PHOTOSTABILIZER OF CYCLIC EPOXIDE-HALS ADDITION POLYMER, PROCESS FOR PREPARING THE SAME, AND USE THEREOF

• Main Authors: KIM, JIN HYEOK, CHAE, KYU HO
• Format: Patent
• Language: English; Korean
• Published: 10.09.2009
• Subjects: ADHESIVES; CHEMISTRY; DYES; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; POLISHES

A cyclic epoxide-HALS UV antioxidant, its preparation method, and a resin composition containing the antioxidant are provided to improve thermal stability, to enhance photostability and the compatability of polymers compared with the already-known UV oxidant and to improve weather resistance without the deterioration of various properties of polymer itself. A cyclic epoxide-HALS UV antioxidant is represented by the formula 1, wherein R is an alkyl group] of C1~C20, an allyl group, an oxyalkyl group, an oxyaryl group, a dioxyalkyl group, a dioxyaryl group, an aminoalkyl group, or an aminoaryl group; and n is a natural number of 1 ~ 10. A manufacturing method of the cyclic epoxide-HALS UV antioxidant comprises the steps of dissolving a diepoxide derivative and 4-amino-2,2,6,6-tetramethyl-piperidine by an identical amount in a solvent or without a solvent and reacting them for 1~50 hours; precipitating the reactant, filtering the precipitate and drying the filtered one at 40~80 °C; and dissolving the product in tetrahydrofuran, re-precipitating it in an organic solvent, and filtering and drying it.