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Preparation method of water-soluble high molecular weight growth agent

A high-molecular-weight, extender technology, applied in the fields of sulfonate preparation, organic chemistry, etc., can solve the problems of no disclosure of product production and preparation methods

Active Publication Date: 2012-07-25
江苏汉光实业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no disclosure about the production and preparation method of the product

Method used

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  • Preparation method of water-soluble high molecular weight growth agent
  • Preparation method of water-soluble high molecular weight growth agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 0.5 mole of methylbutenedioic acid (purity is 99.5%) joins in 500 grams of toluene together with 1.1 mole of 4-aminobenzenesulfonate sodium (purity 99%), and adds 3.2 grams of benzenesulfonic acid-based molecular sieve catalysts, Control the temperature of the reactor at 135°C to 140°C, keep reflux, and centrifuge the reaction solution (rotating speed 600r / min, time 5min) to remove the benzenesulfonic acid-based molecular sieve catalyst after observing that no more water is precipitated in the condensed toluene. Remove the toluene in the reaction solution of the benzenesulfonic acid-based molecular sieve catalyst by means of vacuum distillation (pressure-0.04MPa, temperature 110°C-115°C) with unreacted sodium 4-aminobenzenesulfonate and product 4,4' -Methyl butenediamide bis(sodium benzenesulfonate) separation, finally by recrystallization mode 4-aminobenzene sulfonate and product 4,4'-methyl butenediamide bis(benzenesulfonic acid Sodium 4-aminobenzenesulfonate in sodiu...

Embodiment 2

[0033] 0.5 mole of methylbutenedioic acid (purity 99.5%) joins in 500 grams of toluene together with 1.0 mole of 4-aminobenzenesulfonate sodium (purity 99%), and adds 3.2 grams of benzenesulfonic acid group molecular sieve catalysts, will The temperature of the reactor is controlled at 135°C to 140°C, and the reflux is maintained. When it is observed that no more water is precipitated in the condensed toluene, the reaction solution is centrifuged (rotating speed 600r / min, time 5min) to remove the benzenesulfonic acid-based molecular sieve catalyst. The toluene in the reaction solution of the benzenesulfonic acid-based molecular sieve catalyst is distilled under reduced pressure (pressure-0.04MPa, temperature 110°C-115°C) with unreacted sodium 4-aminobenzenesulfonate and product 4,4'-methyl 4-aminobenzenesulfonate and product 4,4'-methylbutenediamide bis(sodium benzenesulfonate) are finally separated by recrystallization The sodium 4-aminobenzenesulfonate in the mixture is remo...

Embodiment 3

[0035] 0.5 mole of methylbutenedioic acid (purity 99.5%) joins in 500 grams of toluene together with 1.3 mole of 4-aminobenzenesulfonate sodium (purity 99%), and adds 3.2 grams of benzenesulfonic acid group molecular sieve catalysts, will The temperature of the reactor is controlled at 135°C to 140°C, and the reflux is maintained. When it is observed that no more water is precipitated in the condensed toluene, the reaction solution is centrifuged (rotating speed 600r / min, time 5min) to remove the benzenesulfonic acid-based molecular sieve catalyst. The toluene in the reaction solution of the benzenesulfonic acid-based molecular sieve catalyst is distilled under reduced pressure (pressure-0.04MPa, temperature 110°C-115°C) with unreacted sodium 4-aminobenzenesulfonate and product 4,4'-methyl 4-aminobenzenesulfonate and product 4,4'-methylbutenediamide bis(sodium benzenesulfonate) are finally separated by recrystallization The sodium 4-aminobenzenesulfonate in the mixture is remo...

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Abstract

The invention belongs to the chemical industry, and relates to a preparation method of a water-soluble high molecular weight growth agent. The preparation method of the water-soluble high molecular weight growth agent uses methyl butenedioic acid and sodium 4-amino benzene sulfonate to react in a solvent to obtain a target compound shown as formula ( I ), and the reaction equation is as follows. The invention provides a new method for synthesizing 4,4'-methyl butenyl diamide bis(sodium benzene sulfonate) shown as formula ( I ), and the product with purity of more than 99% can be obtained and can be used as the water-soluble high molecular weight growth agent.

Description

technical field [0001] The invention belongs to the field of chemical industry and relates to a preparation method of a water-soluble high molecular weight growth agent. Background technique [0002] Water-soluble high molecular weight growth agent is a kind of organic compound with unsaturated group, biphenyl ring structure and sodium bisulfonate group, and its molecular structure has a branched space structure. Its structural characteristics make it have good water solubility, but also have certain salt resistance and large molecular space volume. Therefore, the water-soluble high-molecular-weight growth agent is an ideal monomer for the production of high-viscosity heat-resistant and salt-resistant soluble polymers in aqueous solution homopolymerization, and its role has become increasingly important in the industrial production of water-soluble polymers. . But there is no disclosure about the production and preparation method of this product at present. Contents of t...

Claims

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Application Information

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IPC IPC(8): C07C309/51C07C303/32
Inventor 顾法明
Owner 江苏汉光实业股份有限公司
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