Antioxidant composition as well as preparation method and application thereof
A technology of antioxidant and composition, applied in the field of antioxidant composition and its preparation, can solve the problems of sulfur bond breaking, affecting the use effect, odor, etc., to improve stability, avoid odor generation, and color stability high effect
Active Publication Date: 2021-02-26
广东众和高新科技股份公司
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Problems solved by technology
However, in the process of rubber or plastic preparation and processing, it often needs to be carried out at high temperature, and thioester antioxidants are used alone with long-acting antioxidants, and the sulfur bonds are prone to breakage in high temperature environments, thereby generating sulfur-containing low molecular weight. Components, produce obvious odor, affect its use effect
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[0039] An antioxidant composition, the specific components are as shown in Table 1, and the dosage unit of each component is "parts by weight".
[0040] Table 1
[0041]
[0042]
[0043] Its preparation method comprises the following steps:
[0044] (1) Pentaerythritol tetrakis (3-lauryl thiopropionate) and β-(3,5-di-tert-butyl-4-hydroxyl phenyl) octadecyl propionate in a rotating speed of 55r / min Mixed for 10min under conditions to obtain the first mixed material;
[0045] (2) mixing the first mixed material obtained in step (1) with tris(2,4-di-tert-butyl)phenyl phosphite for 5 minutes at a rotational speed of 50 r / min to obtain a second mixed material;
[0046] (3) Mix the second mixed material obtained in step (2) with n-hexadecyl 3,5-di-tert-butyl-4-hydroxybenzoate for 4 minutes at a speed of 55 r / min to obtain the antioxidant agent composition.
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The invention provides an antioxidant composition as well as a preparation method and application thereof. The antioxidant composition comprises the following components in parts by weight: 2-30 partsof a thioester antioxidant, 5-15 parts of an auxiliary antioxidant, 15-30 parts of a stabilizer and 40-60 parts of a main antioxidant. According to the antioxidant composition, by adding the auxiliary antioxidant, the stability of the thioester antioxidant in a high-temperature environment is improved, odor generated by bond breaking of sulfur bonds is avoided, and by adding the corresponding stabilizer, the yellowing effect generated by the thioester antioxidant in the high-temperature environment is reduced, and the prepared antioxidant composition is high in color stability and excellent in aging resistance, can effectively avoid odor generation when used at high temperature, and has a very important research value.
Description
technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to an antioxidant composition and its preparation method and application. Background technique [0002] Anti-oxidation performance is the key performance of many polymer materials. By adding antioxidants, the anti-oxidation performance of materials can be greatly improved, so as to achieve the effect of energy saving, environmental protection and prolonging the service life. With the continuous upgrading of polymer material products, the requirements for energy saving, environmental protection and life are also increasing. A single antioxidant can no longer meet the anti-oxidation performance requirements of the product. Therefore, it is necessary to use different antioxidants to produce synergistic effects to meet the requirements. . [0003] Antioxidants are generally divided into primary antioxidants and auxiliary antioxidants. Primary antioxidants mainl...
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IPC IPC(8): C08K5/372C08K5/526C08K5/134C08K5/00C08L21/00
CPCC08K5/372C08K5/526C08K5/1345C08K5/00C08K2201/014C08L2201/08C08L21/00Y02T10/86
Inventor 黎广贞王平舒畅刘君李林峰柏木兰郭新良
Owner 广东众和高新科技股份公司