News Details
Environmental protection polyurethane coating crosslinking agent
2017-4-13 23:06:46
Environmental protection polyurethane coating crosslinking agent, along with the people environmental protection consciousness enhancement, the development of low pollution, high performance, multi-function and environmentally friendly water-based coating has become the developing direction of the coating technology. This contributed to the research and development of waterborne pu coatings.
Waterborne polyurethane coatings and solvent-based polyurethane coating with excellent performance, coating high hardness, adhesion, high wear resistance, widely used in industrial protection, wood furniture and car polishing, etc.
Used more isocyanate waterborne polyurethane crosslinking agent is generally do not contain organic solvent liquid crosslinking agent, when using dispersed in water.
Solvent-free polyurethane coating with high solid content of crosslinking agent had development abroad. 70 s ~ 80 s of the 20th century, the development of solvent-free polyurethane coating crosslinking agent or high solid content. , including Rubinate series is MDI based waterborne polyurethane crosslinking agent, the other is a series of HDI crosslinking agent. WT series is water-based polyurethane crosslinking agent, the other is ordinary high solid content or solvent-free polyurethane crosslinking agent. HDI derivatives is not yellowing, excellent weatherability of environmentally friendly crosslinking agent.
In order to meet the increasingly stringent environmental requirements and reduce the swim divorced cyanate ester monomer, the harm of human body in domestic has done many work, at present a lot of coating enterprise has to produce low swim divorced cyanate ester content of crosslinking agent polyurethane coatings.
Northern coating industry research and design institute makes full use of TDI different isomers and replace on the reactivity of NCO group differences, through the design of formula, control of reaction conditions and the process, made of crosslinking agent mass fraction of free TDI in finished products is only 0.15% ~ 0.5%.
HDI biuret synthesis technology research and industrialization progress of HDI biuret solid is an important kind of solvent-free polyurethane coating agent, the domestic research for this product has been on for several years. The synthesis of the HDI biuret method carried on the thorough research, has been able to inhibit the formation of by-products polyurea, so as to solve the problems of industrialization of the product.
Polyurethane coating (including dispensing diluted), volatile organic compounds (VOC) content in low gloss! 700 g/L, high gloss! 600 g/L; Benzene content should be! The total 0.5%, toluene and xylene should be! 40%, free TDI content should be! 0.7%. Another Gb18583-2001 "interior decoration decorates material harmful material set limit to in the adhesive" of the harmful substance content in solvent polyurethane adhesive is also limited.
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
Will HDI1512g 18 g, water soluble in 350 g of ethylene glycol methyl ether acetate, in 1 h 160 c reaction, and then by solvent recovery HDI and thin film evaporation process, get HDI biuret, the NCO mass fraction is 23.7%, the viscosity is 1200 mpa ? s (25 c), free HDI mass fraction of 0.2%.
Swim divorced cyanate ester monomer removal technology and equipment research. Low swim divorced cyanate ester crosslinking polyurethane coating agent industrialization is the key to swim divorced cyanate ester monomer removal process and equipment. For domestic commonly used TDI TMP adduct, manufacturers generally use TDI and TMP reaction molar ratio is 3.0 ~ 3.0, the product of the free TDI monomer mass fraction can be as high as 6%.
Solvent extraction or adding melamine to intermediate product catalyst reaction at low temperature is not the best way to industrial production. Because of these two methods in addition to the production cycle is long, the quality of the product may not be better.
Adopts the more advanced "combined" thin film evaporation continuous production process, can be efficient quickly will crosslinking agent product middle divorced cyanate ester monomer mass fraction below 0.5%.
Solid content is 100%, for example, the coating crosslinking agent try expanding product, NCO mass fraction of about 22.4%, 25 c at about 5 pa ? s viscosity, mass fraction of free TDI monomer between 0.24% ~ 0.50%; Solid content is 75% of the coating curing agent product, NCO mass fraction is 11.5% ~ 13.5%, 25 c at about 2 pa ? s viscosity, mass fraction of free TDI in 0.23% ~ 0.38%.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Waterborne polyurethane coatings and solvent-based polyurethane coating with excellent performance, coating high hardness, adhesion, high wear resistance, widely used in industrial protection, wood furniture and car polishing, etc.
Used more isocyanate waterborne polyurethane crosslinking agent is generally do not contain organic solvent liquid crosslinking agent, when using dispersed in water.
Solvent-free polyurethane coating with high solid content of crosslinking agent had development abroad. 70 s ~ 80 s of the 20th century, the development of solvent-free polyurethane coating crosslinking agent or high solid content. , including Rubinate series is MDI based waterborne polyurethane crosslinking agent, the other is a series of HDI crosslinking agent. WT series is water-based polyurethane crosslinking agent, the other is ordinary high solid content or solvent-free polyurethane crosslinking agent. HDI derivatives is not yellowing, excellent weatherability of environmentally friendly crosslinking agent.
In order to meet the increasingly stringent environmental requirements and reduce the swim divorced cyanate ester monomer, the harm of human body in domestic has done many work, at present a lot of coating enterprise has to produce low swim divorced cyanate ester content of crosslinking agent polyurethane coatings.
Northern coating industry research and design institute makes full use of TDI different isomers and replace on the reactivity of NCO group differences, through the design of formula, control of reaction conditions and the process, made of crosslinking agent mass fraction of free TDI in finished products is only 0.15% ~ 0.5%.
HDI biuret synthesis technology research and industrialization progress of HDI biuret solid is an important kind of solvent-free polyurethane coating agent, the domestic research for this product has been on for several years. The synthesis of the HDI biuret method carried on the thorough research, has been able to inhibit the formation of by-products polyurea, so as to solve the problems of industrialization of the product.
Polyurethane coating (including dispensing diluted), volatile organic compounds (VOC) content in low gloss! 700 g/L, high gloss! 600 g/L; Benzene content should be! The total 0.5%, toluene and xylene should be! 40%, free TDI content should be! 0.7%. Another Gb18583-2001 "interior decoration decorates material harmful material set limit to in the adhesive" of the harmful substance content in solvent polyurethane adhesive is also limited.
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
Will HDI1512g 18 g, water soluble in 350 g of ethylene glycol methyl ether acetate, in 1 h 160 c reaction, and then by solvent recovery HDI and thin film evaporation process, get HDI biuret, the NCO mass fraction is 23.7%, the viscosity is 1200 mpa ? s (25 c), free HDI mass fraction of 0.2%.
Swim divorced cyanate ester monomer removal technology and equipment research. Low swim divorced cyanate ester crosslinking polyurethane coating agent industrialization is the key to swim divorced cyanate ester monomer removal process and equipment. For domestic commonly used TDI TMP adduct, manufacturers generally use TDI and TMP reaction molar ratio is 3.0 ~ 3.0, the product of the free TDI monomer mass fraction can be as high as 6%.
Solvent extraction or adding melamine to intermediate product catalyst reaction at low temperature is not the best way to industrial production. Because of these two methods in addition to the production cycle is long, the quality of the product may not be better.
Adopts the more advanced "combined" thin film evaporation continuous production process, can be efficient quickly will crosslinking agent product middle divorced cyanate ester monomer mass fraction below 0.5%.
Solid content is 100%, for example, the coating crosslinking agent try expanding product, NCO mass fraction of about 22.4%, 25 c at about 5 pa ? s viscosity, mass fraction of free TDI monomer between 0.24% ~ 0.50%; Solid content is 75% of the coating curing agent product, NCO mass fraction is 11.5% ~ 13.5%, 25 c at about 2 pa ? s viscosity, mass fraction of free TDI in 0.23% ~ 0.38%.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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