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The classification of crosslinking agents
2017-5-18 17:49:31
The classification of crosslinking agents
Acrylate classes (diacrylate, dimethyl methacrylate, dimethyl methacrylate, TAC, acrylate, HEA, HPA, HEMA, HPMA, MMA).
Organic peroxide (diisopropyl benzene, peroxide, 2, 4, 2, 4, 2, chlorobenzoyl).
Metal organic compound (isopropanol, zinc acetate, acetyl acetone titanium).
Nitrogen prodiazine (diazepam crosslinking agent sac-100).
Multifunctional polycarbonized diylamine crosslinking agent such as un-557.
Closed crosslinking agent such as un-125f
Isocyanate crosslinking agent such as un-820
Agent means as a kind of monomer on the so-called stated in aggregate into the molecular chain structure of National People's Congress, or as a component added to the adhesive, can stable storage, only when heated to a certain temperature or radiation condition that crosslinking reaction to happen. Agent on common stated alkene monomers, such as hydroxyl ethyl acrylate, acrylic acid, hydroxypropyl acrylate, methyl acrylic acid and hydroxy ethyl methacrylate, methyl hydroxypropyl acrylate, divinyl benzene and N - methylol acrylamide, diacetone acrylamide.
Modified td I trimer crosslinking agent synthesis. Nco: oh (mass ratio) 6:1, using the three polymerization catalytic reaction, the termination reaction, the residual base closure and the phased response.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine packing： net weight 200KG/ galvanized iron drum (a small cabinet pallet loaded 16 tons), 1000KG/IB barrels (a small cabinet loaded 18 tons or 23 tons of ISOTANK).
Process steps: polyol - carboxy acid preparation, according to the formula will, trimethylolpropane, neopentyl glycol, partial benzene third anhydride, dm - pa, butyl acetate, xylene stir in reaction kettle, uniform temperature to 80 ℃ dissolve, then heating it return to the transparent to 148 ℃, the cooling filter the material to 40 ℃. Set aside.
3 get together the preparation: according to the formula will join the reaction kettle stirring, toluene, xylene, return after take off the water temperature to 148 ℃, the temperature to 120 ℃, add 10% lithium phosphate mixture well, nitrogen, adding tdi monomer adding kettle drops, 3 h after the add, thermal reaction 2 h 120 ℃, 130 ℃ for 1 h, the temperature to 65 ℃, the polyol - carboxy acid into add kettle began drops, the exothermic reaction, temperature under 75 ℃ and drops out, 80 ℃ heat preservation 2 h, sampling measurement of free tdi < 0.9%, adding 10% tricresyl phosphate fluid temperature to 85 ℃ reaction 2 h (or reduced to 25 ℃ stand for 7 d), the detection of free tdi < 0.2%, adding 10% dimethyl sulfate solution, 10% dimethyl pyrazole fluid temperature to 90 ℃ for 15 min reaction, vacuum out organic solvent, adding hydrophilic solvents adjust the solid content is 50%, cooled to 50 ℃ 50% triethylamine solution, n - methyl diethanolamine to adjust p h value is 8. 4, up to 60 ℃ reaction to transparent, cooled to 40 ℃ discharging.
We observed the nitrogenous concentration of the near surface of the sample. An aging sample of the air was found to have a peak of 8 per cent of the mass of the surface nitrogen, while the initial 2 per cent was in the same condition, while the oxygen was down to 24 per cent. The main difference between the sulfur and the sulfur is that the nitrogen does not have the displacement of the peak to the ontological direction. Maybe we will discuss it later. As with sulphur, there is no concentration of nitrogen in a high vacuum.
The product of thermal aging. We tried to detect nitrous oxide as a biodegradable product of the nitrogen chain. In fact, the general consensus is that the degradation of nitrogen-containing molecules will produce hydrocyanic acid and/or ammonia, rather than nitrogen oxides as the products of the final degradation phase. The degradation of the other sulfide is SO2.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Acrylate classes (diacrylate, dimethyl methacrylate, dimethyl methacrylate, TAC, acrylate, HEA, HPA, HEMA, HPMA, MMA).
