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Preparation process of melamine modified resin adhesive

A technology of melamine and modified resin, which is applied in the field of preparation technology of melamine modified resin glue, which can solve the problems of unusable food processing or food additives, harmful to human body, etc., and achieve less sediment, less brittleness and good quality Effect

Inactive Publication Date: 2021-12-31
山东众远新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because it is harmful to the human body, it cannot be used in food processing or food additives

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] When the present invention is implemented, the raw material consists of the following parts by weight, 40 parts of formaldehyde, 30 parts of water, 20 parts of urea, 3 parts of melamine, 5 parts of polyvinyl alcohol, 4 parts of hypochlorous acid, 3 parts of sodium hydroxide, organic solvent 2 parts, 2 parts of stabilizer, 3 parts of emulsifier; the organic solvent is formic acid, the stabilizer is hydroquinone, and the emulsifier is diphenylethyl complex phenol polyoxyethylene ether;

[0019] Preparation steps:

[0020] Step 1: Prepare steam heating equipment, water cooling equipment and reactor;

[0021] Step 2: Weigh formaldehyde, water, urea, melamine, polyvinyl alcohol, hypochlorous acid, sodium hydroxide, organic solvent, stabilizer, emulsifier according to the proportion;

[0022] Step 3: Prepare sodium hydroxide solution and formaldehyde dilution, put the prepared formaldehyde dilution into the reaction kettle, add an organic solvent, heat the reaction kettle to...

Embodiment 2

[0036] When the present invention is implemented, the raw materials are composed of the following parts by weight, 50 parts of formaldehyde, 20 parts of water, 4 parts of melamine, 5 parts of polyvinyl alcohol, 5 parts of hypochlorous acid, 4 parts of sodium hydroxide, 3 parts of organic solvent, stable 2 parts of agent, 3 parts of emulsifier; organic solvent is acetic acid, stabilizer is p-benzoquinone, and emulsifier is diglycerol polypropylene glycol ether;

[0037] Preparation steps:

[0038] Step 1: Prepare steam heating equipment, water cooling equipment and reactor;

[0039] Step 2: Weigh formaldehyde, water, melamine, polyvinyl alcohol, hypochlorous acid, sodium hydroxide, organic solvents, stabilizers, and emulsifiers in proportion;

[0040] Step 3: Prepare sodium hydroxide solution and formaldehyde dilution, put the prepared formaldehyde dilution into the reaction kettle, add an organic solvent, heat the reaction kettle to 50-60°C, and add a mass concentration of 25...

Embodiment 3

[0045] When the present invention is implemented, the raw materials are composed of the following parts by weight, 60 parts of formaldehyde, 30 parts of water, 5 parts of melamine, 6 parts of polyvinyl alcohol, 7 parts of hypochlorous acid, 3 parts of sodium hydroxide, 4 parts of organic solvent, stable 4 parts of agent, 5 parts of emulsifier; organic solvent is ethanol, stabilizer is di-tert-butyl p-cresol, and emulsifier is bisbenzyldimethylphenol polyoxyethylene ether;

[0046] Preparation steps:

[0047] Step 1: Prepare steam heating equipment, water cooling equipment and reactor;

[0048] Step 2: Weigh formaldehyde, water, melamine, polyvinyl alcohol, hypochlorous acid, sodium hydroxide, organic solvents, stabilizers, and emulsifiers in proportion;

[0049] Step 3: Prepare sodium hydroxide solution and formaldehyde dilution, put the prepared formaldehyde dilution into the reaction kettle, add an organic solvent, heat the reaction kettle to 50-60°C, and add a mass concent...

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Abstract

The invention relates to a preparation process of a melamine modified resin adhesive, which is prepared from the following raw materials in parts by weight: 40-60 parts of formaldehyde, 20-30 parts of water, 20-30 parts of urea, 3-5 parts of melamine, 5-6 parts of polyvinyl alcohol, 3-8 parts of hypochlorous acid, 3-4 parts of sodium hydroxide, 2-4 parts of an organic solvent, 2-4 parts of a stabilizer and 3-5 parts of an emulsifier. Compared with the prior art, the preparation process has the following advantages: the added melamine can effectively reduce the brittleness of a resin adhesive finished product, so that the finished product prepared from the resin adhesive is more waterproof, not easy to age, longer in service life, better in durability and good in stability, and the emulsifier is added while the organic solvent is added, so that various raw materials can be well fused; it is ensured that the prepared melamine modified resin adhesive is good in quality, precipitates are few in the manufacturing process, and the material utilization rate is high.

Description

technical field [0001] The invention relates to the field of preparation of technical modified resin glue, in particular to a preparation process of melamine modified resin glue. Background technique [0002] Melamine, commonly known as melamine, protein essence, and melamine, is a triazine nitrogen-containing heterocyclic organic compound. It is non-flammable and stable at room temperature. The aqueous solution is weakly alkaline (pH value = 8), and can form melamine salt with hydrochloric acid, sulfuric acid, nitric acid, acetic acid, oxalic acid, etc. In neutral or slightly alkaline conditions, it condenses with formaldehyde to form various methylol melamines, but in slightly acidic (pH 5.5-6.5) polycondensation reaction with methylol derivatives to form resin products. When it is hydrolyzed by strong acid or strong alkali aqueous solution, the amine group is gradually replaced by hydroxyl group, firstly to generate ammeline, further hydrolyzed to generate ammeline, and ...

Claims

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Application Information

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IPC IPC(8): C08G12/38
CPCC08G12/38
Inventor 马冬青
Owner 山东众远新材料有限公司
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