Patent ID: 7674398

Claim:
A coumarin composition comprising the following substances: (i) substituted coumarins according to general formula (I): where: n is an integer chosen from 1, 2, 3 or 4; R 1 corresponds to C1-C4 alkyl, C1-C4 alkenyl, C1-C4 alkinyl, C1-C4 alcoxyls, aryl, C1-C4 acyl, halides, cyano, C1-C4 dialkylamines, methylenedioxy, sulfonamides, sulfoxamides, and mixtures thereof, where each of these radicals can be optionally substituted; R 2 corresponds to C1-C4 alkyl, C1-C4 alkenyl, C1-C4 alkinyl, C1-C4 alcoxyls, aryl, C1-C4 acyl, halides, cyano, C1-C4 dialkylamines, methylenedioxy, sulfonamides, sulfoxamides, and mixtures thereof, where each of these radicals can be optionally substituted; (ii) volatile organic solvent; and (iii) non-volatile organic solvent.