News Details
Study on crosslinking agent for epoxy coatings
2017-8-30 12:07:11
Study on crosslinking agent for epoxy coatings
Crosslinking agent of epoxy coating, made great achievements, since carried out by the earliest after part into a modified aliphatic amine salt water soluble crosslinking agent to later do not need to use organic acid salt of water-based epoxy crosslinking agent.
Epoxy coating cross-linking agent in the study, through part into a modified aliphatic amine salt water soluble crosslinking agent is by adding organic acid salt to reduce the reaction activity and increase the water solubility, stability, excess acetic acid on corrosion of steel have certain effect, so should not be used in steel structures.
To solve the problem of waterborne epoxy coatings corrosion resistance, the crosslinking agent of epoxy coating research and development of some new crosslinking agent, the crosslinking agent does not need to use more organic acid salt, mainly through the introduction of polyoxyethylene chains, make its dispersed in water, often using hydrophilic chain segments are: polyethylene glycol (peg) and polyoxyethylene amine, polyoxyethylene glycol diglycidyl ether, etc., at the same time use section of the main chain containing polyoxyethylene chain to reduce the crosslinking density.
Fatty amine, refers to the length of carbon chain within the scope of the C8 C22 - the major types of organic amine compound, it is the same as general amine, primary amine, secondary amine and tertiary amine and polyamine four categories, and the primary, secondary, tertiary amine depends on the number of hydrogen atoms are replaced by alkyl of ammonia.
Aliphatic amine is ammonia organic derivatives, C8-10 short chain fatty amine has certain solubility in water, long chain aliphatic amine generally insoluble in water, room temperature is liquid or solid, is alkaline, as an organic alkali of the skin and mucous membranes with a stimulus and corrode action.
Fatty alcohol is synthesized from raw materials. It is mainly composed of fatty alcohol and dimethylamine reaction to produce monoalkyl dimethylamine, fatty alcohol and an amine reaction to produce a dialkyl monomethyl tertiary amine, fatty alcohol and ammonia reaction to produce trialkyl amine.
Fatty acids are synthesized from raw materials. First fatty acid and ammonia reaction to generate nitrile, fat fat fat hydrogenation generate nitrile primary amine or secondary amine, primary amine or secondary amine im hydrogenation of methyl tertiary amine, primary amine by nitrile ethylation after hydrogenation can generate diamine, further by cyanide diamine ethylation, hydrogenation can generate three amine, three amine further by nitrile ethylation, hydrogenation can generate tetramine.
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
Crosslinking agent of epoxy coating, made great achievements, since carried out by the earliest after part into a modified aliphatic amine salt water soluble crosslinking agent to later do not need to use organic acid salt of water-based epoxy crosslinking agent.
Epoxy coating cross-linking agent in the study, through part into a modified aliphatic amine salt water soluble crosslinking agent is by adding organic acid salt to reduce the reaction activity and increase the water solubility, stability, excess acetic acid on corrosion of steel have certain effect, so should not be used in steel structures.
To solve the problem of waterborne epoxy coatings corrosion resistance, the crosslinking agent of epoxy coating research and development of some new crosslinking agent, the crosslinking agent does not need to use more organic acid salt, mainly through the introduction of polyoxyethylene chains, make its dispersed in water, often using hydrophilic chain segments are: polyethylene glycol (peg) and polyoxyethylene amine, polyoxyethylene glycol diglycidyl ether, etc., at the same time use section of the main chain containing polyoxyethylene chain to reduce the crosslinking density.
Fatty amine, refers to the length of carbon chain within the scope of the C8 C22 - the major types of organic amine compound, it is the same as general amine, primary amine, secondary amine and tertiary amine and polyamine four categories, and the primary, secondary, tertiary amine depends on the number of hydrogen atoms are replaced by alkyl of ammonia.
Aliphatic amine is ammonia organic derivatives, C8-10 short chain fatty amine has certain solubility in water, long chain aliphatic amine generally insoluble in water, room temperature is liquid or solid, is alkaline, as an organic alkali of the skin and mucous membranes with a stimulus and corrode action.
Fatty alcohol is synthesized from raw materials. It is mainly composed of fatty alcohol and dimethylamine reaction to produce monoalkyl dimethylamine, fatty alcohol and an amine reaction to produce a dialkyl monomethyl tertiary amine, fatty alcohol and ammonia reaction to produce trialkyl amine.
