News Details
In coating crosslinking agent
2017-3-15 18:03:59
In coating crosslinking agent,Is common to use the crosslinking agent, and can be divided into the addition polymerization and catalysis. The so-called addition polymerization type or open ring of epoxy group addition polymerization, crosslinking agent to attend to the 3 d mesh structure itself. The amount of the crosslinking agent, such as too little, the crosslinking product connection at the end of the reaction of epoxy group.
Therefore, for this kind of crosslinking agent, there is a suitable dosage. While type catalytic crosslinker by cation, or anion way make epoxy open-loop addition polymerization, in the end, the crosslinking agent does not attend to the mesh structure, so there is no such as the appropriate dosage of equivalent reaction; However, increase the dosage makes crosslinking speed.
In show in the type of crosslinking agent, dicyandiamide, adipic acid hydrazide such varieties, insoluble in epoxy resin at room temperature, and dissolved at high temperature after crosslinking reaction, thus presents a latent state. So, could be called latent type functional crosslinking agent.
Two cyanide diamine commonly known as dicyandiamide, sexual intercourse is applied very early latent agent, widely used in coatings, single packaging adhesive, plastic film, etc. Two cyanide diamine as white crystals, melting point of 207 ~ 209 ℃, low toxicity, but soluble in epoxy resin. Data reports available solvents made soluble in epoxy resin, the dicyandiamide but now or will crush after mixed with epoxy resin, dicyandiamide in triple roller mixing, heating or using extrusion machining. Usually do not add the mixture of the accelerator, for more than half one year.
Dicyandiamide English nickname N - Cyanoguanidine; Dicyanodiamide; Dicyandiamide (Cyanoguanidine); Dicyandiamide/DCDA; DCD. 1 - Cyanoguanidine; 2 - Cyanoguanidine; Cyanoguanidine
The crosslinking mechanism of dicyandiamide is more complex, in addition to the four active hydrogen reaction, cyano also has reactivity. In addition, dicyandiamide with type catalytic effect of crosslinking agent. For E - 51 epoxy resin, the dicyandiamide resin 11 g the theory of consumption per 100 g, and the actual amount of 4 ~ 10 g, especially for solid dosage of epoxy resin generally are less.
Dicyandiamide properties: white crystalline powder. Water solubility at 13 ℃ is 2.26%, larger solubility in hot water. When aqueous solution at 80 ℃ was gradually ammonia decomposition. Solubility in anhydrous ethanol, ethyl ether at 13 ℃, 1.26% and 0.01%, respectively. Soluble in liquid ammonia, insoluble in benzene and chloroform. Relative density (d254) 1.40. The melting temperature of 209.5 ℃. Low toxicity, median lethal dose (mice, through the mouth) > 4000 mg/kg.
Dicyandiamide colourless, odourless, crystal. Or character White monoclinic crystal or powder, water solubility at 13 ℃ is 2.26%, larger solubility in hot water. When aqueous solution at 80 ℃ was gradually decompose to produce ammonia, anhydrous ethanol solubility at 13 ℃ in 1.2%, soluble in liquid ammonia, insoluble in benzene and chloroform.
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
Adipic acid hydrazide aka and hydrazide, single product is white crystal, soluble in water, poisoning. Mainly used for crosslinking agent of epoxy powder coating and coating additives, metal attenuated agent and other polymer additives and water treatment agent. With bifunctional crosslinking reagent, dedicated to aldehyde, generated a relatively stable hydrazone links.
With sodium hyaluronate as protein drug carrier after crosslinking. And diacetone acrylamide in water emulsion and water soluble polymer crosslinked crosslinking role. Can also be used for indoor formaldehyde adsorbent materials and intermediates.
Adipic acid hydrazide English name: Hexanedioic acid, dihydrazide; Adipic dihydrazide; Adipic acid dihydrazide; Adipodihydrazide; Adipoyl Hydrazide. Hexanedioic acid dihydrazide
Mainly used for crosslinking agent of epoxy powder coating and coating additives, metal attenuated agent and other polymer additives and water treatment agent.
Adipic acid hydrazide double functional group compounds, with sodium hyaluronate as protein drug carrier after crosslinking. And diacetone acrylamide in water emulsion and water soluble polymer crosslinked after crosslinking role, such as coating, adhesive, fiber and plastic processing, hair gel, etc., also can be used as a crosslinking agent and coating epoxy powder coating additives, metal attenuated agent and other polymer additives and water treatment agent, indoor formaldehyde adsorbent materials and intermediates.
