News Details
Amino resin powder coating crosslinking agent
2017-8-30 12:07:14
Amino resin powder coating crosslinking agent
Since 1970, the presence of the TGIC/polyester system has eliminated the use of amino resins as cross-linking agents for polyester powder coatings only in a very short period of time.
Amino resins crosslinking agent provides outstanding cost performance, low toxicity, and relatively small health hazard. There is a good reason to include amino resins crosslinking agents in the ranks of crosslinking agents for powder coatings, at least for the powder coating researchers to consider the possibility of using them.
Crosslinking agent can be used for powder coating production of the main raw material, melamine, benzene generation of melamine and urea and formaldehyde condensation, also can use toluene sulfonamide modified HMMM resin for powder coating in effective crosslinking agent of hydroxyl polyester resin.
The crosslinking film has excellent solvent resistance and impact resistance. The disadvantage is that the methanol is released when drying. The tetramethylmethyl-glycarbamide (Powderlink1174 of Cytec) is another potential crosslinking agent for powder coatings. The TMMGU is solid at room temperature and the melting point is about 90.
The coating with ganourea resin has excellent mechanical properties, corrosion resistance, moisture resistance and excellent accelerated aging. In the baking process, the formaldehyde content of ganourea formaldehyde resin is much lower than that of the melamine formaldehyde.
Compared with melamine resin, the glycolic formaldehyde resin needs stronger acid catalyst to accelerate crosslinking reaction. Another disadvantage of Powderlink1174 is that it significantly reduces the Tg of powder, resulting in a decrease in storage stability.
Amino resin is made up of amino compounds containing such as urea, melamine, melamine and formaldehyde and benzene generation or alcohols by the polycondensation of the floorboard of the resin, urea-formaldehyde resin (UF) resin has important, melamine formaldehyde resin (MF) and polyamide polyamine epichlorohydrin (PAE), etc.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Uses:
Since 1970, the presence of the TGIC/polyester system has eliminated the use of amino resins as cross-linking agents for polyester powder coatings only in a very short period of time.
Amino resins crosslinking agent provides outstanding cost performance, low toxicity, and relatively small health hazard. There is a good reason to include amino resins crosslinking agents in the ranks of crosslinking agents for powder coatings, at least for the powder coating researchers to consider the possibility of using them.
Crosslinking agent can be used for powder coating production of the main raw material, melamine, benzene generation of melamine and urea and formaldehyde condensation, also can use toluene sulfonamide modified HMMM resin for powder coating in effective crosslinking agent of hydroxyl polyester resin.
The crosslinking film has excellent solvent resistance and impact resistance. The disadvantage is that the methanol is released when drying. The tetramethylmethyl-glycarbamide (Powderlink1174 of Cytec) is another potential crosslinking agent for powder coatings. The TMMGU is solid at room temperature and the melting point is about 90.
The coating with ganourea resin has excellent mechanical properties, corrosion resistance, moisture resistance and excellent accelerated aging. In the baking process, the formaldehyde content of ganourea formaldehyde resin is much lower than that of the melamine formaldehyde.
Compared with melamine resin, the glycolic formaldehyde resin needs stronger acid catalyst to accelerate crosslinking reaction. Another disadvantage of Powderlink1174 is that it significantly reduces the Tg of powder, resulting in a decrease in storage stability.
Amino resin is made up of amino compounds containing such as urea, melamine, melamine and formaldehyde and benzene generation or alcohols by the polycondensation of the floorboard of the resin, urea-formaldehyde resin (UF) resin has important, melamine formaldehyde resin (MF) and polyamide polyamine epichlorohydrin (PAE), etc.
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.
Coating with amino resin is a kind of multifunctional compounds, compounds containing (NH2) functional groups and aldehyde (mainly formaldehyde) addition condensation, then generate the hydroxymethyl (- CH2OH) and aliphatic alcohol a yuan of etherification or all etherification and get product. According to the different amino compounds used, it can be divided into four categories: urea formaldehyde resin, melamine resin, benzoic melamine resin, copolymerization resin.
