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Process for separating polyhydroxy aldehyde without organic solvent environment

A polyhydroxy aldehyde and organic solvent technology, applied in chemical/physical/physical-chemical processes, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of large human injury, low ignition point, easy fire, etc., and achieve economical The effect of raw materials

Inactive Publication Date: 2019-04-05
WUHAN KESILI FIBER MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] We know that organic solvents have a strong pungent smell, are hallucinogenic to humans and animals, and are harmful to skin contact or inhalation, and some commonly used organic solvents such as ethanol, acetone, toluene, and propylene oxide have ignition points Very low, prone to fire
However, my country needs to use organic solvents to prepare many application products for polyhydroxy aldehydes, such as toothpaste, beverages, facial masks, and other additives such as sodium carboxymethyl cellulose and hydroxypropyl cellulose. During production, the discharge of sewage and the poisonous gas generated by the collection of organic solvents are hard to prevent, not only seriously polluting the environment, but also causing great harm to the human body, and greatly increasing the safety hazards of the factory.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The present invention proposes a technique for separating polyhydroxy aldehydes from an organic solvent-free environment, comprising the steps of:

[0019] S1, raw material selection, its raw material formula by weight is as follows: 1 part of oxalic acid, 3 parts of ethanol, 2 parts of clear water, 3 parts of sodium carboxymethyl cellulose, 0.5 part of catalyst;

[0020] S2, take a good amount of sodium carboxymethylcellulose and put it into a three-necked beaker and wait;

[0021] S3, mix oxalic acid and part of clear water in a beaker, pour into the three-necked beaker in S2, and start stirring;

[0022] S4, after the completion of S3, put the mixed solution in the beaker into the mixer to fully stir, and after stirring for 15 minutes, stop stirring;

[0023] S5. After the completion of S4, put the mixed and stirred materials into the experimental container, seal the experimental container, and store it in an environment with a temperature of 10 degrees Celsius;

...

Embodiment 2

[0029] The present invention proposes a technique for separating polyhydroxy aldehydes from an organic solvent-free environment, comprising the steps of:

[0030] S1, raw material selection, its raw material formula by weight is as follows: 1.5 parts of oxalic acid, 4 parts of ethanol, 2.5 parts of clear water, 3.5 parts of sodium carboxymethyl cellulose, 0.7 part of catalyst;

[0031] S2, take a good amount of sodium carboxymethylcellulose and put it into a three-necked beaker and wait;

[0032] S3, mix oxalic acid and part of clear water in a beaker, pour into the three-necked beaker in S2, and start stirring;

[0033] S4, after the completion of S3, put the mixed solution in the beaker into the mixer and fully stir, after stirring for 23 minutes, stop stirring;

[0034] S5. After the completion of S4, put the mixed and stirred materials into the experimental container, seal the experimental container, and store it in an environment with a temperature of 20 degrees Celsius;...

Embodiment 3

[0040] The present invention proposes a technique for separating polyhydroxy aldehydes from an organic solvent-free environment, comprising the steps of:

[0041] S1, raw material selection, its raw material formula by weight is as follows: 2 parts of oxalic acid, 5 parts of ethanol, 3 parts of clear water, 4 parts of sodium carboxymethyl cellulose, 0.9 part of catalyst;

[0042] S2, take a good amount of sodium carboxymethylcellulose and put it into a three-necked beaker and wait;

[0043] S3, mix oxalic acid and part of clear water in a beaker, pour into the three-necked beaker in S2, and start stirring;

[0044] S4, after the completion of S3, put the mixed solution in the beaker into the mixer for full stirring, after stirring for 30 minutes, stop stirring;

[0045] S5. After the completion of S4, put the mixed and stirred materials into the experimental container, seal the experimental container, and store it in an environment with a temperature of 30 degrees Celsius;

...

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PUM

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Abstract

The invention discloses a process for separating polyhydroxy aldehyde without an organic solvent environment. The process includes the following steps: selecting oxalic acid, ethanol, water, sodium carboxymethylcellulose and a catalyst as raw materials, and separating the polyhydroxy aldehyde after stirring, mixing, storing and cleaning. The process has the advantages that organic solvents can becompletely avoided, analytical acid is allowed to directly contact with materials containing hydrophilic groups, the replaced materials can be directly used for water cleaning, raw materials are savedin terms of cost, expensive organic solvent collecting machines are omitted, and the process is greatly contributive to the environmental protection.

Description

technical field [0001] The invention relates to the technical field of separation of polyhydroxy aldehydes, in particular to a process for separating polyhydroxy aldehydes in an environment without an organic solvent. Background technique [0002] We know that organic solvents have a strong pungent smell, are hallucinogenic to humans and animals, and are harmful to skin contact or inhalation, and some commonly used organic solvents such as ethanol, acetone, toluene, and propylene oxide have ignition points Very low, prone to fire. However, my country needs to use organic solvents to prepare many application products for polyhydroxy aldehydes, such as toothpaste, beverages, facial masks, and other additives such as sodium carboxymethyl cellulose and hydroxypropyl cellulose. During production, the discharge of sewage and the poisonous gas generated by the collection of organic solvents are hard to prevent, not only seriously polluting the environment, but also causing great ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/00
CPCB01J19/00
Inventor 余明思陈盈朱润栋王念贵
Owner WUHAN KESILI FIBER MFG CO LTD
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