News Details
Polyurethane USES paint crosslinking agent
2017-6-13 11:48:29
Polyurethane USES paint crosslinking agent
Synthesis of polyurethane. Main raw materials preparation and refining
Isopolone diisocyanate (IPDI), industrial products; Polyether polyols (N220, relative molecular weight of 2000), industrial products; The castor oil (C.O), which is pure; 1, 4-butanol (BDO), industrial products; Trimethyl-propane (TMP), reagent grade; Epoxy resins e-20, industrial products; Dihydroxymethyl propionic acid (DMPA), industrial products; Methyl methacrylate (MMA), industrial products; N-methylpyrrolidone (NMP), industrial products; Triethylamine (TEA), ethylenediamine (EDA), acetone, analytical pure, before use with 4A molecular sieve drying; Azo diisobutyronitrile (AIBN), chemically pure; Dibutyl dibutyl (DBTDL), analytical pure; It is an agent of film, fluid and thickening agent.
Light initiator. As an important part of uv curing materials, light initiator role is to absorb certain wavelengths of light after active free radicals or cationic, triggered or catalytic corresponding monomers or prepolymer polymerization.
In uv curing system, light initiator after appropriate absorbed light, light physical process to an excited state, if the energy is greater than the keys of fracture energy could generate primary activity, such as free radicals or ion, causing polymerization.
The free radical initiator has benzoin, benzoin, phenylketone and thiocyanone, which affect the solidification rate by the resistance of O 2 in the air.
Another take hydrogen type initiator using tertiary amine photosensitizer constitute the initiator/photosensitizer compound initiator system, can inhibit the polymerization of O 2, improve the curing rate.
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
In addition, the large molecule photoinitiator is divided into the side chain and the main chain cleaved. The diphenylketone, thiocyanone, and other photoactive arylone, as the side group, were made by the lateral chain of the large molecule to capture the photoinitiator of the large molecule of hydrogen. Main chain type cracking, represented by benzoin ether polycarbonate, can use these light initiator synthesis of block copolymer, polymer materials to achieve more balanced and excellent properties.
Small molecules in conventional light initiator can aggregate group, is introduced in a quick can light polymerization initiator, the molecules in the curing light, this kind of initiator used only on special occasions. Shigeru titanium light initiator is one of the few can meet the requirements of the various aspects of metal organic light initiator, one of them has good light activity, thermal stability and environmental performance.
Not only in the visible light, but also in the U V light region, but the extinction coefficient is too large for the thin coating. Cationic photoinitiators are mainly iodide salt and thionyl salt and aromatic iron salt. The cationic photoinitiator causes high efficiency, the oxygen can't stop polymerization, the curing reaction is not easy to terminate, suitable for the solidification of color paint and thick film.
The main ingredients of U V curing materials are stabilizer, leveler, defoaming agent, wetting agent, thickening agent, dispersant, filler and pigment etc. Its main effect is: improve the production technology of coating, improve the storage stability of coating, improve the construction performance of coating, improve coating performance and so on.
Synthetic process of water-based polyurethane resin. Performed under dry nitrogen protection, the dehydration of polyether diol, castor oil, IPDI and DBTDL joined with a thermometer, mixing device, and the reflux condenser 1000 mL of four flask, NCO value is measured by two n-butyl amine titration, reaction to the NCO is close to the theoretical value, and then add BDO, heat preservation for 1 h. NCO after reaching the theoretical value to join dihydroxy methyl propionic acid (DMPA), epoxy resin and trimethylolpropane, response to NCO e., reaching and then cooled to join MMA PU/MMA prepolymer.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Synthesis of polyurethane. Main raw materials preparation and refining
Isopolone diisocyanate (IPDI), industrial products; Polyether polyols (N220, relative molecular weight of 2000), industrial products; The castor oil (C.O), which is pure; 1, 4-butanol (BDO), industrial products; Trimethyl-propane (TMP), reagent grade; Epoxy resins e-20, industrial products; Dihydroxymethyl propionic acid (DMPA), industrial products; Methyl methacrylate (MMA), industrial products; N-methylpyrrolidone (NMP), industrial products; Triethylamine (TEA), ethylenediamine (EDA), acetone, analytical pure, before use with 4A molecular sieve drying; Azo diisobutyronitrile (AIBN), chemically pure; Dibutyl dibutyl (DBTDL), analytical pure; It is an agent of film, fluid and thickening agent.
Light initiator. As an important part of uv curing materials, light initiator role is to absorb certain wavelengths of light after active free radicals or cationic, triggered or catalytic corresponding monomers or prepolymer polymerization.
In uv curing system, light initiator after appropriate absorbed light, light physical process to an excited state, if the energy is greater than the keys of fracture energy could generate primary activity, such as free radicals or ion, causing polymerization.
The free radical initiator has benzoin, benzoin, phenylketone and thiocyanone, which affect the solidification rate by the resistance of O 2 in the air.
Another take hydrogen type initiator using tertiary amine photosensitizer constitute the initiator/photosensitizer compound initiator system, can inhibit the polymerization of O 2, improve the curing rate.
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
In addition, the large molecule photoinitiator is divided into the side chain and the main chain cleaved. The diphenylketone, thiocyanone, and other photoactive arylone, as the side group, were made by the lateral chain of the large molecule to capture the photoinitiator of the large molecule of hydrogen. Main chain type cracking, represented by benzoin ether polycarbonate, can use these light initiator synthesis of block copolymer, polymer materials to achieve more balanced and excellent properties.
Small molecules in conventional light initiator can aggregate group, is introduced in a quick can light polymerization initiator, the molecules in the curing light, this kind of initiator used only on special occasions. Shigeru titanium light initiator is one of the few can meet the requirements of the various aspects of metal organic light initiator, one of them has good light activity, thermal stability and environmental performance.
Not only in the visible light, but also in the U V light region, but the extinction coefficient is too large for the thin coating. Cationic photoinitiators are mainly iodide salt and thionyl salt and aromatic iron salt. The cationic photoinitiator causes high efficiency, the oxygen can't stop polymerization, the curing reaction is not easy to terminate, suitable for the solidification of color paint and thick film.
The main ingredients of U V curing materials are stabilizer, leveler, defoaming agent, wetting agent, thickening agent, dispersant, filler and pigment etc. Its main effect is: improve the production technology of coating, improve the storage stability of coating, improve the construction performance of coating, improve coating performance and so on.
Synthetic process of water-based polyurethane resin. Performed under dry nitrogen protection, the dehydration of polyether diol, castor oil, IPDI and DBTDL joined with a thermometer, mixing device, and the reflux condenser 1000 mL of four flask, NCO value is measured by two n-butyl amine titration, reaction to the NCO is close to the theoretical value, and then add BDO, heat preservation for 1 h. NCO after reaching the theoretical value to join dihydroxy methyl propionic acid (DMPA), epoxy resin and trimethylolpropane, response to NCO e., reaching and then cooled to join MMA PU/MMA prepolymer.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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