Method for producing zinc acrylate at low temperature

A technology of zinc acrylate and acrylic acid, applied in chemical instruments and methods, carboxylate preparation, carboxylate preparation and other directions, can solve the problems of low efficiency, high energy consumption for washing and recycling, poor performance of finished products, etc., to achieve low emission, protection Effectiveness, low energy consumption

Pending Publication Date: 2022-01-28
青岛益林原科贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The method for preparing zinc acrylate in the prior art adopts the method of using a large amount of solvents, and its disadvantages are: using the solvent method, the energy consumption of washing and recovery is high, the efficiency is low, and there are residues in the finished product, resulting in poor performance of the finished product; Long time, there is the possibility and risk of self-polymerization of acrylic acid, etc.; compared with similar foreign products, there is a significant gap in performance and dosage

Method used

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  • Method for producing zinc acrylate at low temperature

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 800 to 1,000 kg of industrial grade acrylic acid, 100 to 250 kg of deionized water, mixed in the reactor and heated to 40 to 120 ° C, open the condensation reflux device, slowly add 400 to 550 kg of zinc oxide or basic zinc carbonate or hydrogen under stirring Zinc oxide or a mixture of two or three of the above substances, add 10 to 50 kg of hydrogen peroxide or acetic acid at the same time, and continue the reaction for 3 to 5 hours. When the material changes from a liquid-solid mixture to a mixture of solid powder and lumps, the reaction is over. , Dry the material, and when the moisture reaches the qualified requirements, the cooled material is pulverized to obtain zinc acrylate products.

Embodiment 2

[0044] 800 to 1000 kg of acrylic acid, 10 to 50 kg of acetic acid, 100 to 250 kg of deionized water, mixed in the reactor and heated to 40 to 120 ° C, open the condensation reflux device, slowly add 400 to 550 kg of zinc oxide or basic Zinc carbonate or zinc hydroxide or a mixture of two or three of the above substances, add 10 to 50 kg of hydrogen peroxide or deionized water at the same time, and continue to react for 3 to 5 hours. The material changes from a liquid-solid mixture to a solid powder and block. When the mixture is mixed, the reaction is over, the material is dried, and when the moisture reaches the qualified requirement, the cooled material is pulverized to obtain the zinc acrylate product.

Embodiment 3

[0046] 800 to 1000 kg of industrial grade acrylic acid, 10 to 20 kg of dilute hydrochloric acid, 100 to 250 kg of deionized water, mixed in the reactor and heated to 40 to 120 ° C, open the condensation reflux device, slowly add 400 to 550 kg of zinc oxide under stirring Or basic zinc carbonate or zinc hydroxide or a mixture of two to three of the above substances, add 10 to 50 kg of hydrogen peroxide or acetic acid at the same time, and continue the reaction for 3 to 5 hours. When the reaction is close to the end, add sodium hydroxide or potassium hydroxide or Ammonia solution neutralizes the residual acrylic acid. When the material changes from a liquid-solid mixture to a mixture of solid powder and lumps, the reaction is completed, and the material is dried. When the moisture reaches the qualified requirements, the cooled material is pulverized to obtain zinc acrylate products.

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Abstract

The invention discloses a method for producing zinc acrylate at low temperature. The method for producing zinc acrylate at low temperature comprises the following steps: preparing a first reactant solution, setting a reaction environment, adding a second reactant, controlling reaction and obtaining a zinc acrylate product. Through verification of a series of synthesis experiment researches and a large number of product application experiments, a more reasonable process and proper raw materials are optimized and screened out. A cheap and effective reaction raw material concentration adjusting medium is selected, the reaction speed is adjusted, the double-bond self-polymerization degree is controlled within the range of not influencing the use performance of the product, and the process performance requirements of good dispersion and fluidity of the materials in the reaction process are guaranteed. A condensation reflux reaction with a zinc compound is conducted at the low temperature, such that the application effectiveness of the zinc acrylate molecular structure is effectively protected, and the process requirements of low energy consumption and low emission can be met; and after the reaction is finished, drying and crushing to prepare a zinc acrylate product meeting performance requirements.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a method for producing zinc acrylate at low temperature. Background technique [0002] Zinc acrylate, a white powder with a slightly acidic odor, its molecular formula is C 6 h 6 o 4 Zn; molecular weight is 207.49. [0003] The main uses and mechanism of action of zinc acrylate are as follows: [0004] 1) It is used as a crosslinking agent and heat-resistant additive for rubber and artificial marble. It has the properties of acid and alkali resistance, oil resistance, corrosion resistance and high temperature resistance. It can be used as a peroxide bridging agent to increase crosslinking density and vulcanization speed. Shorten vulcanization time. Adjacent chains can be cross-linked. The physical properties after crosslinking, such as elasticity and tensile strength, depend on the crosslink density per unit chain length and the number of zinc ions. Combining with rubbe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C51/41C07C57/04
CPCC07C51/412C07C57/04
Inventor 蒋涛赵婕蒋经华
Owner 青岛益林原科贸有限公司
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