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Formula and preparation method of resin for primary impregnation

A formulation and resin technology, applied in the direction of paper, textiles and papermaking, non-fiber pulp addition, etc., can solve the problems of poor clarity and poor clarity, achieve improved clarity, increased wear-resistant revolutions, and broaden the scope of application Effect

Active Publication Date: 2014-07-09
SUZHOU JIANCHENG DECORATION MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the impregnated papers on the market only focus on wear-resisting and other indicators, but do not do well in terms of clarity, especially for high-weight (above 46g) wear-resistant papers and dark decorative papers, which generally have clarity after pressing. bad question
In recent years, as the market's requirements for the appearance of laminate flooring have become more and more diverse, and the quality requirements have become more and more stringent, impregnation production can no longer meet the current market requirements only by experience, old standards, and old processes, so further It is imperative to research and develop the production process of high-definition wear-resistant impregnated paper

Method used

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  • Formula and preparation method of resin for primary impregnation
  • Formula and preparation method of resin for primary impregnation

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Embodiment 1

[0025] A kind of formula of impregnation resin, described formula is

[0026] 34% formaldehyde 1000Kg

[0027] Diethylene glycol 25Kg

[0028] Melamine 110Kg

[0029] Urea 320Kg

[0030] Caprolactam 20Kg

[0031] 45% sodium hydroxide 3L

[0032] A preparation method of resin for primary impregnation, comprising the following steps:

[0033] (1) Add 1000Kg of 34% formaldehyde to the reaction kettle, adjust the pH value to 8.5 with 45% sodium hydroxide, and heat to 30°C;

[0034] (2) Add 25Kg of diethylene glycol and stir at the above temperature for 10 minutes;

[0035] (3) Add 110Kg of melamine and start to raise the temperature to 65°C to dissolve all the melamine;

[0036] (4) Add 320Kg of urea and stop heating at the same time. When the temperature naturally rises to 85°C, use 45% sodium hydroxide to control the pH value at 6.2;

[0037] (5) Add 20Kg of caprolactam after 10 minutes of reaction;

[0038] (6) After the fog point appears for the first time, the reacti...

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PUM

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Abstract

The invention discloses a formula for a resin for primary impregnation. The formula comprises 1000-1200Kg of 34%-37% formaldehyde, 25-55Kg of diethylene glycol, 110-140Kg of melamine, 320-360Kg of urea, 20-40Kg of caprolactam and 3-6L of 45%-55% sodium hydroxide. A preparation method of the resin for primary impregnation comprises the following steps: (1) adding formaldehyde, regulating the PH value by using the sodium hydroxide, and heating; (2) adding the diethylene glycol and stirring; (3) adding the melamine, and starting heating so that the melamine is completely dissolved; (4) adding the urea, and regulating the PH value by using the sodium hydroxide at a natural temperature; (5) adding the caprolactam; (6) continuing reacting until the water-to-resin ratio is appropriate after a cloud point appears for the first time, regulating the PH value by using the sodium hydroxide, and cooling, thereby finishing the preparation; the formula and preparation method of the resin for the primary impregnation have the beneficial effect that the obtained resin for the primary impregnation is applied to a production process of highly clear wear-resistant impregnated paper.

Description

technical field [0001] The invention relates to a formulation of a resin for primary impregnation and a preparation method thereof, in particular to a formulation of a resin for primary impregnation in a production process of high-definition wear-resistant impregnated paper and a preparation method thereof. Background technique [0002] The advantages of laminate flooring are wear resistance: about 10 to 30 times that of ordinary lacquered floors; aesthetics: various wood grains, patterns and colors can be simulated by computer; Anisotropy and expansion and contraction characteristics, extremely stable size, especially suitable for rooms with floor heating systems. The export volume of domestic laminated flooring has been increasing year by year, which has made the domestic market significantly higher than the output of the international market, and the development speed is rapid. This provides a good opportunity for the development of the melamine impregnated paper industry...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G12/40D21H17/51
Inventor 夏纪文
Owner SUZHOU JIANCHENG DECORATION MATERIAL