KR20060037617A - A process for the preparation of melamine resins and its product - Google Patents

Abstract

The present invention relates to a method for producing melamine synthetic resin and a product using the same. The present melamine synthetic resin enables the compatibility of oil-soluble resins and water-soluble resins by alkylating the polar groups in the melamine (urea) molecules, thereby reducing the disadvantages of existing melamine resins. Is supplemented with other resins to enhance adhesion to minerals as fillers, and minerals such as jade, gannet, loess, amethyst powder, which are good for melamine-modified synthetic resins that complement hardness, flame-retardant and flame retardant, and this melamine-modified synthetic resins. By using a new material mixed with raw materials to produce a very excellent product such as adhesion, surface hardness, flame retardant, flame retardant, abrasion resistance, etc., not only can generate far-infrared rays that are particularly beneficial to the human body, but also molded products using the new material of the present invention. Recently used as building materials and interior decoration The social as to escape from the dangers of environmental hormones are generated damage occurred and the fire that posed a problem to produce a functional environmentally friendly products.

Melamine, urea, minerals, new materials

Description

A process for the preparation of melamine resins and its product             

1 is a method for producing melamine (urea) synthetic resin according to the present invention and a method for producing a new material using the same.

The present invention relates to a method for producing a melamine synthetic resin and a product using the same. It is well known that existing melamine synthetic resins have flame retardant properties due to the amino groups in the molecule because they use melamine or urea as the main raw materials.However, since the adhesive strength with the minerals is weak, only the pulp can be used as the filler and only the pulp can be used as the filler. Problems such as hardness, flame resistance, and flame resistance have been raised. However, when the melamine modified synthetic resin of the present technology is mixed with various minerals (jade, elvan, loess, amethyst, etc.), all the disadvantages of the existing resin products are supplemented and improved, and thus the adhesive strength, surface hardness, flame resistance, flame resistance, abrasion resistance, etc. In addition to producing a variety of new materials of very high quality, not only can the far-infrared rays which are beneficial to the human body be generated to the maximum, but also when the molding using the new material of the present invention is used as a building material and interior decoration in recent years, the social problem is raised. It is designed to escape the risk of hormonal development and fire.

Far-infrared rays are infrared rays that have a wavelength longer than visible light, which are not constant but often reach invisible rays of 5-25 microns, and because they have long wavelengths, they penetrate deeply into objects and easily vibrate molecules of the material themselves. There is a property such as to give a bio-ceramic container using this property is currently being developed.

Accordingly, an object of the present invention is to compensate for the disadvantages of existing resin products in the absence of any material that can replace various problems such as environmental hormone occurrence damage and fire occurrence of building materials and interior decoration that are currently socially problematic. By mixing various minerals (jade, ganban stone, loess, amethyst) with the improved melamine modified synthetic resin, it is possible to produce various new materials of very high quality, which can produce far-infrared rays that are beneficial to human beings as well as the molding materials using new materials. And it is used as interior decoration.

In order to achieve the above object, the melamine synthetic resin manufacturing method and a product using the same according to the present invention will be described in detail. First, its preparation method is 1) Melamine (urea) 25.00-30.00% by weight, Hormarin (36-40%) 50.00-55.00%, Triethanolamine 0.50-1.00%, Hexamine 0.10-0.15% , 0.05 ~ 0.15% by weight of antifoaming agent (10%), 15.00 ~ 20.00% by weight of methanol, add and mix, adjust pH to 10 ~ 11 with caustic soda (40%), and indirectly heat the temperature to 85 ± 5 ℃. First reaction step (D ₁ ) for alkylating the polar group in the melamine (urea) molecule by reacting for 1 hour,

2) Cooling process (D ₂ ) to cool the first reactant below 60 ℃, melamine (urea) 30.00 ~ 35.00 wt%, homarin (36-40%) 40.00 ~ to 20.00 ~ 25.00 wt% of the cooled primary reactant 45.00 wt%, triethanolamine 0.35-0.40 wt%, hexamine 0.10-0.15 wt%, formic acid 0.01-0.02 wt%, add and mix to adjust the pH to 8-9 and react at 90 ± 5 ℃ for 1 hour Secondary reaction process (D ₃ ),

