Coating process and composition for same
First Claim
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1. A process for coating a surface of an automotive vehicle, comprising:
- a) providing a surface of an automotive vehicle, the surface being part of a bedliner of the automotive vehicle;
b) contacting the surface to form a coating with a composition comprising;
i) a first component that includes an isocyanate component including an aliphatic isocyanate as a major portion of the isocyanate component; and
ii) a second component that is maintained separate from the first component until mixed in a dispenser for application to the surface, the second component including an amine comprised of an amount of at least one aliphatic primary amine and an amount of at least one secondary amine wherein the second component includes at least 40% of an aspartic acid ester by weight;
wherein upon two weeks of water immersion at 32°
C., or exposure to 100% relative humidity at 38°
C., the coating exhibits substantially no blistering, dulling or softening or loss of adhesion, and wherein the coating exhibits substantially no blistering, cracking or charring when sag panel tested for two weeks at about 70°
C.; and
wherein the amount of the at least one secondary amine is between about 40% and about 80% by volume of the second component and the at least one primary amine is between about 10% and about 40% of the second component; and
wherein the coating has a thickness of 1 mm to 10 mm.
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Abstract
There is disclosed a composition for forming a protective coating upon a substrate. The composition has been found particularly useful for forming a protective coating upon components of automotive vehicles, such as a bedliner for a pick-up truck. The composition may include, without limitation, an isocyanate component and an amine component and optionally includes one or more of a catalyst, stabilizer, pigment, fire retardant or other additives.
52 Citations
32 Claims
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1. A process for coating a surface of an automotive vehicle, comprising:
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a) providing a surface of an automotive vehicle, the surface being part of a bedliner of the automotive vehicle; b) contacting the surface to form a coating with a composition comprising; i) a first component that includes an isocyanate component including an aliphatic isocyanate as a major portion of the isocyanate component; and ii) a second component that is maintained separate from the first component until mixed in a dispenser for application to the surface, the second component including an amine comprised of an amount of at least one aliphatic primary amine and an amount of at least one secondary amine wherein the second component includes at least 40% of an aspartic acid ester by weight; wherein upon two weeks of water immersion at 32°
C., or exposure to 100% relative humidity at 38°
C., the coating exhibits substantially no blistering, dulling or softening or loss of adhesion, and wherein the coating exhibits substantially no blistering, cracking or charring when sag panel tested for two weeks at about 70°
C.; andwherein the amount of the at least one secondary amine is between about 40% and about 80% by volume of the second component and the at least one primary amine is between about 10% and about 40% of the second component; and wherein the coating has a thickness of 1 mm to 10 mm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A process for coating a surface of an automotive vehicle bed liner, comprising:
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a) providing a surface of an automotive vehicle bed liner; b) robotically spraying the surface with a composition consisting essentially of; i) a first component that includes an isocyanate including an aliphatic isocyanate as a major portion of the isocyanate component; ii) a second component that is maintained separate from the first component until mixed in a dispenser for application to the surface, the second component including an amine in an amount so that the amine and the isocyanate are present in an amount of about 1;
10 to about 10;
1 parts by volume, the amine being comprised of an amount of at least one aliphatic primary amine and an amount of at least one secondary amine; andiii) a static controlling agent that includes a potassium salt; wherein the amount of the at least one secondary amine is between about 40% and about 80% by volume of the second component and the at least one primary amine is between about 10% and about 40% of the second component; and wherein the isocyanate has a residual monomer level that is less than about 1% by weight; and wherein the coating has a thickness of 1 mm to 10 mm. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A process for coating a surface of an automotive vehicle bed liner, comprising:
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a) providing a surface of an automotive vehicle bed liner; b) robotically spraying the surface with a composition comprising; i) a first component that includes an isocyanate component including an aliphatic isocyanate as a major portion of the isocyanate component; and ii) a second component that is maintained separate from the first component until mixed in a dispenser for application to the surface, the second component including a secondary amine that is a aspartic acid ester in an amount so that the amine and the isocyanate are present in an amount of about 1;
10 to about 10;
1 parts by volume, the amine being comprised of an amount of at least one aliphatic primary amine and an amount of at least one secondary amine;wherein upon two weeks of water immersion at 32°
C., or exposure to 100% relative humidity at 38°
C., the coating exhibits substantially no blistering, dulling or softening or loss of adhesion, and wherein the coating exhibits substantially no blistering, cracking or charring when sag panel tested for two weeks at about 70°
C.; andwherein the composition forms a polyurea coating; and wherein the coating has a thickness of 1 mm to 10 mm. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32)
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Specification