A kind of easy-processing anti-aging type nitrile rubber and preparation method thereof
A nitrile rubber, anti-aging technology, applied in the preparation of carboxylic acid nitrile, chemical instruments and methods, preparation of organic compounds, etc., can solve the problems of no anti-aging effect and easy precipitation
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Embodiment 1
[0039] Mix anti-scorch agent 2-vinylbenzoic acid and anti-aging agent 2-cyanopropenylphenol with a molar ratio of 1.0:5.0, prepare a solution with 30% mass concentration with hexane solvent, add anti-scorch agent and 0.1% olefin metathesis catalyst on the total substance amount of antiaging agent Isolate air and water, react at room temperature for 8 hours, and use a vacuum desolventizer to remove the solvent to prepare anti-scorch rubber antioxidant 1-1.
[0040] Dissolve 100 parts of nitrile rubber NBR3305 in chloroform solvent to prepare a 0.13% concentration solution, add 0.86 parts of olefin metathesis catalyst And 21.1 parts of anti-scorch rubber antioxidant 1-1, at 15.9 ℃ isolated from air and water, reacted for 0.53 hours, the reacted glue solution was extracted by solvent to obtain anti-aging plasticizer, and its Mn was measured to be 5300.
[0041] Mix 100 parts of nitrile rubber NBR3305 on an open mill at 78 ° C for 4 times, add 10 parts of the prepared anti-agin...
Embodiment 2
[0046] Mix anti-scorch agent 3-vinyl phthalic acid and anti-aging agent 2,4,6-triallyl phenol at a molar ratio of 1.0:0.1, prepare a solution with 1% mass concentration with hexane solvent, add to the solution Add 0.01% of the olefin metathesis catalyst accounting for the total amount of anti-scorch agent and anti-aging agent After isolating air and water and reacting at room temperature for 0.5 h, the solvent was removed by a vacuum desolventizer to obtain anti-scorch rubber antioxidant 2-1.
[0047] Dissolve 100 parts of nitrile rubber NBR3305 in acetone solvent to prepare a 10% concentration solution, add 09 parts of olefin metathesis catalyst And 48 parts of anti-scorch rubber antioxidant 2-1, separated from air and water at 49°C, and reacted for 4.6 hours. The reacted glue solution was removed by solvent to obtain an anti-aging plasticizer product, and its Mn was measured to be 3100.
[0048] Mix 100 parts of nitrile rubber NBR3305 and 14 parts of anti-aging plasticize...
Embodiment 3
[0054] Mix anti-scorch agent 3-vinyl phthalic acid and anti-aging agent 2,6-diallyl-p-cresol at a molar ratio of 1.0:4.0, prepare a solution with 10% mass concentration with hexane solvent, and add it to the solution Add 0.09% of the olefin metathesis catalyst accounting for the total amount of anti-scorch agent and anti-aging agent Isolate air and water, react at room temperature for 4.5 hours, and use a vacuum desolventizer to remove the solvent to obtain anti-scorch rubber antioxidant 3-1.
[0055] Dissolve 100 parts of nitrile rubber NBR2907 base rubber in chlorobenzene solvent to prepare a 2.53% concentration solution, add 0.63 parts of olefin metathesis catalyst And 25.6 parts of anti-scorch rubber anti-aging agent 3-1, at 25 ℃ isolated from air and water, react for 2.5 hours, the reacted glue solution is detached by solvent to obtain anti-aging plasticizer, and the measured Mn is 2500.
[0056] Mix 100 parts of nitrile rubber NBR2907 and 30 parts of the anti-aging pl...
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