3) Cooling process (D ₄ ) to cool the secondary reactants below 60 ° C., and 0.25 ~ 0.30% by weight of epichlorohydrin and 0.3 ~ 0.5% by weight of methyltrimethoxysilane in 80.00 ~ 90.00% by weight of the cooled secondary reactants. , 0.3-0.5 wt% of N- (β-aminomethyl) -γ-aminopropyltrimethoxysilane, 10.00-15.00 wt% of polyvinyl alcohol (10%), 1.5-2.0 wt% of epoxy resin (25%), water-soluble 0.1-0.2% by weight of silicon in the reactor consists of a third reaction step (D ₅ ) for 10 minutes to completely mix.

4) Mix the mineral suitable for the use of the molded product with the synthetic resin solution reacted as described above. Minerals (incombustibles) are irrelevant to product name and quality, but mainly one kind of mineral selected from jade, elvan, loess, and amethyst is pulverized to 250 mesh or more, 30.00 ~ 40.00 wt% of tertiary reaction process, 0.50 ~~ zinc stearate 1.50% by weight and 60.00 ~ 65.00% of minerals are mixed well with a sigmer wing reader, and then kneaded again with a colloid mill for about 1 hour (D ₆ ). Next, the wet impregnation mixed with melamine (urea) resin solution and minerals is transferred to a dryer. In this step, the mass production is performed in two kinds.

That is, a. Continuous tunnel air dryer or b. As it is done in a spray spray dryer, the dry matter should be uniformly dried in either way.

The drying temperature and drying time vary depending on the viscosity of the resin solution, the curing time, and the characteristics of the drying agent. Preferably, indirect heating uses 60 to 100 ° C. heating air for 1 to 1.5 hours. The reason why selection of drying conditions is important in this resin is that this drying is not only dehydration, but also modification and condensation reaction of the resin occur simultaneously. Therefore, it is important to control the denaturation, condensation and fluidity of resin by controlling drying temperature, drying time, humidity of circulating air. If the drying temperature is high or the drying time is long, the resin fluidity (flow) is significantly impaired. On the contrary, if the drying temperature is low or the time is short, the moisture content is high. Not only does the amount of gas generated increases, but the density of the molded product is poor and satisfactory quality as a required material cannot be obtained. After drying, the dried product is cooled with a cool air and kept at room temperature (D ₇ ). The cooled product is subjected to two stages of the mill (D ₈ ). In the first step, the heavy mill is pulverized with a hammer mill grinder, and then finely ground in a vibratory mill grinder. The second step is a ball mill, followed by mixing a proper amount of conventional dyes, pigments, mold releasing agents, and hardeners. Mix uniformly to make the particle size and volume ratio necessary for molding process. The inside of the ball mill grinder has a built-in magnetic brick to prevent contamination, and a jacket is made outside to keep cooling by passing the coolant. Therefore, by cooling the heat generated from friction and impact, the condensation reaction of the pulverized resin does not proceed and the fluidity is not reduced. Products that have been pulverized and mixed are sifted and packed to remove pulverized matter and foreign matters (D ₉ ).

The obtained melamine synthetic resin can be molded into a certain shape and commercialized into various products such as artificial gemstones, marble, tiles, flooring materials, wall materials, ceiling materials, roof tiles, air streams, electronic products and household goods.

More specifically, examples of the commercialized functional product using the present invention belong to the following.

( next )

(1) jewelry

    Jade jewelry

(2) Interior materials

    It burns and helps to cure diseases, and it is good for health and can produce freely form and color.

(3) stone materials

    a. Artificial marble b. Artificial stone

(4) tiles

    a. Built-in tiles b. Corner tiles c. Mural d. Floor tiles

(5) Others

    a. Sink set b. Washbasin c. Urinal d. Left toilet (for railway)

(6) roofing material

    a. Pressurized cement board tiles b. Metal and c. Projections and d. Korean food and

(7) Road safety goods

    a. Road signs b. Road safety signs

(8) molded products

    a. Artificial reef facilities b. Hardboard c. Subway wall d. Subway flooring

    e. Ceiling and flooring

(9) Synthetic Resin

    a. For jade jewelry and jewellery b. Jade bowl c. Resin for building materials

    d. General melamine resin e. Coating resin f. Transfer Paper Resin

    g. Resin for adhesives h. Ceramic substitute

Hereinafter, the present invention will be described in more detail with reference to the following examples, but the scope of the present invention is not limited to the following examples.