If as a film if alone with amino resin, paint film was too hard, and crisp, adhesion to the substrate is poor, so often and can be compatible with amino resin, and other types of resin by heating can be crosslinked share, he can be used as oil modified alkyd resin, unsaturated polyester resin, acrylic resin, epoxy resin, epoxy ester, such as the crosslinking agent, such as matching, 3 d mesh structure is obtained by heating to the paint film with high toughness, according to the use of amino resin and other resin changes of matching, the film also each has its own characteristics.
With amino resin as cross-linking agent in the paint film with excellent gloss and colour retention, hardness, drug resistance, water resistance and corrosion resistance, etc., as a result, the amino resin as cross-linking agent of coating is widely used with the automobile, agricultural machinery, furniture, household appliances and metal coating and other industrial coatings. Amino resins can be baked at the base temperature or crosslinking at room temperature when the acid catalyst exists, which can be used for reactive two-liquid wood coating and automotive repair coatings.
Crosslinking agent can also be called the hardener, because some of the coated paper needs to be wet and pressure, offset printing, place outdoor and so on the condition of the water contact, so coating drying must be moisture-resistant. Usually synthetic polymer latex has good water resistance, but starch, polyvinyl alcohol, such as protein, sodium alginate natural coating adhesive and water resistance of surface sizing agent is very poor, need to use the crosslinking agent to enhance the capacity of coated paper resistant to wet rubbing, especially for offset printing, resistant to wet rubbing is a very important indicator.
Amino resin is made up of amino compounds containing such as urea, melamine, melamine and formaldehyde and benzene generation or alcohols by the polycondensation of the floorboard of the resin, urea-formaldehyde resin (UF) resin has important, melamine formaldehyde resin (MF) and polyamide polyamine epichlorohydrin (PAE), etc.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Coating with amino resin is a kind of multifunctional compounds, compounds containing (NH2) functional groups and aldehyde (mainly formaldehyde) addition condensation, then generate the hydroxymethyl (- CH2OH) and aliphatic alcohol a yuan of etherification or all etherification and get product. According to the different amino compounds used, it can be divided into four categories: urea formaldehyde resin, melamine resin, benzoic melamine resin, copolymerization resin.
If as a film if alone with amino resin, paint film was too hard, and crisp, adhesion to the substrate is poor, so often and can be compatible with amino resin, and other types of resin by heating can be crosslinked share, he can be used as oil modified alkyd resin, unsaturated polyester resin, acrylic resin, epoxy resin, epoxy ester, such as the crosslinking agent, such as matching, 3 d mesh structure is obtained by heating to the paint film with high toughness, according to the use of amino resin and other resin changes of matching, the film also each has its own characteristics.
With amino resin as cross-linking agent in the paint film with excellent gloss and colour retention, hardness, drug resistance, water resistance and corrosion resistance, etc., as a result, the amino resin as cross-linking agent of coating is widely used with the automobile, agricultural machinery, furniture, household appliances and metal coating and other industrial coatings. Amino resins can be baked at the base temperature or crosslinking at room temperature when the acid catalyst exists, which can be used for reactive two-liquid wood coating and automotive repair coatings.
Crosslinking agent can also be called the hardener, because some of the coated paper needs to be wet and pressure, offset printing, place outdoor and so on the condition of the water contact, so coating drying must be moisture-resistant. Usually synthetic polymer latex has good water resistance, but starch, polyvinyl alcohol, such as protein, sodium alginate natural coating adhesive and water resistance of surface sizing agent is very poor, need to use the crosslinking agent to enhance the capacity of coated paper resistant to wet rubbing, especially for offset printing, resistant to wet rubbing is a very important indicator.
Amino resin is made up of amino compounds containing such as urea, melamine, melamine and formaldehyde and benzene generation or alcohols by the polycondensation of the floorboard of the resin, urea-formaldehyde resin (UF) resin has important, melamine formaldehyde resin (MF) and polyamide polyamine epichlorohydrin (PAE), etc.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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