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 can

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0017] Example 1

[0018] When the present invention, the raw material is composed of 40 parts by weight, 30 parts of formaldehyde, 30 parts of water, 3 parts of urea, 3 parts of melamine, 5 parts of polyvinyl alcohol, 4 sodium hydroxide, 3 sodium hydroxide, organic solvent 2 parts, 2 parts of stabilizer, 3 emulsifiers; the organic solvent is formic acid, the stabilizer is a phenylene phenol, and the emulsifier is a diblyyl hypoxy polyoxyethylene ether.

[0019] Preparation steps:

[0020] Step 1: Preparation of steam heating equipment, water-cooled equipment and reactor;

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

[0022] Step 3: Preparation of sodium hydroxide solution and formaldehyde dilution, the prepared formaldehyde dilution, is put into the reactor, adding an organic solvent, heating the reaction kettle to 50-60 ° C, while the mass concentration is 25-35% T...

Example Embodiment

[0035] Example 2

[0036] In particular, the feedstock is composed of 50 parts by weight, 50 parts of formaldehyde, 20 parts of water, 4 parts of melamine, 5 parts of polyvinyl alcohol, 5 sodium hydroxide, 3 organic solvents, and stable organic solvent. 2 parts of the agent, 3 emulsifiers; the organic solvent is acetic acid, the stabilizer is phenyl, the emulsifier is a double glycerol polypropylene glycol ether;

[0037] Preparation steps:

[0038] Step 1: Preparation of steam heating equipment, water-cooled equipment and reactor;

[0039] Step 2: Weighing formaldehyde, water, melamine, polyvinyl alcohol, hypochlorlic acid, sodium hydroxide, organic solvent, stabilizer, emulsifier;

[0040] Step 3: Preparation of sodium hydroxide solution and formaldehyde dilution, the prepared formaldehyde dilution, is put into the reactor, adding an organic solvent, heating the reaction kettle to 50-60 ° C, while the mass concentration is 25-35% The sodium hydroxide solution regulates the pH of...

Example Embodiment

[0044] Example 3

[0045] When the present invention, the feedstock is composed of weight parts, 60 parts of formaldehyde, 30 parts of water, 5 parts of melamine, 6 parts of polyvinyl alcohol, 7 sodium hypochlorlic, 4 parts of sodium hydroxide, 4 parts of the organic solvent, stable 4 parts of the agent, 5 emulsifiers; the organic solvent is ethanol, the stabilizer is a di-tert-butyl phenol, and the emulsifier is a double benzyl dimethylphenol polyoxyethylene ether.

[0046] Preparation steps:

[0047] Step 1: Preparation of steam heating equipment, water-cooled equipment and reactor;

[0048] Step 2: Weighing formaldehyde, water, melamine, polyvinyl alcohol, hypochlorlic acid, sodium hydroxide, organic solvent, stabilizer, emulsifier;

[0049] Step 3: Preparation of sodium hydroxide solution and formaldehyde dilution, the prepared formaldehyde dilution, is put into the reactor, adding an organic solvent, heating the reaction kettle to 50-60 ° C, while the mass concentration is 25-...

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PUM

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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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