Example 1

Primary reaction (D ₁ )

a. Melamine (urea) 27.0 kg

b. Hormarin (36-40%) 54.0 kg

c. 0.5 kg triethanolamine

d. 0.1 kg of hexamine

e. Defoamer (10%) 0.1 kg

f. Methanol 17.3 kg

g. Caustic Soda (40%) 1.0 ㎏ T.C 100.0 ㎏

The prescription reagent is added to the reactor, mixed and reacted at 85 ° C. for 1 hour (pH = 10 ~ 11).

2. Secondary reaction (D ₃ )

After cooling the first reactant below 60 ℃

a. 1st reactant 23.0 kg

b. Melamine (urea) 33.0 kg

c. Hormarin (36-40%) 43.48 kg

d. 0.4 kg triethanolamine

e. 0.1 kg of hexamine

f. Formic acid 0.02 kg T.C 100.0 kg

Add and mix as prescribed and react for 1 hour (pH 8-9) at 90 ° C.

3. Third Reaction (D ₅ )

After cooling the secondary reactant below 60 ℃

a. 2nd reactant 85.0 kg

b. 0.3 kg of epichlorohydrin

c. 0.4 kg of methyltrimethoxysilane

d. 0.4 kg of N- (β-aminomethyl) -γ-aminopropyltrimethoxysilane

e. Polyvinyl alcohol (10%) 11.8 kg

f. Epoxy resin (25%) 2.0 kg

g. Water Soluble Silicone 0.1 kg T.C 100.0 kg

Mix thoroughly in the reactor for 10 minutes as prescribed.

4. Kneading process (D ₆ )

The mixed synthetic resin solution is mixed well with one kind of mineral selected from jade, elvan, loess, and amethyst suitable for use. Regardless of product name and quality, minerals (non-combustible substances) are pre-milled to 250 mesh or more, and the following prescription reagents are mixed well with a sigmer wing reader, and then kneaded with a colloid mill for about 1 hour.

a. 3rd reactant 35.0 kg

b. 1.0 kg of zinc stearate

c. Mineral (eg jade) 64.0 kg T.C 100.0 kg

Depending on the product, it is prepared by adding the same amount of elvan, loess or amethyst powder instead of jade.

5. Drying process (D ₇ )

In the drying process, the kneaded material kneaded well is dried by controlling the wind temperature, wind speed, and humidity by indirect heating using a continuous tunnel air dryer and a spray spray dryer.

6. Crushing process (D ₈ )

In the grinding process, the dried kneaded material is pulverized to a particle size of 250 to 300 mesh through a two-step process using a high-performance grinder.

7. Packing (D ₉ )

Products with homogeneous grinding and mixing should be sifted to remove pulverized matter and foreign matter.

    8. Molded product

The obtained melamine synthetic resin can be molded into a certain shape and commercialized into various products such as artificial gemstones, marble, tiles, flooring materials, wall materials, ceiling materials, roof tiles, air streams, electronic products and household goods.

Experimental Example

Experimental method and results of the new material (synthetic resin panel) prepared by the above process is as follows.

    1) Ceramics (Ceramics) Institute of Technology

Test analysis item: Far infrared ray emission amount (40 ℃)

Test analysis results: emissivity 91.8% (see Table 1)

Test Analysis Report

Issue Number: 2004-0213

Name of organization / Name: Jeongjin Chemical / Kim ○○

Address: 578-1 Yadang-ri, Gyoha-eup, Paju-si, Gyeonggi-do

Sample Name: Synthetic Resin Panel (Product of Example 1)

Test and Analysis Method: Instrumental Analysis (FT-IR)

Date of test and analysis: February 6, 2004 ~ February 12, 2004

Use: Quality Control

Table 1. Test and Analysis Results

Reference) The Ft-IR Spectrometer used in the analysis is a measurement result of Black Body using USA MIDAC M 2400-C.

