News Details
Coating of polyisocyanate crosslinking agent
2017-4-14 22:52:29
Coating of polyisocyanate crosslinking agent,The type, performance and application. Turn diisocyanate as the cause of polyisocyanate, in addition to human body health, and improve the functionality of isocyanate. By isocyanate monomer polymerization reaction, can get functionality is greater than 2 polyisocyanate, and resin crosslinking, three-dimensional crosslinked network can be formed, the paint film of the crosslinking density can be high enough, system has the high resistance and patience.
Based on TDI of polyisocyanate on the market at present basically has TDI adduct, TDI trimer, TDI/HDI copolymer and TDI prepolymer. TDI adduct is made up of TDI and trimethylolpropane (TMP) bonus income.
TDI trimer was derived from TDI monomer addition. TDI/HDI copolymer by TDI and HDI bonus income.
Based on HDI polyisocyanate on the market at present basically has HDI trimer and HDI biuret. HDI trimer was mainly composed of HDI monomer polymerization, depending on the degree of polymerization, can produce different products, the main difference is that functionality, viscosity and NCO content is different. HDI monomer polymerization degree, the greater the third functionality in a way, the higher the viscosity is higher, but the lower the NCO content, and vice versa.
HDI biuret by HDI monomer and water addition. According to the different degree of polymerization, it mainly include standard HDI biuret and low viscosity HDI biuret.
In addition, there are also some HDI prepolymer market-oriented products, but their application without biuret and trimer widely, in this no longer is introduced in detail.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Uses:
The product is identical to Ethancure 100 and Lonza DETDA 80, DETDA is very effective polyurethane elastomer chain extender; also be used as polyurethane and epoxy resin curing agent, epoxy resin of an antioxidant, industrial oils and lubricants . In addition, also as intermediates in organic synthesis.Especially for the RIM (reaction injection molding), is important in the field of spray polyurea chain extender species. Also can be used for casting polyurethane elastomer (CPU) and a curing agent, epoxy curing agent, epoxy resin of antioxidants, lubricants and industrial oils other antioxidants.
Based on IPDI polyisocyanate, H12MDI and MDI. Market-oriented products are based on IPDI IPDI trimer and prepolymer, these products are of high glass transition temperature, and weather resistance and chemical resistance, mostly used to improve the system, such as car repair paint drying speed. Based on MDI market products mainly prepolymer, mainly used for primer and areas of elasticity of demand is high. On the market has not yet been H12MDI based polyisocyanate, most of the H12MDI used for preparation of PUD and elastomers.
TDI or HDI crosslinking agent is commonly TDI, HDI monomer with hydroxyl substance after addition reaction system
The trimer refers to TDI, HDI monomer through fertilizer after catalysis and the formation of the
TDI crosslinker generally USES more extensive, can match a variety of paint
HDI crosslinking agent is commonly used for requiring yellowing of the paint
Trimer crosslinking agent is added to the above two kinds of crosslinking agent, rise to improve the drying speed, extinction, and improve the effect of hardness, trimer crosslinking agent does not generally used alone, is used as an additive.
Also points type trimer, generally has the branch of modification and no modification, the change of the difference between the two glossiness and tolerance.
TMP - TDI adduct is most, the most widely used at home and abroad of aromatic isocyanate crosslinking agent, colorless transparent liquid, relative density 1.17. Viscosity, excellent with hydroxyl component mixing solubility, low content of free monomer.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Based on TDI of polyisocyanate on the market at present basically has TDI adduct, TDI trimer, TDI/HDI copolymer and TDI prepolymer. TDI adduct is made up of TDI and trimethylolpropane (TMP) bonus income.
TDI trimer was derived from TDI monomer addition. TDI/HDI copolymer by TDI and HDI bonus income.
Based on HDI polyisocyanate on the market at present basically has HDI trimer and HDI biuret. HDI trimer was mainly composed of HDI monomer polymerization, depending on the degree of polymerization, can produce different products, the main difference is that functionality, viscosity and NCO content is different. HDI monomer polymerization degree, the greater the third functionality in a way, the higher the viscosity is higher, but the lower the NCO content, and vice versa.
HDI biuret by HDI monomer and water addition. According to the different degree of polymerization, it mainly include standard HDI biuret and low viscosity HDI biuret.
In addition, there are also some HDI prepolymer market-oriented products, but their application without biuret and trimer widely, in this no longer is introduced in detail.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Uses:
The product is identical to Ethancure 100 and Lonza DETDA 80, DETDA is very effective polyurethane elastomer chain extender; also be used as polyurethane and epoxy resin curing agent, epoxy resin of an antioxidant, industrial oils and lubricants . In addition, also as intermediates in organic synthesis.Especially for the RIM (reaction injection molding), is important in the field of spray polyurea chain extender species. Also can be used for casting polyurethane elastomer (CPU) and a curing agent, epoxy curing agent, epoxy resin of antioxidants, lubricants and industrial oils other antioxidants.
Based on IPDI polyisocyanate, H12MDI and MDI. Market-oriented products are based on IPDI IPDI trimer and prepolymer, these products are of high glass transition temperature, and weather resistance and chemical resistance, mostly used to improve the system, such as car repair paint drying speed. Based on MDI market products mainly prepolymer, mainly used for primer and areas of elasticity of demand is high. On the market has not yet been H12MDI based polyisocyanate, most of the H12MDI used for preparation of PUD and elastomers.
TDI or HDI crosslinking agent is commonly TDI, HDI monomer with hydroxyl substance after addition reaction system
The trimer refers to TDI, HDI monomer through fertilizer after catalysis and the formation of the
TDI crosslinker generally USES more extensive, can match a variety of paint
HDI crosslinking agent is commonly used for requiring yellowing of the paint
Trimer crosslinking agent is added to the above two kinds of crosslinking agent, rise to improve the drying speed, extinction, and improve the effect of hardness, trimer crosslinking agent does not generally used alone, is used as an additive.
Also points type trimer, generally has the branch of modification and no modification, the change of the difference between the two glossiness and tolerance.
TMP - TDI adduct is most, the most widely used at home and abroad of aromatic isocyanate crosslinking agent, colorless transparent liquid, relative density 1.17. Viscosity, excellent with hydroxyl component mixing solubility, low content of free monomer.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Spanish
French
Italian
Portuguese
Japanese
Korean
Arabic
Russian