News Details
Coating with melamine crosslinking agent
2017-3-31 15:02:03
Coating with melamine crosslinking agent,Melamine (s ā n ju the qing an) (English: Melamine) (chemical formula: C3N3 group (NH2) 3), commonly known as Melamine, protein powder, IUPAC named "1,3,5 - triazine - 2 minus 2 - three amine", is a kind of organic nitrogen heterocyclic triazine compounds used as chemical raw materials. It is a white monoclinic crystal, almost tasteless, slightly soluble in water (3.1 g/L) at room temperature, soluble in methanol, formaldehyde, acetic acid, hot ethylene glycol, glycerin and pyridine, insoluble in acetone, ether, harmful to the body, not used for food processing or food additives.
Appearance and properties: white monoclinic crystal.
In the case of 345 ℃.
Melting point (℃) : > 300 (sublimation)
Relative density (water = 1) : 1.573316
Relative vapor density (air = 1) : 4.34
Saturated vapor pressure (kPa) : 6.66
The water solubility (20 ℃) : 0.33 g
Solubility: insoluble in water, soluble in hot water, slightly soluble in water, ethylene glycol, glycerin, (hot) ethanol, not soluble in ether, benzene, carbon tetrachloride.
Melamine chemical properties
Nonflammable, stability at room temperature. Aqueous solution
Weakly alkaline (pH = 8), and hydrochloric acid, sulfuric acid, nitric acid, acetic acid, oxalic acid and so on all can form melamine salt. Under the condition of neutral or slightly alkaline, and formaldehyde condensation and into various methylol melamine, but in a slightly acidic (pH 5.5 ~ 6.5) and hydroxyl methyl and the derivatives of polycondensation reaction resin product. Strong acid or alkali aqueous solution hydrolysis, amino gradually replaced by hydroxyl, Mr Into cyanuric acid amide, two further hydrolysis generation cyanuric acid amide, finally produce cyanuric acid.
The preparation methods of melamine
In methanol solvent by dicyandiamide, at 200 ℃ and ammonia reaction. This law needs to consumption per ton product dicyandiamide (98%) of 1180 kg, liquid ammonia 30 kg. Compared with the law, the urea method of low cost, more use. Of urea to ammonia as the carrier, silica gel as the catalyst, the reaction at 380-400 ℃ temperature boiling, first decompose generate cyanate, and to further generate melamine condensation.
Chinese name: Diethyl toluene diamine(DETDA)
Chinese alias: aryl, aryl diethyl - aryl - methyl-p-phenylenediamine
English name: Benzenediamine, ar, ar-diethyl-ar-methyl-English aliases:Diethyltoluenediamine; ar, ar-Diethyl-ar-methylbenzenediamine;Diethylmethylbenzenediamine;
CAS No. :68479-98-1
EINECS No. :270 -877-4
Molecular formula: C11H18N2
Molecular Weight: 178.28
Boiling point: 310 ℃
Refractive index: 1.581
Flash Point: > 140 ℃
Inchi: InChI = 1/C11H18N2/c1-4-8-6-7 (3) 10 (12) 11 (13) 9 (8) 5-2/h6H ,4-5,12-13H2 ,1-3H3 density : 1.022
Risk Codes: R10; R35
RIDADR: UN 3082
Safety instructions: S2; S26; S39; S61
Packing Group: III
Hazard Class: 6.1
Three polyamine gas generated after cooling to capture the crude products, and then through melting, removing impurities, recrystallization have to finished products. Urea production of melamine products consumption per ton urea is about 3800 kg, 500 kg of liquid ammonia.
Melamine formaldehyde condensation polymerization can be obtained with melamine resin, can be used in plastics and coating industry, also can make textile technology to fold, shrink proof treatment agent. The modified resin can be bright color, good durability, hardness metal coating.
It can also be used for decorative sheet strong, heat-resisting, moistureproof paper and grey leather tanning agent, synthesis of fireproof layer board adhesive, waterproofing agent, fixing agent and curing agent. By melamine and formaldehyde, butyl alcohol as raw materials of 582 melamine resin. Used as a solvent polyurethane coating flow ping agent, the effect is very high.
Make the main raw material of melamine formaldehyde resin, is used as the organic elemental analysis reagent, also used for the synthesis of organic and resin tanning agent of leather processing and filling agent. Formaldehyde condensation polymerization can be obtained with melamine resin, can be used in plastics and coating industry, also can make textile technology to fold, shrink proof treatment agent. The modified resin can be bright color, good durability, hardness metal coating.
