Modified melamine resin and production method thereof

A technology of melamine and a production method, which is applied in the field of modified melamine resin and its production, can solve problems such as inability to meet production needs, increase costs, production difficulties, etc., and achieve the effects of improving production efficiency, saving production costs, and prolonging storage period

Active Publication Date: 2010-06-02
SHENZHEN NEWCCESS IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The general storage period of the modified melamine resin produced by the prior art is only 2-7 days, which cannot meet the production needs of enterprises with a long storage period.
Although melamine is made into solid powder in the existing industry to prolong the storage period, because the formaldehyde solution contains more than 60% water (and a small amount of reaction-generated water), a large amount of moisture needs to ...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] serial number

[0038] serial number

Embodiment 2

[0041] In the formula of above-mentioned embodiment 1 and embodiment 2, when making, its reaction end point is as the criterion with control quality index and reaction time, (adding timing is as described above), due to the adding of the raw material of high fat chain, the shelf life of melamine resin is obtained With further extension, it can meet the needs of enterprises with long storage period (more than 8 days in winter and more than 15 days in summer).

[0042] Among them, the quality standard

[0043] 1. Appearance Colorless to light yellow transparent liquid

[0044] 2. Gel time 60±15 seconds (160±1℃, knife method)

[0045] 3. Solid content 42±8%

[0046] 4. Viscosity 15-18 seconds (4# viscosity cup)

[0047] In addition, the measuring method (knife method) of resin gelation time (gelation time) of the present invention is as follows:

[0048] The gelation time (gelation time) of the resin, also known as the molding time, refers to the time required for the ...

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PUM

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Abstract

The invention discloses a modified melamine resin and a production method thereof. The modified melamine resin comprises the following components in part by weight: 500 to 600 parts of formaldehyde, 5 to 9 parts of polyvinyl alcohol, 25 to 35 parts of methenamine, 70 to 80 parts of melamine, 180 to 250 parts of carbamide, 50 to 300 parts of methanol or ethanol, and 20 to 80 parts of polyethylene glycol or diethylene glycol. Due to the addition of raw materials of high aliphatic chain, the modified melamine resin and the production method thereof further prolong the storage life of the melamine resin, can meet the production requirements of enterprises on the long storage life, save production cost, improve working efficiency and save energy consumption.

Description

technical field [0001] The invention relates to the field of melamine resin production, in particular to a modified melamine resin and a production method thereof. Background technique [0002] Melamine resin is a kind of resin widely used in the decoration industry, etc. The raw materials are melamine (2,4,6-triamino-1,3,5-triazine) and 37% formaldehyde solution, and the molar ratio of formaldehyde to melamine is 1 : around 1.7, the first step generates different numbers of N-methylol substituents, and then further condenses into a linear resin. The reaction conditions are different, and the molecular weight of the product is different. It can be from water-soluble to insoluble in water, or even insoluble and infusible solid. The pH value has a great influence on the reaction rate. [0003] The cured melamine resin is colorless and transparent with good gloss. It is stable in boiling water and can even be used at 150°C. It has self-extinguishing properties, water resistan...

Claims

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Application Information

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IPC IPC(8): C08L61/30C08L71/08C08G12/38C08G12/46
Inventor 杨柳阙红雨
Owner SHENZHEN NEWCCESS IND
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