Method for preparing liquid butadiene rubber anti-aging agent
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A rubber antioxidant and liquid cis-butadiene technology, applied in the field of composite antioxidants, can solve the problems of inconvenient use of antioxidants, uncontrollable cross-linking aging of cis-butadiene rubber, increase in gel content and Mooney viscosity, etc. Comprehensive anti-aging performance, good synergistic effect, and the effect of improving stability
Active Publication Date: 2013-09-18
嘉兴如运建筑科技有限公司
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Problems solved by technology
Its disadvantage is that the anti-aging performance is poor, especially the discoloration and inferior performance of phenolic antioxidants. In addition, it is inconvenient to use as a solid antioxidant
The disadvantage is that there is no thioether antioxidant in the formula, and the cross-linking and aging of butadiene rubber products cannot be controlled, so that the gel content and Mooney viscosity increase
The disadvantage is that there are no phosphite antioxidants and terminators in the formula, and the comprehensive anti-aging performance of butadiene rubber products is poor, especially the anti-discoloration ability is poor
Its disadvantage is that it is inconvenient to use as a solid antioxidant, and the discoloration and inferior
Method used
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Embodiment 1
[0041] Weigh 200 grams of 2,6-di-tert-butyl-4-methylene-S-acetate isooctylphenol, β-(4-hydroxy-3,5-di-tert-butylphenyl) propionate 125 grams of triol esters, 50 grams of bis(isotridecyl) pentaerythritol diphosphite, 20 grams of N,N-dibutyl hydroxylamine, 2 grams of 2,2,6,6-tetramethylpiperidinol, Add them respectively to the blending kettle, raise the temperature to 60-65°C, stir for 0.5h to mix evenly to form a liquid mixture, cool to room temperature 30-35°C, and obtain the 1# liquid anti-aging agent of the present invention.
Embodiment 2
[0043] Weigh 200 grams of 2,6-di-tert-butyl-4-methylene-S-acetate isooctylphenol, β-(4-hydroxy-3,5-di-tert-butylphenyl) propionate 110 grams of triol esters, 70 grams of bis(isotridecyl) pentaerythritol diphosphite, 10 grams of diethylhydroxylamine, 10 grams of 2,2,6,6-tetramethylpiperidinol, respectively added to the blending kettle , heat up to 60-65°C, stir for 0.5h and mix evenly to form a liquid mixture, cool to room temperature 30-35°C, and obtain 2# liquid anti-aging agent of the present invention.
Embodiment 3
[0045] Weigh 200 grams of 2,6-di-tert-butyl-4-methylene-S-acetate isooctylphenol, β-(4-hydroxy-3,5-di-tert-butylphenyl) propionate 80 grams of triol ester, 80 grams of bis(isotridecyl) pentaerythritol diphosphite, 25 grams of isopropyl hydroxylamine, and 15 grams of 2,2,6,6-tetramethylpiperidinol were added to the blending kettle , heat up to 60-65°C, stir for 0.5h and mix evenly to form a liquid mixture, cool to room temperature 30-35°C, and obtain 3# liquid anti-aging agent of the present invention.
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Abstract
The invention discloses a method for preparing a liquid butadiene rubber stabilizer, and belongs to the technical field of preparation of an anti-aging agent, and relates to a liquid phenolic antioxidant and a sulfur ethers antioxidant. The method comprises the steps of: preparing a liquid phenolic antioxidant and a sulfur ether antioxidant; compounding the liquid phenolic antioxidant and the sulfur ether antioxidant with a polymerization reaction terminator; adding to a blending kettle; agitating, heating and mixing to form a liquid mixture, and cooling to room temperature, so as to obtain the liquid butadiene rubber anti-aging agent. In the process of preparing the liquid anti-aging agent, the mass ratio of the sulfur ether antioxidant to the phenolic antioxidant is 1:(0.40-0.63); the mass ratio of the sulfur ether antioxidant to a phosphite antioxidant is 1:(0.25-0.40); the mass ratio of the sulfur ether antioxidant to the polymerization reaction terminator is 1:(0.10-0.20). By adopting the anti-aging system, the comprehensive anti-aging performance of the rubber product can be obviously improved.
Description
technical field [0001] The present invention is to prepare a liquid nickel-based butadiene rubber anti-aging agent, and relates to preparing a liquid phenolic antioxidant, which is compounded with other liquid-state substances to form a compound anti-aging agent with a liquid dosage form. It is used in butadiene rubber to solve dust pollution and use safety problems in the industrialization process, and has good anti-aging performance. Background technique [0002] 1,3-butadiene as raw material, C 6 Mixed aliphatic hydrocarbons are used as solvents, nickel naphthenate is used as the main catalyst, and triisobutylaluminum and boron trifluoride etherate complexes are used as co-catalysts. Anionic polymerization, after the polymerization reaction is completed, anti-aging agent is added, condensed, and dried to make nickel-based butadiene rubber (NiBR for short), NiBR is a diene-based stereoregular polymer, molecular formula: [0003] [0004] Due to the high degree of unsa...
Claims
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