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Compound ultraviolet light absorber and preparation method thereof
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A technology of ultraviolet rays and absorbers, which is applied in the field of compound ultraviolet absorbers and its preparation, can solve the problems of single ingredients and poor absorption effects, and achieve the effects of preventing oxidation, good ultraviolet absorbing effects, and preventing color light changes
Pending Publication Date: 2021-06-25
河南瑞奇特新材料有限公司
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[0004] Aiming at the deficiencies of the prior art, the present invention provides a compound type ultraviolet absorber and its preparation method, which has the advantages of simple manufacturing process, etc., and solves the technical problems of single component and poor absorption effect of ultraviolet absorbers on the market
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Embodiment a
[0045] Such as embodiment a, 52 parts of 2-(2'-hydroxy-3'-tert-butyl-5'-methylphenyl)-5-chlorobenzotriazole,
[0046] 21 parts 2,4-dihydroxybenzophenone,
[0047] 52 parts tetrakis[3-(3'5'-di-tert-butyl-4'-hydroxyphenyl)propionic acid]pentaerythritol,
[0053] Such as embodiment c, 60 parts of 2-(2'-hydroxy-3'-tert-butyl-5'-methylphenyl)-5-chlorobenzotriazole,
[0054] 30 parts of 2,4-dihydroxybenzophenone,
[0055] 60 parts tetrakis [3-(3'5'-di-tert-butyl-4'-hydroxyphenyl) propionic acid] pentaerythritol,
[0056] 40 parts of 2,6-di-tert-butyl-p-cresol.
[0057] The experimental data in a medium-to-high-intensity environment are as follows:
[0058]
[0059]
[0060]
[0061]
[0062]
[0063] Preferably, the composite ultraviolet absorber consists of 2-(2'-hydroxyl-3'-tert-butyl-5'-methylphenyl)-5-chlorobenzotriazole, phenyl o-hydroxybenzoate, 2-(2'-hydroxyl-5'-methylphenyl) benzotriazole, the composite antioxidant is composed of tetrakis [3-(3'5'-di-tert-butyl-4'-hydroxyphenyl) Propionic acid] pentaerythritol, copper dialkyl dithiophosphate, glucose oxidation alcohol form, the parts by weight of each raw material are:
[0064] 50-60 parts of 2-(2'-hydroxy-3'-tert-butyl-5'-methylphenyl)-5-chlorobenzotriaz...
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Abstract
The invention relates to the technical field of plastic additives, in particular to a compound ultravioletlight absorber and a preparation method thereof.The compound ultravioletlight absorber is formed by compounding 50-70% by weight of a compound ultravioletlight absorber and 30-50% by weight of a compound antioxidant, and the compound ultraviolet light absorber comprises two or more of phenyl o-hydroxybenzoate, 2- (2'-hydroxy-5'-methyl-phenyl) benzotriazole, 2, 4-dihydroxy benzophenone, 2 -(2'-hydroxy-3', 5' -dicyclopentadienyl ) benzotriazole and 2- (2'- hydroxy -3'- tert-butyl -5'- methylphenyl)- 5-chlorobenzotriazole, wherein the composite antioxidant comprises tetrakis [3 -(3' ,5' - di-tert-butyl -4'- hydroxyphenyl) propionic acid] pentaerythritol, glucose oxidealcohol, and comprises two or more of 2,6 di-tert-butyl p-cresol and copper dialkyl dithiophosphate.
Description
technical field [0001] The invention relates to the technical field of plastic additives, in particular to a composite ultraviolet absorber and a preparation method thereof. Background technique [0002] In the later stage of the plastic production process, it is very important to keep the color unchanged for a long time. Anti-yellowing is very important, so the production of plastic generally needs to add anti-ultraviolet absorbers. Plastic ultraviolet absorbers are a very important additive. It mainly absorbs ultraviolet rays to protect plastic role. The application principle of ultraviolet absorber is that it has the effect of absorbing ultraviolet light within a certain range. The strength of ultraviolet absorber generally depends on its ability to absorb ultraviolet band. The wavelength of general ultraviolet absorber is 200nm-400nm. It is very destructive to the surface of the plastic, so adding a UV absorber can just absorb the UV light. [0003] Traditional ultravi...
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