    2) Korea Fire Protection Corporation

Test analysis items: flame retardant performance and flame retardant class 2

Result of test analysis: flame retardant and flame retardant grade 2 (see Table 2)

Request test report

Client: Jungjin Chemical-Kim ○○

Address: 578-1 Yadang-ri, Gyoha-eup, Paju-si, Gyeonggi-do

Sample Name: Synthetic Resin Pen (Product of Example 1)

Date and No.: 2004. 02. 06. No. 0400477

The test results for the sample you requested are as follows.

Table 2. Test Analysis Results

※ The test result was based on the standard of flame retardant performance (KOFEIS1001).

As can be seen from the above description, the adhesion, surface hardness, flame resistance, flame resistance, abrasion resistance, etc., by using the melamine-modified synthetic resin of the present invention using a new material mixed with various mineral raw materials such as jade, ganban stone, loess, amethyst powder, etc. In addition to producing a very excellent product, especially the far-infrared ray which is beneficial to the human body can be generated at the highest level (emissivity rate of 91.8%), the ionization and sterilization effect of the far-infrared ray when the molding using the new material of the present invention is used as a building material and interior decoration. It is possible to produce multi-functional eco-friendly products that can escape from the risk of environmental hormone generation and fire occurrence that are recently raised social issues.

Claims (2)

In the melamine synthetic resin manufacturing method, 1) Melamine (urea) 25.00 ~ 30.00%, Hormarin (36 ~ 40%) 50.00 ~ 55.00%, Triethanolamine 0.50 ~ 1.00%, Hexamine 0.10 ~ 0.15%, Defoamer (10%) 0.05 ~ 0.15% by weight and 15.00-20.00% by weight of methanol are added and mixed.Then, the pH is adjusted to 10-11 with caustic soda (40%), and the reaction is carried out for 1 hour while indirectly heating to 85 ± 5 ° C. ) The first reaction step (D ₁ ) to alkylate the polar group in the molecule, 2) Cooling process (D ₂ ) to cool the first reactant below 60 ℃, melamine (urea) 30.00 ~ 35.00 wt%, homarin (36-40%) 40.00 ~ to 20.00 ~ 25.00 wt% of the cooled primary reactant 45.00 wt%, triethanolamine 0.35-0.40 wt%, hexamine 0.10-0.15 wt%, formic acid 0.01-0.02 wt%, add and mix to adjust the pH to 8-9 and react at 90 ± 5 ℃ for 1 hour Secondary reaction process (D ₃ ), 3) Cooling process (D ₄ ) to cool the secondary reactants below 60 ° C., and 0.25 ~ 0.30% by weight of epichlorohydrin and 0.3 ~ 0.5% by weight of methyltrimethoxysilane in 80.00 ~ 90.00% by weight of the cooled secondary reactants. , 0.3-0.5 wt% of N- (β-aminomethyl) -γ-aminopropyltrimethoxysilane, 10.00-15.00 wt% of polyvinyl alcohol (10%), 1.5-2.0 wt% of epoxy resin (25%), water-soluble After performing a third reaction step (D ₅ ) of completely mixing 0.1 to 0.2% by weight of silicon in the reactor for 10 minutes, 4) Mix well one kind of mineral selected from jade, elvan, loess, and amethyst suitable for the use of molding product with synthetic resin solution reacted as above. Mineral (non-combustible material) is 250 mesh or more regardless of product name and quality. 30.00 ~ 40.00% by weight of the tertiary reaction process, 0.50 ~ 1.50% by weight of zinc stearate, and 60.00 ~ 65.00% by weight of minerals are mixed well with a sigmer wing reader, and then again with colloid mill for about 1 hour. Kneading step (D ₆ ), followed by the step (D ₇ ) of drying with a continuous tunnel-type air dryer or spray spray dryer (D ₇ ) and the step of grinding the dried product into 250-300 mesh using a grinder (D ₈ ). Method for producing a melamine synthetic resin, characterized in that. A synthetic synthetic resin panel manufactured by molding a melamine synthetic resin prepared according to claim 1 in a predetermined form.

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