Preparation device and preparation method of rubber antioxidant TMQ

A technology of rubber anti-aging agent and preparation equipment, applied in the direction of organic chemistry, etc., can solve the problems of product application expansion, hindering market application, and long synthesis route of high-content anti-aging agent TMQ

Active Publication Date: 2022-07-22
KEMAI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, although the product index and application performance of high-content anti-aging agent products have been significantly improved, it is undeniable that the content of its non-effective components is still above 15%, which limits the application of this type of product to a certain extent further expansion of
In addition, due to the long synthesis route of the high-content anti-aging agent TMQ and many distillation and separation steps, its production cost is higher than that of the first-generation anti-aging agent products, which further hinders the market application of this type of product

Method used

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  • Preparation device and preparation method of rubber antioxidant TMQ
  • Preparation device and preparation method of rubber antioxidant TMQ
  • Preparation device and preparation method of rubber antioxidant TMQ

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0043] figure 1 A preparation device of a rubber antioxidant TMQ is shown, comprising an acetone preheater 1, an acetone polymerization tower 2, a semi-finished product synthesis tower 3, a semi-finished product receiving kettle 4 and a reaction kettle 5 connected in sequence;

[0044] The semi-finished product synthesis tower is provided with an aniline feed port; the acetone polymerization tower is provided with a basic resin, and the semi-finished product synthesis tower is provided with an acidic resin; the acetone preheater, the acetone polymerization tower, The semi-finished product synthesis tower, the semi-finished product receiving kettle, and the reaction kettle are all provided with heaters.

Embodiment 1

[0045] Embodiment 1: a method for preparing rubber antioxidant TMQ using the described preparation device of rubber antioxidant TMQ, comprising the following steps: (1) adding 8% KF / NaY resin catalyst to the acetone polymerization tower, and adding 8% KF / NaY resin catalyst to the semi-finished product. Xi'an Lanxiao LXC-105 high temperature resistant and strong acid cation exchange resin was added into the synthesis tower, and the mass ratio of the two catalysts was controlled to be 0.29:1; the heating medium of the acetone vaporizer was turned on and the temperature was raised to 70°C, and the heater of the acetone polymerization tower was turned on and the temperature was raised. to 80°C, turn on the semi-finished synthesis tower heater and raise the temperature to 120°C.

[0046] (2) First inject 50% volume of aniline into the semi-finished product receiving kettle, turn on the circulating pump and the semi-finished product receiving kettle heater, preheat the aniline to 100...

Embodiment 2

[0052] Example 2: Compared with Example 1, only the acetone polymerization tower is not filled with catalyst, and other conditions remain unchanged. In the reaction process, since there is no catalyst to catalyze the selective polymerization of acetone, acetone basically does not react during the heating process, and various reactions occur with aniline under the action of an acidic catalyst, resulting in many by-products and a low effective content of the final product.

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Abstract

The invention belongs to the field of anti-aging agents, and particularly relates to a preparation device and a preparation method of a rubber anti-aging agent TMQ. The preparation device comprises an acetone preheater, an acetone polymerization tower, a semi-finished product synthesis tower, a semi-finished product receiving kettle and a reaction kettle which are sequentially connected, the semi-finished product synthesis tower is provided with an aniline feeding hole; alkaline resin is arranged in the acetone polymerization tower, and acidic resin is arranged in the semi-finished product synthesis tower; the acetone preheater, the acetone polymerization tower, the semi-finished product synthesis tower, the semi-finished product receiving kettle and the reaction kettle are all provided with heaters. The catalyst for controlling acetone polymerization and corresponding control steps are developed for the first time, the acetone polymerization is controlled in a dimer-based range, and then under the action of a second catalyst, the acetone and aniline are subjected to a polymerization reaction to generate a TMQ monomer.

Description

technical field [0001] The invention belongs to the field of antioxidants, and in particular relates to a preparation device of a rubber antioxidant TMQ and a preparation method thereof. Background technique [0002] Rubber antioxidant TMQ is a ketone amine antioxidant, which is very effective in the protection of thermal oxidative aging, and also has a strong inhibitory effect on the catalytic oxidation of metals. It has low toxicity and is widely used in neoprene, styrene-butadiene rubber, butadiene Rubber, isoprene rubber and other synthetic rubber and natural rubber products. Because of its light yellow color, it can also be used in sanitary rubber products. [0003] Anti-aging agent TMQ is suitable for almost all types of elastomers in a variety of applications, with a wide temperature range. The persistence in rubber gives the rubber compound long-term resistance to thermal aging. It can prevent the compound from being catalytically oxidized by heavy metals. High m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D215/06
CPCC07D215/06
Inventor 孟庆森孙风娟赵玉军孔令鑫秦医通
Owner KEMAI CHEM
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