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Production method of hexamethoxy methyl melamine resin

A technology of hexamethoxymethyl melamine and a production method, which is applied in the production field of hexamethoxymethyl melamine resin, can solve problems such as environmental pollution, damage to the health of operation and work, and achieve the effects of wide compatibility and good stability

Inactive Publication Date: 2007-10-03
ZHANGJIAGANG SHUNCHANG CHEM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the production process of general cyanamide resin, most of them will emit harmful gas, cause environmental pollution, and damage the health of the operator.

Method used

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  • Production method of hexamethoxy methyl melamine resin
  • Production method of hexamethoxy methyl melamine resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] As shown in Figure 1, add melamine and excess paraformaldehyde into the reaction kettle, the molar ratio of paraformaldehyde to melamine should be greater than 10, and under normal pressure, the temperature should be controlled at 30-35°C, and the moisture should be controlled at 5-15 %, by adding an appropriate amount of manganese dioxide catalyst for methylolation reaction, an intermediate product is generated; after 3 to 4 hours, the methylolation reaction is basically completed, and then excessive methanol is added, wherein methanol and the original The molar ratio of melamine should be greater than 8, and the temperature rises to 50-75°C. Also under the action of manganese dioxide catalyst, after about one hour, the etherification reaction is basically completed, and methanol-etherified melamine with high etherification degree is produced, namely: Hexa Oxymethylmelamine.

[0010] There is no three wastes generated in this process. Since a certain amount of formalde...

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Abstract

This invention discloses a compound used for dope cross-linking agent: six methoxyl group methyl melamine. It solves puzzle of no way to synthesize high substituted degree methanol etherification melamine. First melamine and over dose formaldehyde under catalysis of manganese peroxide carry out methylolation reaction, gain intermediate product; secondly intermediate product and methanol under catalysis of manganese peroxide carry out etherification reaction, obtain six methoxyl group methyl melamine; this compound is a monomeric compound with six degree of functionality, has low molecular weight, high etherification degree, needle crystal shape. its melting point is 55 deg, possess wonderful stability, comprehensive intermiscibility; And its formaldehyde content is very low, has no injury to flesh, and is a green product.

Description

technical field [0001] The invention relates to a production method of a compound used as a crosslinking agent, in particular to a production method of hexamethoxymethylmelamine resin. Background technique [0002] Cyanamide resin is a very important class of methanol etherified melamine formaldehyde resin, which developed rapidly during the 1960s. In the United States, this type of resin accounts for a large proportion of melamine resin. Since the mid-1980s in my country, melamine resin has entered a stage of comprehensive development. Among them, butanol-etherified melamine resin has been maturely applied in the coating industry, but methanol-etherified melamine-formaldehyde resin with a high degree of etherification is still in the development stage. Methanol etherified melamine formaldehyde resin with high etherification degree can be used in general industrial coatings such as automotive coatings, coil coatings, can coatings, home appliance coatings, wood coatings, ceme...

Claims

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Application Information

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IPC IPC(8): C07D251/00C08K5/3492
Inventor 陆建荣顾长春
Owner ZHANGJIAGANG SHUNCHANG CHEM
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