STUDY ON THE SYNERGISTIC EFFECT OF BISFUNCTIONAL HINDERED AMINE WITH UV-ABSORBERS

doi:10.7517/j.issn.1674-0475.1990.01.36

Abstract

Abstract: The synergistic effect of bisfunctional hindered amine Tinuvin-144 [2-(4’-hydroxyl-3’5’-bis-tert-butyl) benzyl-2-n-butyl malonate bis-penta-mnhyl piperidinyl] and UV-absorbers (UV-531, UV-327^*) have been examined by IR,UV-spectra,ESR,and TLC for the light stabilization of polypropylene (PP).The results show that the combination of Tinuvin-144 and UV-531 or UV-327 appears a synergistic effect,and Tinupin-144 and the UV absorbers can be protected each other against photolysis of them.In addition,the results also show that there are not chemical reaction accelerating loss of additives between hindered amine and absorbers within induction period.The mechanism of synergistic action has been proposed.

Key words: Hindered amine, UV-absorbers, Synergism, Photostability, Polypropylene

LIU ZHONG-WEN, PAN JIANG-QING, GUI MENG-YUAN. STUDY ON THE SYNERGISTIC EFFECT OF BISFUNCTIONAL HINDERED AMINE WITH UV-ABSORBERS[J]. Imaging Science and Photochemistry, 1990, 8(1): 36-40.

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STUDY ON THE SYNERGISTIC EFFECT OF BISFUNCTIONAL HINDERED AMINE WITH UV-ABSORBERS

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