News Details
The coating is used as a crosslinking agent for aromatic diamine
2017-4-27 11:53:01
The coating is used as a crosslinking agent for aromatic diamine,Aromatic amine is valued for its high Tg, but is limited by its toxicity.The modified aromatics of aromatic diamines have the advantages of high Tg, low toxicity, low water absorption rate and good overall performance.
Research in recent years more aromatic diamine class crosslinking agent has 2 amino diphenyl sulfone (DDS), 2 amino diphenyl methane (DDM), m-phenylene diamine (m), PDA etc., of which most mature DDS research, as is commonly used in high performance epoxy crosslinking agent.DDS is used as the latent epoxy resin intercourse agent, compared with the MPDA, DDM and other aromatic diamine, because of its molecules have strong electron-withdrawing sulfone, greatly reduce the reactivity, its applicable period also growth.
Diaminodiphenyl sulfone, which is also called 4, 4 '-diphenylsulfone, amphenylsulfone, and 2 (4-aminophenyl) sulfone, or DDS, the molecular weight 248.30.White or pale yellow crystalline powder, exposed to air or light oxidized to light red.The relative density of 1.33.The melting point of 175 ~ 181 ℃.Thermal stability of high in the air, broken down slowly to the start of the 280 ℃.Soluble in acetone, soluble in ethanol, tetrahydrofuran, dichloromethane and other common solvents, almost insoluble in water.The DDS molecular structure contains the sulfyl, which absorbs electrons, which makes the reactive activity less reactive and less reactive to epoxy resin.Low toxicity.
Diaminodiphenylmethane is also known as a diphenylamine, or DDM or MDA, with a molecular weight of 198.3.White crystalline powder, relative density (20 ℃ / 4 ℃) 1.15, melting point of 89 ~ 90 ℃, boiling point 232 ℃ (1.2 kPa).Soluble in acetone, methanol.It's not soluble in benzene, ether.Toxic, ld50252mg/kg.
In the absence of promoter, 100 grams of the application of the epoxy resin complexes period up to 1 year, crosslinking temperature to 200 ℃ in general.In order to reduce the crosslinking temperature, the promoter is often added to meet the temperature crosslinking.In recent years in order to improve the system performance of damp and hot and toughness, to the modification of DDS, developed a variety of polyether diamine crosslinking agent, makes them in dry heat resistance is reduced, the diamine due to long distance between the ends of amino, resulting in a decrease of suction point amino, and it has excellent resistance to impact.
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
The method of production of diphenylenediamine is mainly made by using two nitrobenzene-reduction methods.
Benzene by the mixed acid nitration into rooms, neighborhood, on a mixture of dinitrobenzene, then through dinitrobenzene between sodium sulfite and liquid alkali refining, and then use iron powder reduction or hydrogenation reduction phenylenediamine was prepared.
1) iron powder reduction method: first in the reaction kettle with the blender, join iron powder and hydrochloric acid, heat up activation.Add dinitrobenzene between reduction reaction, the temperature control in 98-102 ℃;End of reaction, and soda ash to PH value of 9, vacuum suction filter, the filtrate with hot water washing, the vacuum evaporation under the condition of 65 ℃ and 0.03 MPa.Pioneer water after steaming, distillation vacuum 0.09 0.05 MPa, when temperature is 170-180 ℃, get the product.Here's the equation:
2) hydrogenation reduction method: between two nitrobenzene reduction can use pure hydrogen or hydrogen nitrogen containing 70% hydrogen for hydrogenation, using two or four yuan rainie nickel as catalyst dosage (20%), with ethanol as solvent, the 110-120 ℃, hydrogen pressure, 3.43 to 4.41 MPa, circulation superficial velocity per 0.044 square, under the condition of cubic for tower fluidized bed hydrogenation;Through decompression distillation, the yield is 90% to 95%.The equation is as follows:
Direct ammoniation method: 3) aniline with nickel and nickel oxide as catalyst, aniline and ammonia reaction temperature is 250-250 ℃, the reaction pressure of 29.4 to 29.4 kPa, direct response, get m-phenylene diamine as the main product of crude benzene diamine product, but the yield of less than 10%.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Research in recent years more aromatic diamine class crosslinking agent has 2 amino diphenyl sulfone (DDS), 2 amino diphenyl methane (DDM), m-phenylene diamine (m), PDA etc., of which most mature DDS research, as is commonly used in high performance epoxy crosslinking agent.DDS is used as the latent epoxy resin intercourse agent, compared with the MPDA, DDM and other aromatic diamine, because of its molecules have strong electron-withdrawing sulfone, greatly reduce the reactivity, its applicable period also growth.
Diaminodiphenyl sulfone, which is also called 4, 4 '-diphenylsulfone, amphenylsulfone, and 2 (4-aminophenyl) sulfone, or DDS, the molecular weight 248.30.White or pale yellow crystalline powder, exposed to air or light oxidized to light red.The relative density of 1.33.The melting point of 175 ~ 181 ℃.Thermal stability of high in the air, broken down slowly to the start of the 280 ℃.Soluble in acetone, soluble in ethanol, tetrahydrofuran, dichloromethane and other common solvents, almost insoluble in water.The DDS molecular structure contains the sulfyl, which absorbs electrons, which makes the reactive activity less reactive and less reactive to epoxy resin.Low toxicity.
Diaminodiphenylmethane is also known as a diphenylamine, or DDM or MDA, with a molecular weight of 198.3.White crystalline powder, relative density (20 ℃ / 4 ℃) 1.15, melting point of 89 ~ 90 ℃, boiling point 232 ℃ (1.2 kPa).Soluble in acetone, methanol.It's not soluble in benzene, ether.Toxic, ld50252mg/kg.
