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Preparation method for natural rust remover

A rust remover, a natural technology, applied in the field of rust remover, can solve the problems of polluting the soil and the environment, easy to rust, affecting the health of users, equipment and the environment, etc., to achieve environmental pollution, no strong corrosion, good descaling The effect of the rust function

Inactive Publication Date: 2017-05-17
GUANGXI UNIV OF CHINESE MEDICINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Metals (including stainless steel) are prone to rust when placed outdoors or in the open air or during long-term use, which affects the appearance as well as the use
Traditional chemical rust removal usually uses strong acid, which affects the health of users and corrodes the surrounding equipment and environment; at the same time, a large amount of residue is produced, polluting the soil and the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The used saphophyllum sample is the whole herb of the saphophyllum plant, which is pulverized and extracted with 60% ethanol aqueous solution as a solvent, and the mass ratio of the saphophyllum to the solvent is 1:8, recover the solvent until it has no alcohol smell; the obtained alcohol-free solution is extracted with n-butanol, the volume ratio of the alcohol-free solution and n-butanol is 1:1, the extract is concentrated under reduced pressure to obtain a dry extract; The D101 type macroporous resin is eluted, washed with water until the eluent is colorless, then eluted with an ethanol solution with a volume concentration of 30%, and the eluent is collected and concentrated and dried to obtain the rust remover. It is mixed with water at a ratio of 5:1 by weight, and the obtained solution is applied to the rusted part of the stainless steel container, and after standing for 30 to 60 minutes, it is rinsed with clean water, and the rust is removed without rust marks.

Embodiment 2

[0019] After pulverizing the whole grass of the genus genus, extract the genus with a volume concentration of 60% methanol aqueous solution as a solvent, the mass ratio of the genus to the solvent is 1:8, recover the solvent until it has no alcohol smell, and obtain the total Extract. The obtained total extract is diluted with water to a concentration of 0.02-1g / ml, then extracted with n-butanol to obtain the corresponding extract, the extract is concentrated under reduced pressure, and the extracted dry paste is collected, which is the rust remover. Paste rust remover and water in a ratio of 3:1 by weight, the resulting solution is applied to the rusted part of the stainless steel container, after standing for 30 to 60 minutes, rinsed with clean water, the rust is removed without rust marks.

Embodiment 3

[0021] The used saphophyllum sample is the whole herb of the saphophyllum plant, which is pulverized and extracted with 60% ethanol aqueous solution as a solvent, and the mass ratio of the saphophyllum to the solvent is 1:8, recover the solvent until it has no alcohol smell; the obtained alcohol-free solution is extracted with n-butanol, the volume ratio of the alcohol-free solution and n-butanol is 1:1, the extract is concentrated under reduced pressure to obtain a dry extract; The D101 type macroporous resin is eluted, washed with water until the eluent is colorless, and then eluted with a 30% ethanol solution with a volume concentration, and the eluent is collected and concentrated to 1g / ml to obtain the rust remover. Apply the rust remover to the rusted part of the stainless steel container, let it stand for 30 to 60 minutes, then rinse it with clean water, the rust will be removed without rust marks.

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Abstract

The invention discloses a preparation method for a natural rust remover. The preparation method comprises the following steps: (1) taking a water-alcohol mixture for crushing hedyotis caudatifolia as a solvent for leaching, carrying out reduced pressure concentration on a leaching solution, and recovering the solvent until an alcohol smell disappears; (2) extracting the solution free from the alcohol smell, which is obtained in the step (1), by virtue of n-butyl alcohol to obtain a corresponding extracting solution, and carrying out reduced pressure concentration on the extracting solution to obtain a dry extract; and (3) washing the dry extract obtained in the step (2) through a macroporous resin until an eluting solution is colourless, then eluting by virtue of an ethyl alcohol solution with a volume concentration of 30%, collecting the eluting solution, and carrying out concentration and drying to obtain the rust remover. The natural rust remover prepared by the method disclosed by the invention is simple and convenient to prepare, safe and non-toxic, good in rust removal function for metal, and specially applicable to rust removal for kitchen utensils.

Description

technical field [0001] The invention belongs to the technical field of rust removers, in particular to a preparation method of natural rust removers. Background technique [0002] Sword-leaf eargrass (Hedyotis caudatifolia Merr.et Metcalf), is the whole herb of Rubiaceae eargrass plant Hedyotis caudatifolia Merr.et Metcalf, also known as juvenile red, long-tailed ear grass, millennium tea, postpartum tea, tuberculosis grass, is a Guangxi Folk herbal medicine has the functions of relieving cough and reducing phlegm, invigorating the spleen and eliminating accumulation, etc. Currently, the researches related to sword ear grass mainly include the study of microstructure, GC-MS analysis of volatile oil components and the protective effect of its extract on the liver. [0003] Metals (including stainless steel) are prone to rust when placed outdoors or in the open air or during long-term use, which not only affects the appearance, but also affects the use. Traditional chemical ...

Claims

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Application Information

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IPC IPC(8): C23G1/24
CPCC23G1/24
Inventor 罗彭潘为高阎莉
Owner GUANGXI UNIV OF CHINESE MEDICINE
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