Patent ID: 9657228
Date: 2017-05-23
CPC Classifications: A61K,A61Q,C07C,C07D,C09K

Claim:
1. A method of preparing a UV-absorbing compound that comprises the steps: (a) selecting a UV absorber having at least one hydroxyl group, primary amine, or secondary amine group, and further comprising one or more of a ρ-aminobenzoic derivative, benzophenone derivative, benzotriazole derivative, benzimidazole derivative, camphor derivative, cinnamate, quinone, salicylate, or triazine derivative, (b) selecting a preformed ene graft reaction product formed from an ene graft reaction between an anhydride coupling agent and an unsaturated fatty acid, (c) creating a mixture comprising the components of steps (a) and (b), and (d) heating said mixture to a temperature from about 50° C. to about 250° C.