SUPERMOLECULAR INTERCALATION-STRUCTURED UV ABSORBER AS WELL AS ITS PREPARATION METHOD AND USE

摘要

A supermolecular intercalation-structured UV absorber as well as its preparation method and use. The present invention is characterized by the UV absorber utilizing the property of the layered double hydroxides (LDHs), which may be intercalation-structured, intercalaring the 5-benzotriazolyl-4-hydroxy-3-sec-butylbenzenesulfonic acid (BZO) into the interlayer of the LDHs, and then obtaining a supermolecular intercalation-structured material in which BZO anion serves as interlayer guest molecule. The supermolecular intercalation-structured UV absorber has a formula as follow: [M2+1-xM3+x(OH)2](C16H16N3O4S)-x·mH2O, which has a absorbent ratio more than 90% to 280-370 nm UV light, remarkably increased thermal stability relative to that of the interlayer guest BZO, the obviously decomposing temperature of the interlayer matter of 450 . The UV absorber can be used for the anti-photoaging additive of the resins which are susceptible to light-oxygen degradation, such as polypropylene, polycarbonate, acrylonitrile-butadiene-styrene copolymer (ABS) and polyurethane.