News Details
Research progress of epoxy coating crosslinking agent
2017-4-18 16:58:25
Research progress of epoxy coating crosslinking agent, since development have made great achievements, from 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.
After part into a modified aliphatic amine salt water soluble crosslinking agent is by adding organic acid salt to reduce and increase the water solubility, stability and reactivity of 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, developed 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.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Raw material ：
TDA industrial, Sichuan production
Ethylene (Et) polymer grade, Shanghai production
TEA industrial imports
A reagent grade additives
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 as raw material to synthesis. Is mainly composed of fatty alcohol and dimethylamine reaction single alkyl dimethyl tertiary amine, fatty alcohol and a methylamine reaction with alkyl methyl tertiary amines, fatty alcohols generated three alkyl tertiary amine and ammonia reaction.
Fatty acid as raw material to synthesis. 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.
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.
High carbon saturated primary amine such as 18 amine is used as a hard rubber and polyurethane foam remover. Twelve amine for regeneration of natural and synthetic rubber and chemical tin plating liquid surfactant and reductive amination isomaltose malt was derivatives, oil amine as diesel fuel additives, etc.
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. Purpose is: the foaming agent, emulsifying agent, corrosion inhibitor, liquid detergent, shampoo, hair conditioner, softening agent, antistatic agent, etc.
Organic acids refers to some acidic organic compounds. Is the most common organic carboxylic acid, the acid is the result of carboxyl (-cooh) group. Sulfonic acid (- SO3H), the sulfonic acid (RSOOH), sulfur, carboxylic acid (RCOSH) also belongs to organic acid, etc. Organic acid can react with alcohol ester.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
After part into a modified aliphatic amine salt water soluble crosslinking agent is by adding organic acid salt to reduce and increase the water solubility, stability and reactivity of 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, developed 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.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Raw material ：
TDA industrial, Sichuan production
Ethylene (Et) polymer grade, Shanghai production
TEA industrial imports
A reagent grade additives
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 as raw material to synthesis. Is mainly composed of fatty alcohol and dimethylamine reaction single alkyl dimethyl tertiary amine, fatty alcohol and a methylamine reaction with alkyl methyl tertiary amines, fatty alcohols generated three alkyl tertiary amine and ammonia reaction.
Fatty acid as raw material to synthesis. 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.
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.
High carbon saturated primary amine such as 18 amine is used as a hard rubber and polyurethane foam remover. Twelve amine for regeneration of natural and synthetic rubber and chemical tin plating liquid surfactant and reductive amination isomaltose malt was derivatives, oil amine as diesel fuel additives, etc.
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. Purpose is: the foaming agent, emulsifying agent, corrosion inhibitor, liquid detergent, shampoo, hair conditioner, softening agent, antistatic agent, etc.
Organic acids refers to some acidic organic compounds. Is the most common organic carboxylic acid, the acid is the result of carboxyl (-cooh) group. Sulfonic acid (- SO3H), the sulfonic acid (RSOOH), sulfur, carboxylic acid (RCOSH) also belongs to organic acid, etc. Organic acid can react with alcohol ester.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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