In the absence of promoter, 100 grams of the application of the epoxy resin complexes period up to 1 year, crosslinking temperature to 200 ℃ in general.In order to reduce the crosslinking temperature, the promoter is often added to meet the temperature crosslinking.In recent years in order to improve the system performance of damp and hot and toughness, to the modification of DDS, developed a variety of polyether diamine crosslinking agent, makes them in dry heat resistance is reduced, the diamine due to long distance between the ends of amino, resulting in a decrease of suction point amino, and it has excellent resistance to impact.
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
The method of production of diphenylenediamine is mainly made by using two nitrobenzene-reduction methods.
Benzene by the mixed acid nitration into rooms, neighborhood, on a mixture of dinitrobenzene, then through dinitrobenzene between sodium sulfite and liquid alkali refining, and then use iron powder reduction or hydrogenation reduction phenylenediamine was prepared.
1) iron powder reduction method: first in the reaction kettle with the blender, join iron powder and hydrochloric acid, heat up activation.Add dinitrobenzene between reduction reaction, the temperature control in 98-102 ℃;End of reaction, and soda ash to PH value of 9, vacuum suction filter, the filtrate with hot water washing, the vacuum evaporation under the condition of 65 ℃ and 0.03 MPa.Pioneer water after steaming, distillation vacuum 0.09 0.05 MPa, when temperature is 170-180 ℃, get the product.Here's the equation:
2) hydrogenation reduction method: between two nitrobenzene reduction can use pure hydrogen or hydrogen nitrogen containing 70% hydrogen for hydrogenation, using two or four yuan rainie nickel as catalyst dosage (20%), with ethanol as solvent, the 110-120 ℃, hydrogen pressure, 3.43 to 4.41 MPa, circulation superficial velocity per 0.044 square, under the condition of cubic for tower fluidized bed hydrogenation;Through decompression distillation, the yield is 90% to 95%.The equation is as follows:
Direct ammoniation method: 3) aniline with nickel and nickel oxide as catalyst, aniline and ammonia reaction temperature is 250-250 ℃, the reaction pressure of 29.4 to 29.4 kPa, direct response, get m-phenylene diamine as the main product of crude benzene diamine product, but the yield of less than 10%.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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Isopropylphenyl Phosphate(IPPP50)
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Tris(2-chloroisopropyl)Phosphate(TCPP)
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Triphenyl Phosphite (TPPI)
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Triphenyl Phosphate (TPP)
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Triethyl Phosphate (TEP)
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4-Chlorobenzoic acid (PBCA)
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Dimethyl thiotoluene diamine(DMTDA)
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Diethyl toluene diamine(DETDA)
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9-anthracene
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Trimethyl Phosphate (TMP)
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Isopropylphenyl Phosphate(IPPP65)
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Antioxidant Stabilizers|Defoamers|Penetrants
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Isopropylphenyl Phosphate(IPPP35)
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Tris(2-butoxyethyl)phosphate(TBEP)
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Trixylyl Phosphate(TXP)
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4,4'-Methylenebis(N-sec-butylaniline)-MDBA
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Diphenyl Isooctyl Phosphate-DPOP-S141
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Diphenyl Isodecyl Phosphate-DPDP-S148
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Cresyl Diphenyl Phosphate(CDP)
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Tris(1,3-Dichloro-2-Propyl)Phosphate
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Curing Agents|Chain Extenders|Crosslinking Agents
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2,2-Bis(Hydroxymethyl)Propionic Acid|DMPA
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Poly(1,4-Butanediol) Bis(4-Aminobenzoate)|P-1000
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3-Hydroxyethyloxyethyl-1-Hydroxyethylbenzenediene
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1,3-Bis(2-Hydroxyethoxy)Benzene|HER-Solid
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Chain Extender HQEE-Liquid
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Hydroquinone Bis(2-Hydroxyethyl)Ether|HQEE-Solid
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4,4'-Methylene-bis (3-chloro-2,6-diethylaniline)
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Alicyclic Amine Curing Agent Chain Extender HTDA
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Triallyl Isocyanurate|Crosslinker TAIC
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2,2-Bis(Hydroxymethyl)Butyric Acid|DMBA
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4,4'-Methylenebis(2-Ethylbenzenamine)|MOEA
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4,4'-Methylenebis(2,6-diethylaniline)|MDEA
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4,4'-Methylenebis(2-ethyl-6-methylaniline)|MMEA
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4,4'-Diaminodicyclohexyl Methane|PACM,HMDA
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Cycloaliphatic Curing Agent Chain Extender MACM
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3-Chloro-3'-Ethyl-4,4'-Diaminodiphenylmethane
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Flame Retardants|Plasticizers
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Isopropylphenyl Phosphate(IPPP95)
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Trihexyl Phosphate(THP)
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Triisobutyl Phosphate (TIBP)
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1-Phenyl-3-Methyl-5-Pyrazolone(PMP)
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Tris(2-chloroethyl)phosphate(TCEP)
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- News List
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It ACTS as an auxiliary antiox -
The properties of phenolic ant -
Amine antioxidants -
Thermoplastic anti-oxygen agen -
Plastic auxiliary antioxidant -
Molecular structure of antioxi -
High polymer antioxidants -
General-purpose plastic antiox -
Phosphoric acid ester auxiliar -
Antioxidant compound products -
Polypropylene complex antioxid -
Compatibility of antioxidants -
Industrial plastic composite a -
An antioxidant for polymers -
PVC resin antioxidant