And made of condensation polymerization of melamine formaldehyde resin is widely used in wood construction template in the manufacturing and processing. Can be used for the waterproof on the surface of the template and the adhesion of the wood core board, increase the number of repeated use of the template.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Appearance and properties: white monoclinic crystal.
In the case of 345 ℃.
Melting point (℃) : > 300 (sublimation)
Relative density (water = 1) : 1.573316
Relative vapor density (air = 1) : 4.34
Saturated vapor pressure (kPa) : 6.66
The water solubility (20 ℃) : 0.33 g
Solubility: insoluble in water, soluble in hot water, slightly soluble in water, ethylene glycol, glycerin, (hot) ethanol, not soluble in ether, benzene, carbon tetrachloride.
Melamine chemical properties
Nonflammable, stability at room temperature. Aqueous solution
Weakly alkaline (pH = 8), and hydrochloric acid, sulfuric acid, nitric acid, acetic acid, oxalic acid and so on all can form melamine salt. Under the condition of neutral or slightly alkaline, and formaldehyde condensation and into various methylol melamine, but in a slightly acidic (pH 5.5 ~ 6.5) and hydroxyl methyl and the derivatives of polycondensation reaction resin product. Strong acid or alkali aqueous solution hydrolysis, amino gradually replaced by hydroxyl, Mr Into cyanuric acid amide, two further hydrolysis generation cyanuric acid amide, finally produce cyanuric acid.
The preparation methods of melamine
In methanol solvent by dicyandiamide, at 200 ℃ and ammonia reaction. This law needs to consumption per ton product dicyandiamide (98%) of 1180 kg, liquid ammonia 30 kg. Compared with the law, the urea method of low cost, more use. Of urea to ammonia as the carrier, silica gel as the catalyst, the reaction at 380-400 ℃ temperature boiling, first decompose generate cyanate, and to further generate melamine condensation.
Chinese name: Diethyl toluene diamine(DETDA)
Chinese alias: aryl, aryl diethyl - aryl - methyl-p-phenylenediamine
English name: Benzenediamine, ar, ar-diethyl-ar-methyl-English aliases:Diethyltoluenediamine; ar, ar-Diethyl-ar-methylbenzenediamine;Diethylmethylbenzenediamine;
CAS No. :68479-98-1
EINECS No. :270 -877-4
Molecular formula: C11H18N2
Molecular Weight: 178.28
Boiling point: 310 ℃
Refractive index: 1.581
Flash Point: > 140 ℃
Inchi: InChI = 1/C11H18N2/c1-4-8-6-7 (3) 10 (12) 11 (13) 9 (8) 5-2/h6H ,4-5,12-13H2 ,1-3H3 density : 1.022
Risk Codes: R10; R35
RIDADR: UN 3082
Safety instructions: S2; S26; S39; S61
Packing Group: III
Hazard Class: 6.1
Three polyamine gas generated after cooling to capture the crude products, and then through melting, removing impurities, recrystallization have to finished products. Urea production of melamine products consumption per ton urea is about 3800 kg, 500 kg of liquid ammonia.
Melamine formaldehyde condensation polymerization can be obtained with melamine resin, can be used in plastics and coating industry, also can make textile technology to fold, shrink proof treatment agent. The modified resin can be bright color, good durability, hardness metal coating.
It can also be used for decorative sheet strong, heat-resisting, moistureproof paper and grey leather tanning agent, synthesis of fireproof layer board adhesive, waterproofing agent, fixing agent and curing agent. By melamine and formaldehyde, butyl alcohol as raw materials of 582 melamine resin. Used as a solvent polyurethane coating flow ping agent, the effect is very high.
Make the main raw material of melamine formaldehyde resin, is used as the organic elemental analysis reagent, also used for the synthesis of organic and resin tanning agent of leather processing and filling agent. Formaldehyde condensation polymerization can be obtained with melamine resin, can be used in plastics and coating industry, also can make textile technology to fold, shrink proof treatment agent. The modified resin can be bright color, good durability, hardness metal coating.
And made of condensation polymerization of melamine formaldehyde resin is widely used in wood construction template in the manufacturing and processing. Can be used for the waterproof on the surface of the template and the adhesion of the wood core board, increase the number of repeated use of the template.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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