Production method of high solid content melamine resin

A melamine resin and melamine technology are applied in the formulation of high solid content melamine resin and the field of preparation thereof, which can solve the problems of increasing the cost of environmental protection treatment, difficult to accurately control the end point, fluctuating resin solid content, etc., and reduce investment costs. , the effect of avoiding the concentration stage and reducing the production cost

Inactive Publication Date: 2007-01-31
濮阳绿寰宇化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When this method is adopted, aldehyde-containing wastewater is bound to be produced, causing environmental pollution or increasing the cost of environmental protection treatment; at the same time, it will also bring about a series of negative effects such as fluctuations in the solid content of the resin, and difficulty in accurately controlling the end point.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Melamine 1500; paraformaldehyde 735; liquid formaldehyde (37%) 1200; sodium metabisulfite 100; dicyandiamide 150; o-cresol 48; methanol 150.

[0021] A final product of melamine resin with a solid content of 76%; a viscosity of 150 Pa.S; a density of 1.26; and a pH of 9.2 was obtained.

Embodiment 2

[0023] Melamine 1500; paraformaldehyde 735; liquid formaldehyde (concentration 37%) 1200; sodium metabisulfite 75; benzomelamine 225; methanol 150.

[0024] A melamine resin final product with a solid content of 76%; a viscosity of 140 Pa.S; a density of 1.28; and a pH of 9.0 was obtained.

Embodiment 3

[0026] Melamine 1500; paraformaldehyde 735; liquid formaldehyde (37%) 1200; sodium metabisulfite 100; polyvinyl alcohol 20; methanol 150.

[0027] A melamine resin final product with a solid content of 76%; a viscosity of 120 Pa.S; a density of 1.24; and a pH of 9.4 was obtained.

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PUM

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Abstract

The present invention relates to a formula of high solid content melamine resin and its preparation method. Said melamine resin is made up by using melamine, liquid formaldehyde (industrial product concentration is 37%) or paraformaldehyde and blending material through a synthesis process. The described material can be one of urea, monohydroxy-melamine, dihydroxy-melamine, alkyl-substituted melamine, polyvinyl alcohol, ethyl alcohol, ethylene glycol, methyl alcohol and others or their mixture. Said resin cam be used for producing melamine foamed plastics.

Description

technical field [0001] The invention relates to a formula and a preparation method of a melamine resin with high solid content, and the resin is especially suitable for the production of melamine foamed plastics. Background technique [0002] As we all know, melamine resin (melamine resin) has been used for more than half a century in the production of what is called "melamine molding compound" that meets food hygiene requirements. Melamine resins and amino resins modified with melamine have been widely used in the production of coatings, wood adhesives, impregnated paper adhesives and other products. In addition, in fine chemicals such as paper wet strength agent, fabric stiffening agent, fluorescent whitening agent, waterproofing agent, concrete water reducing agent, color paste, seed, fertilizer, pigment, dye capsule and serialized flame retardant The production field of the product has also been widely used. [0003] Since the 1980s, the research work on developing new...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G12/38
Inventor 陈留拴王福田范国军周瑞庆杨杰袁立勇李继向蒋凡顺
Owner 濮阳绿寰宇化工有限公司
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