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Utilize p-hydroxyphenylglycine to produce the method for solid waste residue to prepare epoxy resin

A technology for p-hydroxyphenylglycine and solid waste residues, applied in the fields of fine chemicals and polymer materials, can solve problems such as high cost and secondary pollution, achieve comprehensive utilization, reduce production costs, and solve problems in waste residue treatment.

Active Publication Date: 2020-07-17
内蒙古天宇达生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of incineration of solid waste residue produced by p-hydroxyphenylglycine is very high, and there is a risk of secondary pollution. Solid waste residue needs to be researched and developed for comprehensive utilization methods

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] In a 500mL four-necked bottle equipped with an electric stirring device, a thermometer and a constant pressure feeder, 16.7g of p-hydroxyphenylglycine production solid waste residue was sequentially added, and then 84g of industrial ethanol with a mass percentage concentration of 93% was added, and the solid was stirred and dispersed to form a suspension liquid, adjust the pH of the suspension to 7-8 with a 10% aqueous solution of sodium hydroxide. Heat the ethanol suspension of solid waste residue and reflux at 65-80°C for 1 hour to completely dissolve the solid waste residue and form an orange solution. Add 37.0 g of epichlorohydrin and 53.3 g of aqueous sodium hydroxide solution with a mass percent concentration of 30% to the reactor dropwise within 2 hours, maintain the reaction temperature at 65-80°C, and continue stirring at 85-90°C after the addition is complete. 0.5h. After the reaction is completed, vacuum distill at 65-80°C to recover the residual epichlorohy...

Embodiment 2

[0018] In a 500mL four-necked bottle equipped with an electric stirring device, a thermometer and a constant pressure feeder, 16.7g of p-hydroxyphenylglycine production solid waste residue was sequentially added, and then 50g of industrial ethanol with a concentration of 93% by mass was added, and stirred to disperse the solid to form a suspension liquid, adjust the pH of the suspension to 7-8 with a 10% aqueous solution of sodium hydroxide. Heat the ethanol suspension of solid waste residue and reflux at 65-80°C for 1 hour to completely dissolve the solid waste residue and form an orange solution. Add 27.8g of epichlorohydrin and 33.3g of aqueous sodium hydroxide solution with a mass percent concentration of 30% to the reactor dropwise within 2 hours, maintain the reaction temperature at 65-80°C, and continue stirring at 85-90°C after the addition is complete. 0.5h. After the reaction is completed, vacuum distill at 65-80°C to recover the residual epichlorohydrin and solvent...

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Abstract

The invention relates to a method for preparing epoxy resin from solid waste residues produced by hydroxyl phenylglycine glycine. The method comprises the following steps: dispersing solid waste residues which comprise 60%-70% of o-hydroxybenzoic glycine, 10%-20% of hydroxyl mandelic acid, 5%-10% of p-hydroxybenzoic glycine, 5%-10% of phenol, 3%-5% of aminosulfonic acid and 3%-5% of other components into an alcohol solvent; and separately adding epoxy chloropropane and a sodium hydroxide solution at a reflow temperature, and performing step-by-step polymerization reaction on a phenolic polyfunctional group compound and epoxy chloropropane in solid waste residues to generate hydroxyl phenylglycine epoxy resin. According to the method disclosed by the invention, epoxy resin is prepared fromsolid waste residues produced by hydroxyl phenylglycine glycine, so that the problem that waste residues in hydroxyl phenylglycine glycine production are difficult to treat is solved, and comprehensive utilization of waste is realized.

Description

technical field [0001] The invention relates to a method for preparing epoxy resin by using p-hydroxyphenylglycine to produce solid waste residue, and belongs to the fields of fine chemical industry and polymer materials. Background technique [0002] 4-Hydroxyphenylglycine (4-Hydroxyphenylglycine), the chemical name is α-amino p-hydroxyphenylacetic acid, and the molecular formula is C 9 h 9 NO 3 , molecular weight 167.2, appearance is white flaky crystal, melting point 204°C (decomposition), slightly soluble in ethanol and water, easily soluble in acid or alkali solution to form salt. p-Hydroxyphenylglycine is mainly used as a side chain compound of semi-synthetic penicillins and semi-synthetic cephalosporins, and is also used in the photosensitive field and as an analytical reagent for iron, phosphorus, silicon, etc. The main drugs produced by it are amoxicillin (amoxicillin), amoxicillin clavulanate, amoxicillin cephalosporin, amoxicillin cephalosporin, cefoperazone, c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G59/02
CPCC08G59/02
Inventor 刘炳光李建生王晨
Owner 内蒙古天宇达生物科技有限公司