27676-62-6Relevant articles and documents
Method of synthesizing hindered phenolic antioxidant 3114 with one-step high pressure method
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Paragraph 0020; 0021; 0028; 0029, (2018/11/22)
The invention relates to a method of synthesizing a hindered phenolic antioxidant 3114 with a one-step high pressure method. The method is characterized by comprising the following steps of under protection of nitrogen, by taking 2,6-di-tert-butylphenol, paraformaldehyde and isocyanuric acid as raw materials and methanol as a reaction solvent, under the effect of a catalyst, controlling a reactionsystem to perform reaction for 2h at high pressure and 110-120 DEG C, rising the temperature to 130-140 DEG C, performing reaction for 4h to obtain a crude product, and performing filtering, recrystallization, washing and drying to obtain an object product. The method provided by the invention is of high-pressure reaction and one-step synthesis and is less in equipment investment, single in raw material and simple to operate; and the purity of a product can reach 99 percent or above, the yield is high, and less three wastes are produced.
2-(2′-hydroxyphenyl)benzotriazoles used as U.V. stabilizers
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, (2008/06/13)
2-(2′-hydroxyphenyl)benzotriazoles having general formula (I). The above 2-(2′-hydroxyphenyl)benzotriazoles are useful as light stabilizers for organic polymers.
Mixture of substances containing compounds with vinyl groups and stabilizers
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, (2008/06/13)
A mixture contains one or more vinyl-containing compounds as component (A) and, as a further component, a stabilizer (B) which contains one or more readily volatile nitroxyl compounds as component (b1), one or more sparingly volatile nitroxyl compounds as component (b2), if required one or more aromatic nitro compounds as component (b3) and, if required, one or more iron compounds as component (b4).Stabilizers (B) contain the components (b1) and (b2), (b1) and (b2) and (b3), (b1) and (b2) and (b4), and (b1), (b2), (b3) and (b4), and the premature polymerization of vinyl-containing compounds during their purification or distillation is inhibited by a process in which a stabilizer (B) is added or the components of stabilizer (B) are added as individual substances or in at least two groups of the components.