News Details
Crosslinking agent for mixture coatings
2017-8-19 11:04:46
Crosslinking agent for mixture coatings
Pt910/912 is a mixture crosslinking agent of polyacid glycolide and diglycolic acid in the development of Huntsman.
Compared with TGIC, this mixture of crosslinking agent eliminates its ecological toxicity, but it still has certain contact toxicity and severe irritation. Due to the decline of the functional degree, the reaction activity is lower than that of TGIC, which needs to be added to the promoter such as DT3126 (Jietonda SA316).
Compared with the triazine ring in TGIC, the benzene ring and TGIC in the mixture of the mixture have decreased heat resistance, so the resistance performance is not as superior as TGIC.
As we all know, trimellitic three glycidyl ester of formic acid is a kind of liquid epoxy resin, in order to make it into a solid and easy to use, Huntsman and its solid terephthalic acid two glycidyl ester compound to be "frozen" gained a solid solution.
But the "frozen" is the stability of the body, under external force such as extrusion or heat up to "flow" and resulting in a decline in the speed of the material viscosity caused out of difficulties, so need good extrusion equipment, sometimes need to repeatedly extrusion to conform to the requirements; On the other hand, it is obvious that the storage stability of the PT910 system powder coating has a problem, so the specially designed polyester resin [high Tg] is now used to make up for it.
It has been found that even the use of extremely measures PT910 system powder coatings can be difficult to eliminate, and it seems to be only in the way of dry mixing, so it is further restricted in its application.
As for PT912, Huntsman is new PT910 modified products, 60% 60% terephthalic acid is believed to be two glycidyl ester and trimellitic three glycidyl ester of formic acid mixture, its main purpose is to further improve the functionality and reactivity and developed.
Due to the system in the process of production, storage and application, there are some shortcomings, thus did not succeed in the global scope, but because the system of ecological toxicity is lower, it is only in Europe and North America, there are still some application, but the application has not been reported in China.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Uses:
Pt910/912 is a mixture crosslinking agent of polyacid glycolide and diglycolic acid in the development of Huntsman.
Compared with TGIC, this mixture of crosslinking agent eliminates its ecological toxicity, but it still has certain contact toxicity and severe irritation. Due to the decline of the functional degree, the reaction activity is lower than that of TGIC, which needs to be added to the promoter such as DT3126 (Jietonda SA316).
Compared with the triazine ring in TGIC, the benzene ring and TGIC in the mixture of the mixture have decreased heat resistance, so the resistance performance is not as superior as TGIC.
As we all know, trimellitic three glycidyl ester of formic acid is a kind of liquid epoxy resin, in order to make it into a solid and easy to use, Huntsman and its solid terephthalic acid two glycidyl ester compound to be "frozen" gained a solid solution.
But the "frozen" is the stability of the body, under external force such as extrusion or heat up to "flow" and resulting in a decline in the speed of the material viscosity caused out of difficulties, so need good extrusion equipment, sometimes need to repeatedly extrusion to conform to the requirements; On the other hand, it is obvious that the storage stability of the PT910 system powder coating has a problem, so the specially designed polyester resin [high Tg] is now used to make up for it.
It has been found that even the use of extremely measures PT910 system powder coatings can be difficult to eliminate, and it seems to be only in the way of dry mixing, so it is further restricted in its application.
As for PT912, Huntsman is new PT910 modified products, 60% 60% terephthalic acid is believed to be two glycidyl ester and trimellitic three glycidyl ester of formic acid mixture, its main purpose is to further improve the functionality and reactivity and developed.
Due to the system in the process of production, storage and application, there are some shortcomings, thus did not succeed in the global scope, but because the system of ecological toxicity is lower, it is only in Europe and North America, there are still some application, but the application has not been reported in China.
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.
Modified polyethylene wax can improve the abrasion resistance, but it is not recommended as an extender. Polyfluorinated compounds (polytetrafluoroethylene and polyethylene wax mixtures) not only can be used as a lubricating agent, but also can improve the performance of the scratches according to the type of polyethylene. The softer the polyethylene wax, the lower the inherent slip, the better the anti-scratch performance. Conversely, the higher the hardness of polyethylene wax, the higher the inherent slip, but the lower the friction coefficient, which means the scratch performance is not good.
Fischer-tropsch wax is a molecular type of straight-chain saturated hydrocarbons from C52H106 to C56H114. It is obtained when the carbon monoxide hydrogenation is obtained, and it can be improved when the addition amount is < 1%. A mixture of Fischer Tropsch wax and polytetrafluoroethylene can be used when the solvent resistance of the film is required.
Fischer-tropsch wax can be considered as the wax of the high melting point, because the molecular weight is low, so it is better lubricity than the (modified) polyethylene, which is used when the resistance to nail damage is stronger.
The low molecular weight hydroxy silicone resin is also sometimes used to improve the performance of the scratches, with a maximum of 0.5 per cent.
The MDI crosslinking agent, which is the main enclosure of epsilon - caprolactam, was selected to improve the penetration and crosslinking temperature of the final cathodic electrophoretic coating.
Raw material of crosslinking agent for cathode electrophoretic coating: MDI; Epsilon - caprolactam; Dibutyltin dilaurate; Methyl isobutyl ketone; Ethylene glycol ether, Ethylene glycol butyl ether; Polyether 204; Polyether 210; Additives.
The crosslinking agent is prepared by sealing agent. In clean glass beaker, according to the proportion of table 1, add the relevant raw material separately, and stir evenly at normal temperature, set aside. When the occlusive B and C are prepared, if there is an epsilon - caprolactam crystal after stirring, it can be stirred and heated until there is no visible crystal granule. But heat up to be able to dissolve, not too high.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Modified polyethylene wax can improve the abrasion resistance, but it is not recommended as an extender. Polyfluorinated compounds (polytetrafluoroethylene and polyethylene wax mixtures) not only can be used as a lubricating agent, but also can improve the performance of the scratches according to the type of polyethylene. The softer the polyethylene wax, the lower the inherent slip, the better the anti-scratch performance. Conversely, the higher the hardness of polyethylene wax, the higher the inherent slip, but the lower the friction coefficient, which means the scratch performance is not good.
Fischer-tropsch wax is a molecular type of straight-chain saturated hydrocarbons from C52H106 to C56H114. It is obtained when the carbon monoxide hydrogenation is obtained, and it can be improved when the addition amount is < 1%. A mixture of Fischer Tropsch wax and polytetrafluoroethylene can be used when the solvent resistance of the film is required.
Fischer-tropsch wax can be considered as the wax of the high melting point, because the molecular weight is low, so it is better lubricity than the (modified) polyethylene, which is used when the resistance to nail damage is stronger.
The low molecular weight hydroxy silicone resin is also sometimes used to improve the performance of the scratches, with a maximum of 0.5 per cent.
The MDI crosslinking agent, which is the main enclosure of epsilon - caprolactam, was selected to improve the penetration and crosslinking temperature of the final cathodic electrophoretic coating.
Raw material of crosslinking agent for cathode electrophoretic coating: MDI; Epsilon - caprolactam; Dibutyltin dilaurate; Methyl isobutyl ketone; Ethylene glycol ether, Ethylene glycol butyl ether; Polyether 204; Polyether 210; Additives.
The crosslinking agent is prepared by sealing agent. In clean glass beaker, according to the proportion of table 1, add the relevant raw material separately, and stir evenly at normal temperature, set aside. When the occlusive B and C are prepared, if there is an epsilon - caprolactam crystal after stirring, it can be stirred and heated until there is no visible crystal granule. But heat up to be able to dissolve, not too high.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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