Organic peroxide (diisopropyl benzene, peroxide, 2, 4, 2, 4, 2, chlorobenzoyl).
Metal organic compound (isopropanol, zinc acetate, acetyl acetone titanium).
Nitrogen prodiazine (diazepam crosslinking agent sac-100).
Multifunctional polycarbonized diylamine crosslinking agent such as un-557.
Closed crosslinking agent such as un-125f
Isocyanate crosslinking agent such as un-820
Agent means as a kind of monomer on the so-called stated in aggregate into the molecular chain structure of National People's Congress, or as a component added to the adhesive, can stable storage, only when heated to a certain temperature or radiation condition that crosslinking reaction to happen. Agent on common stated alkene monomers, such as hydroxyl ethyl acrylate, acrylic acid, hydroxypropyl acrylate, methyl acrylic acid and hydroxy ethyl methacrylate, methyl hydroxypropyl acrylate, divinyl benzene and N - methylol acrylamide, diacetone acrylamide.
Modified td I trimer crosslinking agent synthesis. Nco: oh (mass ratio) 6:1, using the three polymerization catalytic reaction, the termination reaction, the residual base closure and the phased response.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine packing： net weight 200KG/ galvanized iron drum (a small cabinet pallet loaded 16 tons), 1000KG/IB barrels (a small cabinet loaded 18 tons or 23 tons of ISOTANK).
Process steps: polyol - carboxy acid preparation, according to the formula will, trimethylolpropane, neopentyl glycol, partial benzene third anhydride, dm - pa, butyl acetate, xylene stir in reaction kettle, uniform temperature to 80 ℃ dissolve, then heating it return to the transparent to 148 ℃, the cooling filter the material to 40 ℃. Set aside.
3 get together the preparation: according to the formula will join the reaction kettle stirring, toluene, xylene, return after take off the water temperature to 148 ℃, the temperature to 120 ℃, add 10% lithium phosphate mixture well, nitrogen, adding tdi monomer adding kettle drops, 3 h after the add, thermal reaction 2 h 120 ℃, 130 ℃ for 1 h, the temperature to 65 ℃, the polyol - carboxy acid into add kettle began drops, the exothermic reaction, temperature under 75 ℃ and drops out, 80 ℃ heat preservation 2 h, sampling measurement of free tdi < 0.9%, adding 10% tricresyl phosphate fluid temperature to 85 ℃ reaction 2 h (or reduced to 25 ℃ stand for 7 d), the detection of free tdi < 0.2%, adding 10% dimethyl sulfate solution, 10% dimethyl pyrazole fluid temperature to 90 ℃ for 15 min reaction, vacuum out organic solvent, adding hydrophilic solvents adjust the solid content is 50%, cooled to 50 ℃ 50% triethylamine solution, n - methyl diethanolamine to adjust p h value is 8. 4, up to 60 ℃ reaction to transparent, cooled to 40 ℃ discharging.
We observed the nitrogenous concentration of the near surface of the sample. An aging sample of the air was found to have a peak of 8 per cent of the mass of the surface nitrogen, while the initial 2 per cent was in the same condition, while the oxygen was down to 24 per cent. The main difference between the sulfur and the sulfur is that the nitrogen does not have the displacement of the peak to the ontological direction. Maybe we will discuss it later. As with sulphur, there is no concentration of nitrogen in a high vacuum.
The product of thermal aging. We tried to detect nitrous oxide as a biodegradable product of the nitrogen chain. In fact, the general consensus is that the degradation of nitrogen-containing molecules will produce hydrocyanic acid and/or ammonia, rather than nitrogen oxides as the products of the final degradation phase. The degradation of the other sulfide is SO2.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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