane resin is the amino-functional silsesquioxane-based resin.
3. The method of claim 2 , wherein the amino-functional silsesquioxane-based resin is poly [(2-aminoethyl)aminopropyl] methoxy(dimethyl)siloxane, polymer with [(2-aminoethyl)aminopropyl]phenylsilsesquioxane, OH-terminal.
4. The method of claim 1 , wherein the non-aromatic epoxy resin is cyclohexanol, 4,4-(1-methylethylidene)bis-, polymer with (chloromethyl)oxirane, diglycidyl ether of cyclohexane dimethanol, diglycidyl ether of neopentyl glycol, diglycidyl ether of 1,4-butanediol, trimethylol propane triglycidyl ether, polyglycidyl ether cyclosiloxane monomer, or glycidyl ether polyhedral oligomeric silsesquioxane.
5. The method of claim 1 , wherein the resins are mixed with a spherical filler, a pigment, a thixotropic agent, and an aggregate.
6. The method of claim 1 ;
wherein the mixed resins are applied to the surface with a phenolic roller; and
wherein the coating has a peak and valley profile.
7. The method of claim 1 , wherein the non-skid coating, following the mixing, includes about 5% to 20% by weight of the amino-functional siloxane resin.
8. The method of claim 1 , wherein the non-skid coating, following the mixing, includes about 5% to 20% by weight of the non-aromatic epoxy resin.
9. The method of claim 1 , wherein the resins are mixed with a catalyst.
10. The method of claim 1 , wherein the non-aromatic epoxy resin is aliphatic or cycloaliphatic.
11. The method of claim 1 , wherein the non-aromatic epoxy resin comprises cyclohexanol, 4,4-(1-methylethylidene)bis-, polymer with (chloromethyl)oxirane.
12. The method of claim 1 , wherein the non-aromatic epoxy resin comprises polyglycidyl ether cyclosiloxane monomer, having the structure
or glycidyl ether polyhedral oligomeric silsesquioxane, having the structure
13. The method of claim 1 , wherein the coating comprises about 91% to about 95% solids by weight.
14. The method of claim 1 , wherein the coating comprises about 5% to about 20% by weight of the spherical filler.