Fatty acids are synthesized from raw materials. First fatty acid and ammonia reaction to generate nitrile, fat fat fat hydrogenation generate nitrile primary amine or secondary amine, primary amine or secondary amine im hydrogenation of methyl tertiary amine, primary amine by nitrile ethylation after hydrogenation can generate diamine, further by cyanide diamine ethylation, hydrogenation can generate three amine, three amine further by nitrile ethylation, hydrogenation can generate tetramine.
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
Primary amine can be used as corrosion inhibitor, lubricants, release agents, oil additives, pigment processing additives, thickening agent, wetting agent and dustproof agent, oil additives, chemical fertilizer fertilizer anti-caking agent, ChengMo agent, flotation agent, gear lubricant, hydrophobic agent, waterproof additive, wax emulsion, etc.
The saturated high-carbutamide, such as octadine, is used as a hard rubber and polyurethane foam remover. Dodecylamine is used for the regeneration of natural and synthetic rubber and the surfactant of the electroless tin liquid and the malt derivatives of the reductive amine maltose, the fuel additive for the diesel engine.
Fat primary amine and epoxy ethane adduct is mainly used in the plastics industry in antistatic agent, ethoxylation amine can't dissolve in the plastic, so that it migrated to plastic parts of the surface, once reached the surface, ethoxylation amine will fully absorb moisture from the atmosphere, the surface of the plastic as antistatic plastic.
Twelve amine and methacrylate reaction after saponification and N - dodecyl - B - amino propionic acid, this kind of surfactant properties as: aqueous solution for light color or colorless transparent liquid, soluble in water or ethanol, easily biodegradable, hard water resistance, the stimulus to the skin is very small, toxicity is small. USES: foaming agent, emulsifier, corrosion inhibitor, liquid detergent, shampoo, hair conditioner, softener, antistatic agent, etc.
Organic acids are organic compounds that are acidic. The most common organic acid is carboxylic acid, whose acid is derived from carboxyl (-cooh). Sulfonic acid (-so3h), sulfonic acid (RSOOH) and thiocarboxylic acid (RCOSH) are also organic acids. Organic acids can be produced with alcohols.
Epoxy coatings generally fall into two, oily epoxy coatings and aqueous epoxy coatings according to the using performance, generally have abrasion resistance of epoxy coating and epoxy anticorrosion coatings, strict division there should be anti-static epoxy coatings and building decorative coating, epoxy segments should be 4 kinds more exactly.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Primary amine can be used as corrosion inhibitor, lubricants, release agents, oil additives, pigment processing additives, thickening agent, wetting agent and dustproof agent, oil additives, chemical fertilizer fertilizer anti-caking agent, ChengMo agent, flotation agent, gear lubricant, hydrophobic agent, waterproof additive, wax emulsion, etc.
The saturated high-carbutamide, such as octadine, is used as a hard rubber and polyurethane foam remover. Dodecylamine is used for the regeneration of natural and synthetic rubber and the surfactant of the electroless tin liquid and the malt derivatives of the reductive amine maltose, the fuel additive for the diesel engine.
Fat primary amine and epoxy ethane adduct is mainly used in the plastics industry in antistatic agent, ethoxylation amine can't dissolve in the plastic, so that it migrated to plastic parts of the surface, once reached the surface, ethoxylation amine will fully absorb moisture from the atmosphere, the surface of the plastic as antistatic plastic.
Twelve amine and methacrylate reaction after saponification and N - dodecyl - B - amino propionic acid, this kind of surfactant properties as: aqueous solution for light color or colorless transparent liquid, soluble in water or ethanol, easily biodegradable, hard water resistance, the stimulus to the skin is very small, toxicity is small. USES: foaming agent, emulsifier, corrosion inhibitor, liquid detergent, shampoo, hair conditioner, softener, antistatic agent, etc.
Organic acids are organic compounds that are acidic. The most common organic acid is carboxylic acid, whose acid is derived from carboxyl (-cooh). Sulfonic acid (-so3h), sulfonic acid (RSOOH) and thiocarboxylic acid (RCOSH) are also organic acids. Organic acids can be produced with alcohols.
Epoxy coatings generally fall into two, oily epoxy coatings and aqueous epoxy coatings according to the using performance, generally have abrasion resistance of epoxy coating and epoxy anticorrosion coatings, strict division there should be anti-static epoxy coatings and building decorative coating, epoxy segments should be 4 kinds more exactly.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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