With bifunctional crosslinking reagent, dedicated to aldehyde, generated a relatively stable hydrazone links. Especially for connecting glycoprotein, such as antibodies.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Therefore, for this kind of crosslinking agent, there is a suitable dosage. While type catalytic crosslinker by cation, or anion way make epoxy open-loop addition polymerization, in the end, the crosslinking agent does not attend to the mesh structure, so there is no such as the appropriate dosage of equivalent reaction; However, increase the dosage makes crosslinking speed.
In show in the type of crosslinking agent, dicyandiamide, adipic acid hydrazide such varieties, insoluble in epoxy resin at room temperature, and dissolved at high temperature after crosslinking reaction, thus presents a latent state. So, could be called latent type functional crosslinking agent.
Two cyanide diamine commonly known as dicyandiamide, sexual intercourse is applied very early latent agent, widely used in coatings, single packaging adhesive, plastic film, etc. Two cyanide diamine as white crystals, melting point of 207 ~ 209 ℃, low toxicity, but soluble in epoxy resin. Data reports available solvents made soluble in epoxy resin, the dicyandiamide but now or will crush after mixed with epoxy resin, dicyandiamide in triple roller mixing, heating or using extrusion machining. Usually do not add the mixture of the accelerator, for more than half one year.
Dicyandiamide English nickname N - Cyanoguanidine; Dicyanodiamide; Dicyandiamide (Cyanoguanidine); Dicyandiamide/DCDA; DCD. 1 - Cyanoguanidine; 2 - Cyanoguanidine; Cyanoguanidine
The crosslinking mechanism of dicyandiamide is more complex, in addition to the four active hydrogen reaction, cyano also has reactivity. In addition, dicyandiamide with type catalytic effect of crosslinking agent. For E - 51 epoxy resin, the dicyandiamide resin 11 g the theory of consumption per 100 g, and the actual amount of 4 ~ 10 g, especially for solid dosage of epoxy resin generally are less.
Dicyandiamide properties: white crystalline powder. Water solubility at 13 ℃ is 2.26%, larger solubility in hot water. When aqueous solution at 80 ℃ was gradually ammonia decomposition. Solubility in anhydrous ethanol, ethyl ether at 13 ℃, 1.26% and 0.01%, respectively. Soluble in liquid ammonia, insoluble in benzene and chloroform. Relative density (d254) 1.40. The melting temperature of 209.5 ℃. Low toxicity, median lethal dose (mice, through the mouth) > 4000 mg/kg.
Dicyandiamide colourless, odourless, crystal. Or character White monoclinic crystal or powder, water solubility at 13 ℃ is 2.26%, larger solubility in hot water. When aqueous solution at 80 ℃ was gradually decompose to produce ammonia, anhydrous ethanol solubility at 13 ℃ in 1.2%, soluble in liquid ammonia, insoluble in benzene and chloroform.
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
Adipic acid hydrazide aka and hydrazide, single product is white crystal, soluble in water, poisoning. Mainly used for crosslinking agent of epoxy powder coating and coating additives, metal attenuated agent and other polymer additives and water treatment agent. With bifunctional crosslinking reagent, dedicated to aldehyde, generated a relatively stable hydrazone links.
With sodium hyaluronate as protein drug carrier after crosslinking. And diacetone acrylamide in water emulsion and water soluble polymer crosslinked crosslinking role. Can also be used for indoor formaldehyde adsorbent materials and intermediates.
Adipic acid hydrazide English name: Hexanedioic acid, dihydrazide; Adipic dihydrazide; Adipic acid dihydrazide; Adipodihydrazide; Adipoyl Hydrazide. Hexanedioic acid dihydrazide
Mainly used for crosslinking agent of epoxy powder coating and coating additives, metal attenuated agent and other polymer additives and water treatment agent.
Adipic acid hydrazide double functional group compounds, with sodium hyaluronate as protein drug carrier after crosslinking. And diacetone acrylamide in water emulsion and water soluble polymer crosslinked after crosslinking role, such as coating, adhesive, fiber and plastic processing, hair gel, etc., also can be used as a crosslinking agent and coating epoxy powder coating additives, metal attenuated agent and other polymer additives and water treatment agent, indoor formaldehyde adsorbent materials and intermediates.
With bifunctional crosslinking reagent, dedicated to aldehyde, generated a relatively stable hydrazone links. Especially for connecting glycoprotein, such as antibodies.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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