News Details
Waterborne coil coating crosslinking agent
2017-6-14 10:55:28
Waterborne coil coating crosslinking agent
Will water saturated polyester resin, amino resin, titanium dioxide, and various additives in proportion mixture water-based paint coating, discuss the influence the properties of water saturated polyester - amino coil coatings.
China is a big producer of coatings, and the total paint production in 2006 has exceeded 5 million tons, of which about 2% ~ 3% of coating production. With the rapid development of the economy, the demand for precoated materials in every field of national economy is also expanding. Currently, more than 95 percent of the world's product lines are based on solvent coatings.
As countries to protect the ecological environment seriously, the environment protection law restrictions on VOC emissions, as well as the people on the environment and health consciousness enhancement, all countries are actively expand of environmentally friendly water-based coatings research and development, already has 5% of the coil start using water-based coil coating production line.
Water-based saturated polyester resins can be combined with water-based amino resins or closed isocyanate crosslinking agents. Waterborne polysaturated ester - amino coil coating has excellent adhesion, good chemical resistance and processing performance. The application of water-based saturated polyester resin and amino resin as the main raw material was discussed.
Test the main ingredients. Water-based saturated polyester resin, homemade; Amino resin CY303, cyanide; The neutralizing agent, dispersant, flutter, wetting agent and anti-foam agent are all imported. N-butanol (NBA), diethylene glycol monobutyl ether (BCS), is an industrial product of the market; Go to the water, make yourself.
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.
The synthesis of water-dispersible saturated polyester resin. Will neopentyl glycol, ethylene glycol, 1, 6 diol, trimethylolpropane, terephthalic acid, isophthalic acid, 1, 6, phthalic anhydride, adipic acid methyl 6 hydrogen, phthalic anhydride, trimellitic anhydride and the pluralistic alcohol and acid in turn into the reaction kettle, according to the formula ratio to material melt, slowly warming began stirring and heating control material velocity, slow reaction, the temperature of 230 ℃, the final acid value control in 45 ~ 50 mgkoh/g, temperature below 120 ℃, ethylene glycol monobutyl ether diluted liquid to solid content is 80%, cooling, filtering, and packaging, or don't need to be diluted into liquid, direct filtration, packaged into block solid.
Methods of preparation of water-based saturated polyester resin dispersion. Deionized water, neutralizer and cosolvent BCS (4% ~ 10%) into the dilution kettle, stir up to 50 ℃, and then gradually add the solid (water dispersible) saturated polyester in kettle, cool after being completely dissolved, filtering and set aside.
Technical indexes of water-based saturated polyester resin dispersion. The effect of neutralizing agent on saturated polyester. The alkaline strength of amine neutralizer has a great effect on pH value, controlling the same pH value, the higher the alkalinity, the lower the neutralization degree, the lower the water dispersibility of the resin.
The boiling point and temperature resistance of the neutralizer have a great influence on the performance of the coating. Dimethyl ethanolamine (activity) and amino 2 - methyl - 2 - propanol with low boiling point, under the condition of the curing temperature is quite volatile, make the cure reaction of carboxyl play a catalytic role. Diethanolamine has a high boiling point, which is not easy to volatilize under the condition of curing problem, and the diethylamine can easily be yellowed under high temperature conditions, so that the coating is yellow.
Preparation of waterborne coil coating. Deionized water, dispersing agent, titanium dioxide, neutralizing agent, water saturated polyester dispersion, defoaming agent in accordance with the formula of input ingredients jar, high-speed stirring dispersion, and then into the sanding machine, the grinding fineness to achieve under 10 microns, dispersed paint was made by the slurry; The remaining resins and auxiliaries are added to the dispersive paste, stirring, adjusting viscosity and pH, filtering and packaging.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Will water saturated polyester resin, amino resin, titanium dioxide, and various additives in proportion mixture water-based paint coating, discuss the influence the properties of water saturated polyester - amino coil coatings.
China is a big producer of coatings, and the total paint production in 2006 has exceeded 5 million tons, of which about 2% ~ 3% of coating production. With the rapid development of the economy, the demand for precoated materials in every field of national economy is also expanding. Currently, more than 95 percent of the world's product lines are based on solvent coatings.
As countries to protect the ecological environment seriously, the environment protection law restrictions on VOC emissions, as well as the people on the environment and health consciousness enhancement, all countries are actively expand of environmentally friendly water-based coatings research and development, already has 5% of the coil start using water-based coil coating production line.
Water-based saturated polyester resins can be combined with water-based amino resins or closed isocyanate crosslinking agents. Waterborne polysaturated ester - amino coil coating has excellent adhesion, good chemical resistance and processing performance. The application of water-based saturated polyester resin and amino resin as the main raw material was discussed.
Test the main ingredients. Water-based saturated polyester resin, homemade; Amino resin CY303, cyanide; The neutralizing agent, dispersant, flutter, wetting agent and anti-foam agent are all imported. N-butanol (NBA), diethylene glycol monobutyl ether (BCS), is an industrial product of the market; Go to the water, make yourself.
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.
The synthesis of water-dispersible saturated polyester resin. Will neopentyl glycol, ethylene glycol, 1, 6 diol, trimethylolpropane, terephthalic acid, isophthalic acid, 1, 6, phthalic anhydride, adipic acid methyl 6 hydrogen, phthalic anhydride, trimellitic anhydride and the pluralistic alcohol and acid in turn into the reaction kettle, according to the formula ratio to material melt, slowly warming began stirring and heating control material velocity, slow reaction, the temperature of 230 ℃, the final acid value control in 45 ~ 50 mgkoh/g, temperature below 120 ℃, ethylene glycol monobutyl ether diluted liquid to solid content is 80%, cooling, filtering, and packaging, or don't need to be diluted into liquid, direct filtration, packaged into block solid.
Methods of preparation of water-based saturated polyester resin dispersion. Deionized water, neutralizer and cosolvent BCS (4% ~ 10%) into the dilution kettle, stir up to 50 ℃, and then gradually add the solid (water dispersible) saturated polyester in kettle, cool after being completely dissolved, filtering and set aside.
Technical indexes of water-based saturated polyester resin dispersion. The effect of neutralizing agent on saturated polyester. The alkaline strength of amine neutralizer has a great effect on pH value, controlling the same pH value, the higher the alkalinity, the lower the neutralization degree, the lower the water dispersibility of the resin.
The boiling point and temperature resistance of the neutralizer have a great influence on the performance of the coating. Dimethyl ethanolamine (activity) and amino 2 - methyl - 2 - propanol with low boiling point, under the condition of the curing temperature is quite volatile, make the cure reaction of carboxyl play a catalytic role. Diethanolamine has a high boiling point, which is not easy to volatilize under the condition of curing problem, and the diethylamine can easily be yellowed under high temperature conditions, so that the coating is yellow.
Preparation of waterborne coil coating. Deionized water, dispersing agent, titanium dioxide, neutralizing agent, water saturated polyester dispersion, defoaming agent in accordance with the formula of input ingredients jar, high-speed stirring dispersion, and then into the sanding machine, the grinding fineness to achieve under 10 microns, dispersed paint was made by the slurry; The remaining resins and auxiliaries are added to the dispersive paste, stirring, adjusting viscosity and pH, filtering and packaging.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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