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US 12,686,788 B2Granted
Coating compositions having covalently bound ultraviolet absorbers
AssigneeBASF SE
InventorsPaul E. Share, Mervin G. Wood
Life of this patent
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Abstract
A coating composition includes a coating resin, a triazine ultraviolet light absorber of Formula (I), and a hindered light amine stabilizer, where Formula (I) has the structure:
Claims9
A coating composition comprising:
- a coating resin;
- and
- two or more triazine ultraviolet light absorbers of Formula (I);
- wherein:
- Formula (I) has the structure:
- R1 is a substituted C1-C18 alkyl or C3-C18 branched chain alkyl and wherein the substituent is OH or OC(O)R5, and
- R5 is a C9 branched chain alkyl;
- each R3 is independently H,
- the two or more triazine ultraviolet light absorbers are covalently linked to the coating resin through R1, wherein the covalent link is between the coating resin and the one or more OH, or —OC(O)R5 of R1;
- wherein the coating resin is covalently linked to the R1 group of Formula (I) wherein the covalent linkage is selected from the group consisting of —OC(O)NH—, and —OC(O)NR5—;
- wherein the triazine ultraviolet light absorber of Formula (I) is present from about 0.1 wt. % to about 25 wt. % on a total solids basis;
- and the coating resin is present in the coating composition from 30 to 90 percent by weight based on the solids content.
9 more elements
A coating composition comprising:
- a coating resin;
- and
- triazine ultraviolet light absorbers comprising a mixture of
- or a mixture of
- wherein neoC9H19 is C9 branched chain alkyl;
- wherein the triazine ultraviolet light absorbers are present from about 0.1 wt. % to about 25 wt. % on a total solids basis;
- and the coating resin is present in the coating composition from 3 0 to 90 percent by weight based on the solids content.
4 more elements
Dependencies are inferred from the claim text.