Coating compositions, methods of making and uses thereof
AssigneeJames Hardie Technology Limited
InventorsYongjun Chen, Caidian Luo, Luan Giang
Life of this patent
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Abstract
A coated building article comprising a fiber cement cladding element may be coated with a system designed to achieve a desired appearance. The coating system may comprise a first coating layer and a second coating layer wherein the second coating layer comprises at least one layer of a low gloss coating composition which has a light reflectance of 5% or less when light is shone onto the surface of the coated article at an angle of 60° or 85° to the surface is positioned on at least a portion of the front face of the fiber cement cladding element. Also provided is a method of coating the building article with a low gloss coating composition.
Claims20
A coated fiber cement cladding element comprising:
- a front face, a rear face and a side face, wherein the rear face is spaced apart from front face and the side face is between and contiguous to the front face and the rear face and wherein the front face further comprises a textured finish;
- a first coating layer on at least a portion of the front face of the fiber cement cladding element;
- and
- a second coating layer on at least a portion of the first coating layer on at least a portion of the front face of the fiber cement cladding element, wherein the second coating layer comprises at least one layer of a low gloss coating composition which has a light reflectance of 5% or less when light is shone onto the surface of the coated fiber cement cladding element at an angle of 60° or 85° to the surface, wherein the layer of low gloss coating composition comprises a paint composition and a treatment agent incorporated therein, wherein the treatment agent is disposed immediately below the uppermost surface of the paint composition to disrupt film formation of the uppermost surface, thereby reducing the light reflectance of the paint composition without impacting the integrity and durability of the paint composition;
- and
- wherein the wt. % concentration of the treatment agent is between 3.75 wt. % and 10 wt. %.
A coated fiber cement cladding element comprising:
- a front face, a rear face and a side face, wherein the rear face is spaced apart from the front face and the side face is between and contiguous to the front face and the rear face and wherein the front face further comprises a textured finish;
- a first coating layer on at least a portion of the front face of the fiber cement cladding element;
- and
- an exterior paint layer disposed on the first coating layer, the exterior paint layer comprising a paint composition and trisodium phosphate incorporated therein, wherein the trisodium phosphate is dispersed in the paint composition immediately below the uppermost surface of the paint composition to interfere with film formation on the uppermost surface to reduce light reflectance of the exterior paint layer without changing the pigment volume concentration of the paint composition;
- and
- wherein the wt. % concentration of trisodium phosphate is between 3.75 wt. % and 10 wt. %.
A coated fiber cement cladding element comprising:
- a front face, a rear face and a side face, wherein the rear face is spaced apart from the front face and the side face is between and contiguous to the front face and the rear face and wherein the front face further comprises a textured finish;
- a first coating layer on at least a portion of the front face of the fiber cement cladding element;
- and
- an exterior paint layer disposed on the first coating layer, the exterior paint layer comprising a paint composition and monosodium phosphate incorporated therein, wherein the monosodium phosphate is dispersed in the paint composition immediately below the uppermost surface of the paint composition to interfere with film formation on the uppermost surface to reduce light reflectance of the exterior paint layer without changing the pigment volume concentration of the paint composition;
- and
- wherein the wt. % concentration of monosodium phosphate is between 3.75 wt. % and 10 wt. %.
Dependencies are inferred from the claim text.