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Melamino-formaldehyde resin adhesive and preparation method

A technology of melamine and formaldehyde resin, applied in the direction of adhesives, aldehyde/ketone condensation polymer adhesives, adhesive types, etc., can solve the problems of high free formaldehyde content, weak connection, short storage time, etc., and achieve storage time Long-lasting, less irritating, high-performance effects

Inactive Publication Date: 2012-06-13
TIANJIN ZHONGYUAN DECORATION MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. The content of free formaldehyde in the existing formula is relatively high, so the obtained melamine formaldehyde resin glue has a heavy smell. Although it can also pass the standard, it does not meet the E0 standard
[0005] 2. Due to the use of sorbitol in the existing formula, the obtained melamine formaldehyde resin glue has poor fluidity, weak connection and short storage time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0023] A kind of melamine formaldehyde resin glue, it is prepared by the component of following quality,

[0024] Formaldehyde 190KG,

[0025] Melamine 110.5KG,

[0026] Diethylene glycol 17KG,

[0027] Caprolactam 35KG,

[0028] 75KG of water.

[0029] First put water, formaldehyde, and melamine into the reaction kettle, start the agitator to stir, then add diethylene glycol, start to heat up until the temperature rises to 90±2°C, then add caprolactam and keep it warm for about 60 minutes; add formic acid to adjust the pH value Control at 7.8±0.2, when the measured water ratio reaches 1:2.7±0.2, start to cool down; when the temperature drops below 60°C, add a general-purpose external mold release agent and add an appropriate amount of NaOH to adjust the pH to 7.5, and when the temperature drops to 40°C ℃, start discharging.

no. 2 example

[0031] A kind of melamine formaldehyde resin glue, it is prepared by the component of following quality,

[0032] Formaldehyde 170KG,

[0033] Melamine 121KG,

[0034] Diethylene glycol 15KG,

[0035] Caprolactam 39KG,

[0036] Water 68KG.

[0037] Its specific manufacturing steps are the same as those of the first embodiment, and will not be repeated here.

[0038] Second embodiment:

[0039] A kind of melamine formaldehyde resin glue, it is prepared by the component of following quality,

[0040] Formaldehyde 170KG,

[0041] Melamine 121KG,

[0042] Diethylene glycol 15KG,

[0043] Caprolactam 39KG,

[0044] Water 68KG.

[0045] Its specific manufacturing steps are the same as those of the first embodiment, and will not be repeated here.

no. 3 example

[0047] A kind of melamine formaldehyde resin glue, it is prepared by the component of following quality,

[0048] Formaldehyde 210KG,

[0049] Melamine 99KG,

[0050] Diethylene glycol 19KG,

[0051] Caprolactam 31KG,

[0052] Water 83KG.

[0053] Its specific manufacturing steps are the same as those of the first embodiment, and will not be repeated here.

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PUM

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Abstract

The invention discloses a melamino-formaldehyde resin adhesive, which is prepared from the following raw materials in part by mass: 170 to 210 parts of formaldehyde, 99 to 121 parts of melamine, 15 to 19 parts of diethylene glycol, 31 to 39 parts of caprolactam and 68 to 83 parts of water. Simultaneously, the invention also discloses a preparation method for the melamino-formaldehyde resin adhesive. The melamino-formaldehyde resin adhesive prepared by the method is high in all performance, and particularly is high flowability, connectivity and the like. Simultaneously, due to the reduction of the using amount of the formaldehyde and the increase of the using amount of the water and the diethylene glycol, the prepared melamino-formaldehyde resin adhesive is small in irritation and smell and long in storage time, is a low-toxicity environment-friendly product, and meets the E0 level standard.

Description

technical field [0001] The invention relates to an E0 grade melamine formaldehyde resin glue and a preparation method thereof. Background technique [0002] Melamine-formaldehyde resin glue is the product of formaldehyde and melamine after methylolation and etherification. It has low viscosity, high cross-linking activity and excellent miscibility. The basic formula includes water, formaldehyde, melamine, diethylene glycol, caprolactam, sorbitol. [0003] Disadvantages of formaldehyde melamine glue produced by the original formula: [0004] 1. The content of free formaldehyde in the existing formula is relatively high, so the obtained melamine-formaldehyde resin glue has a heavy smell. Although it can also pass the standard, it does not meet the E0 standard. [0005] 2. Due to the use of sorbitol in the existing formula, the obtained melamine-formaldehyde resin glue has poor fluidity, weak connectivity and short storage time. Contents of the invention [0006] The techn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J161/32C08G12/42C08G12/32
Inventor 刘加晨
Owner TIANJIN ZHONGYUAN DECORATION MATERIALS
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