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Rare earth complex rubber aging inhibitor as well as preparation method and applications thereof

A technology of rubber antioxidant and rare earth complex, applied in the field of rubber auxiliaries, can solve problems such as poor aging resistance, and achieve the effects of stable properties, simple and feasible reaction, and not easy to decompose

Inactive Publication Date: 2015-01-14
TIANJIN YIHUA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the presence of carbon-carbon double bonds in its molecule, its aging resistance is poor. It is of great significance to study the anti-aging properties of styrene-butadiene small coke for its processing and use.

Method used

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  • Rare earth complex rubber aging inhibitor as well as preparation method and applications thereof
  • Rare earth complex rubber aging inhibitor as well as preparation method and applications thereof
  • Rare earth complex rubber aging inhibitor as well as preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Add 1 mol of samarium oxide into 500mL concentrated hydrochloric acid, stir and dissolve while adding, the reaction is exothermic, and a transparent light yellow rare earth chloride solution is obtained, and the excess concentrated hydrochloric acid and water are removed by heating to obtain a light yellow solid, which is dried at a constant temperature of 60 degrees for 12 hours. The product samarium chloride is obtained. Dissolve 1mol of N-isopropyl-N'-phenyl-p-phenylenediamine in 200mL of ethanol, 1mol of samarium chloride in 200mL of ethanol, then add the ethanol solution of samarium chloride dropwise to N-isopropyl-N' -In the ethanol solution of phenyl-p-phenylenediamine, put it into a 30-degree water bath to heat and react for 0.5 hours. After the reaction is completed, remove excess ethanol by rotary evaporation to obtain a thick liquid, which is put into a vacuum drying oven, Dry at 30 degrees to constant weight, then take it out, grind and sieve to obtain the r...

Embodiment 2

[0020] Add 1 mol of samarium oxide into 500mL concentrated hydrochloric acid, stir and dissolve while adding, the reaction is exothermic, and a transparent light yellow rare earth chloride solution is obtained, and the excess concentrated hydrochloric acid and water are removed by heating to obtain a light yellow solid, which is dried at a constant temperature of 60 degrees for 12 hours. The product samarium chloride is obtained. Dissolve 3 mol of N-isopropyl-N'-phenyl-p-phenylenediamine in 200 mL of ethanol, 1 moL of samarium chloride in 200 mL of ethanol, and then add the ethanol solution of samarium chloride dropwise to N-isopropyl-N'- In the ethanol solution of phenyl-p-phenylenediamine, put it into a 30-degree water bath to heat and react for 1 hour. After the reaction is completed, remove excess ethanol by rotary evaporation to obtain a thick liquid, which is put into a vacuum drying oven for 30 Dry to constant weight, then take out, grind and sieve to obtain the rare ea...

Embodiment 3

[0022] Add 1 mol of samarium oxide into 500mL concentrated hydrochloric acid, stir and dissolve while adding, the reaction is exothermic, and a transparent light yellow rare earth chloride solution is obtained, and the excess concentrated hydrochloric acid and water are removed by heating to obtain a light yellow solid, which is dried at a constant temperature of 60 degrees for 12 hours. The product samarium chloride is obtained. Dissolve 5 mol of N-isopropyl-N'-phenyl-p-phenylenediamine in 200 mL of ethanol, 1 moL of samarium chloride in 200 mL of ethanol, and then add the ethanol solution of samarium chloride dropwise to N-isopropyl-N'- In the ethanol solution of phenyl-p-phenylenediamine, put it into a 30-degree water bath to heat and react for 1 hour. After the reaction is completed, remove excess ethanol by rotary evaporation to obtain a thick liquid, which is put into a vacuum drying oven for 30 Dry to constant weight, then take out, grind and sieve to obtain the rare ea...

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Abstract

The invention provides a rare earth complex rubber aging inhibitor, which is prepared by complexing rare earth ions and N-aminodiphenylamine organic ligand. A preparation method comprises the following steps: (1) adding rare earth oxide into concentrated hydrochloric acid, stirring and dissolving, heating and removing excessive concentrated hydrochloric acid and water, and drying for 12 hours at constant temperature of 60 DEG C to obtain rare earth chloride; and (2) respectively dissolving the weighed ligand and rare earth chloride into an organic solvent according to the mole ratio of (1-5):1, then dropwise adding the dissolved rare earth chloride solution into corresponding ligand solution, reacting for 0.5-1 hour in 30-40DEG C water bath, removing excessive organic solvent after the reaction is completed, performing vacuum drying to constant weight, grinding and sieving to obtain a rare earth complex. The rare earth complex rubber aging inhibitor has the beneficial effects that rare earth is added to form a complex as an aging inhibitor, and the aging inhibition effect is superior to the aging inhibitor without addition of rare earth.

Description

technical field [0001] The invention relates to the field of rubber additives, in particular to a rare earth complex rubber antioxidant and its preparation and application. Background technique [0002] Styrene-butadiene rubber is the largest general-purpose synthetic rubber variety, and it is also one of the earliest rubbers to realize industrial production. Its physical structure performance, processing performance and product performance are close to natural rubber. It is widely used in tires, tapes, hoses and various rubber products. production area. However, due to the presence of carbon-carbon double bonds in its molecule, its aging resistance is poor. It is of great significance to study the aging resistance of styrene-butadiene small coke for its processing and use. Adding anti-aging agents to prevent or delay rubber aging is one of the most commonly used methods for rubber anti-aging. The study found that rare earth ions have excellent anti-oxidation ability, and ...

Claims

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Application Information

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IPC IPC(8): C08K5/00C07C209/00C07C211/65C08L7/00C08L9/06
Inventor 张维仁岳姝雅高强盛晨军
Owner TIANJIN YIHUA CHEM
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