Low reflectance chemical resistant coating compositions
AssigneeThe Sherwin-Williams Company
InventorsSunil C. Gheewala, Mark J. Wytiaz
Life of this patent
Estimating the term…
Abstract
A chemical resistant water reducible coating composition comprising: (i) an active hydrogen functional water dispersible polyurethane polymer; (ii) a crosslinking agent reactive with the active hydrogen functional polymer under curing conditions: (iii) a mixture of polymeric beads dispersed within the polymer wherein the mixture comprises: (a) polyolefin beads having a mean particle size as measured by laser diffraction analysis of about 5 to 40 microns; and (b) polyurea polymeric beads having a mean particle size of less than 15 microns wherein the mixture of polymeric beads is present at a level to provide an 85° gloss less than 3 and a 60° gloss less than 3.
Claims13
A chemical resistant water reducible coating composition comprising:
- (i) an active hydrogen functional water dispersible polyurethane polymer;
- (ii) a crosslinking agent reactive with the active hydrogen functional polymer under curing conditions;
- (iii) a mixture of polymeric beads dispersed within the polymer wherein the mixture comprises:
- (a) polyolefin beads having a mean particle size of about 5 to 40 microns;
- and
- (b) polyurea polymeric beads having a mean particle size of less than 15 microns
- wherein the mixture of polymeric beads is present at a level to provide an 85° gloss less than 3 and a 60° gloss less than 3.
A water reducible coating composition comprising:
- (i) an active hydrogen functional water dispersible polymer;
- (ii) a crosslinking agent reactive with the active hydrogen functional polymer;
- (iii) polyolefin beads having a mean particle size of about 5 to 40 microns;
- and
- (iv) polyurea beads having a mean particle size of less than about 15 microns.
Dependencies are inferred from the claim text.