News Details
Isocyanate crosslinking agent
2017-4-21 15:38:47
Isocyanate crosslinking agent,In the manufacture of polyurethane powder coating, to avoid the crosslinking reaction at room temperature and coating provides excellent storage stability, must be used by many isocyanate crosslinking agent of isocyanate to protect it.
Although there are quite a lot of isocyanate and a variety of sealants can exist in many different combinations, but only in caprolactam closed isophorone diisocyanate derivative truly of commercial value.
Caprolactam closed IPDI derivatives. Caprolactam closed different fluorine ketone diisocyanate derivative is polyurethane powder coating is the most widely used isocyanate crosslinking agent.
They should have appropriate melting range, making them more than used for powder coating isocyanate crosslinking agent, can use standard extrusion process of powder. When the system is appropriate catalyst, can unlock temperature and crosslinking rate adjustment to adapt to the ordinary conditions of crosslinking of the most commonly used in 160? - 170? Reaction of caprolactam closed isophorone diisocyanate (IPDI, such as B1530). Caprolactam closed IPDI prepolymer, different catalysts used to accelerate the reaction between isocyanate and alcohols.
Isocyanate is one of the main raw material of polyurethane adhesives, making use of isocyanate polyurethane adhesives have diisocyanate, three isocyanate and their modification, one of the most common is diisocyanate. More isocyanate, toluene diisocyanate by low prices of toluene and benzene as raw material, so the development soon, dominant.
Isocyanate molecule contains two or more than two active site, so in the case of polymerization reaction, can be to two or three to extend into linear or crosslinked polymer (size). Industrial preparation of isocyanate is done by reaction with phosgene primary amine.
More isocyanate, the most commonly used is TDI, MDl and PAPI 3 kinds. TDI with 2, 4 - TDI and 2, 6 - TDI, both are isomers, commonly used a mixture of TDI for them. TDI has the advantages of active big, the price is cheap, but volatile, stimulating and toxicity are big. Low temperature methyl isocyanate base on para near a much more lively.
MDI under normal temperature is solid, the activity of two isocyanate base is the same, excitant small, taking it as raw material to the preparation of wife goo has high bonding strength and impact toughness, it is commonly used as sealant adhesion agent Zhai expected a Pap, functions are the three degrees, can be made into high crosslinking density, polyurethane adhesives often cooperate with neoprene, made widely used oxygen butyl - column g glue adhesion agent.
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
Isocyanate is the floorboard of all sorts of isocyanic acid ester. If the number of classification with - NCO groups, including single isocyanate R - N = C = O and diisocyanate O = C = N - R - N = C = O and more isocyanate, etc. Isocyanate part of the production equipment of the reactor, storage tank and other working under high temperature and high pressure, there is a leakage of equipment corrosion or the seals induced toxic accidents and explosion hazards such as fire, must strengthen the technological process, equipment manufacture and maintenance, safety management, to ensure safe and smooth operation.
Urea diketone reduction of IPDI. Suitable for the production of polyurethane coating without blocking agent in isocyanate crosslinking agent is more close IPDI, it is through the condensation process in alkaline medium.
Low content of free NCO groups (less than 1%) and total NCO content is 15.4%. Melting point between 105? - 115? Within the scope. IPDI shrinkage urea diketone and closed isocyanate than the most obvious advantage is no by-products left during crosslinking system.
So from a technical point of view to BF1540 crosslinking polyurethane TGIC powder coating is the best alternative.
However, although BF1540 commercial time has been more than 15 years, but not to create a satisfactory fixed market. This can be attributed to the reactivity of BF1540 (too low and poor solvent resistance and chemical resistance (because of its functionality (2), etc.
TMXDI isocyanate and other. Two new isocyanate - between the base and on - tetramethyl benzene 2 methylene diisocyanate (and of TMXDI) crosslinking agent used in fabrication of powder coating raw material is very potential. Compared with traditional aliphatic isocyanate, they have the advantage of more economical and practical.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Although there are quite a lot of isocyanate and a variety of sealants can exist in many different combinations, but only in caprolactam closed isophorone diisocyanate derivative truly of commercial value.
Caprolactam closed IPDI derivatives. Caprolactam closed different fluorine ketone diisocyanate derivative is polyurethane powder coating is the most widely used isocyanate crosslinking agent.
They should have appropriate melting range, making them more than used for powder coating isocyanate crosslinking agent, can use standard extrusion process of powder. When the system is appropriate catalyst, can unlock temperature and crosslinking rate adjustment to adapt to the ordinary conditions of crosslinking of the most commonly used in 160? - 170? Reaction of caprolactam closed isophorone diisocyanate (IPDI, such as B1530). Caprolactam closed IPDI prepolymer, different catalysts used to accelerate the reaction between isocyanate and alcohols.
Isocyanate is one of the main raw material of polyurethane adhesives, making use of isocyanate polyurethane adhesives have diisocyanate, three isocyanate and their modification, one of the most common is diisocyanate. More isocyanate, toluene diisocyanate by low prices of toluene and benzene as raw material, so the development soon, dominant.
Isocyanate molecule contains two or more than two active site, so in the case of polymerization reaction, can be to two or three to extend into linear or crosslinked polymer (size). Industrial preparation of isocyanate is done by reaction with phosgene primary amine.
More isocyanate, the most commonly used is TDI, MDl and PAPI 3 kinds. TDI with 2, 4 - TDI and 2, 6 - TDI, both are isomers, commonly used a mixture of TDI for them. TDI has the advantages of active big, the price is cheap, but volatile, stimulating and toxicity are big. Low temperature methyl isocyanate base on para near a much more lively.
MDI under normal temperature is solid, the activity of two isocyanate base is the same, excitant small, taking it as raw material to the preparation of wife goo has high bonding strength and impact toughness, it is commonly used as sealant adhesion agent Zhai expected a Pap, functions are the three degrees, can be made into high crosslinking density, polyurethane adhesives often cooperate with neoprene, made widely used oxygen butyl - column g glue adhesion agent.
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
Isocyanate is the floorboard of all sorts of isocyanic acid ester. If the number of classification with - NCO groups, including single isocyanate R - N = C = O and diisocyanate O = C = N - R - N = C = O and more isocyanate, etc. Isocyanate part of the production equipment of the reactor, storage tank and other working under high temperature and high pressure, there is a leakage of equipment corrosion or the seals induced toxic accidents and explosion hazards such as fire, must strengthen the technological process, equipment manufacture and maintenance, safety management, to ensure safe and smooth operation.
Urea diketone reduction of IPDI. Suitable for the production of polyurethane coating without blocking agent in isocyanate crosslinking agent is more close IPDI, it is through the condensation process in alkaline medium.
Low content of free NCO groups (less than 1%) and total NCO content is 15.4%. Melting point between 105? - 115? Within the scope. IPDI shrinkage urea diketone and closed isocyanate than the most obvious advantage is no by-products left during crosslinking system.
So from a technical point of view to BF1540 crosslinking polyurethane TGIC powder coating is the best alternative.
However, although BF1540 commercial time has been more than 15 years, but not to create a satisfactory fixed market. This can be attributed to the reactivity of BF1540 (too low and poor solvent resistance and chemical resistance (because of its functionality (2), etc.
TMXDI isocyanate and other. Two new isocyanate - between the base and on - tetramethyl benzene 2 methylene diisocyanate (and of TMXDI) crosslinking agent used in fabrication of powder coating raw material is very potential. Compared with traditional aliphatic isocyanate, they have the advantage of more economical and practical.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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