News Details
New type of coating crosslinking agent
2017-4-20 13:16:21
New type of coating crosslinking agent,The crosslinking agent made of coating with high flexibility and impact resistance, and the drying rate is low, but once the crosslinking, coating showed good resistance to water, is the ideal anti-corrosive primer. The commonly used coupling agent for epoxy resin and dimer fatty acid.
The use of these new crosslinking agent technology, make Ⅰ type epoxy coatings in aspects such as corrosion resistance, quick drying had the very big enhancement, has been used in metal anti-corrosion coatings.
Its Ⅱ type water-borne epoxy crosslinking agent for modification and Ⅰ waterborne epoxy crosslinking agent have similarities, early used solvent epoxy crosslinking agent such as crosslinking agent, polyamide, had tried to use the polyamide nonionic emulsifier emulsion dispersed in water, then had used modified polyamide as Ⅱ type water-borne epoxy crosslinking agent, it is the polyamide resin with acetic acid, phosphoric acid or hydrochloric acid ammonium salt reaction, then dissolved in ethanol solvent assisted in water.
The first commercial waterborne epoxy crosslinking agent is Casmide350 Ⅱ type, it is a mixture of modified polyamide resin and hydrophilic solvent solution. But using the crosslinking agent for coating performance is not ideal.
Currently used Ⅱ type water-borne epoxy crosslinking agent is mainly used with hydrophilic segments of fatty amine polyoxyethylene chain or glycidyl ether epoxy resin or ethylene polyamine - amine epoxy crosslinking agent was response or reaction with dimer acid generated polyamide kind of crosslinking agent, it USES polyoxyethylene chain segment of hydrophilic that crosslinking agent can stable dispersion in water, and using epoxy resin as chain extender can improve the compatibility of crosslinking agent and epoxy resin.
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.
As Klein with polyoxyethylene first two glycidyl ether with bisphenol A epoxy resin, epoxy resin synthesized you repose with polyethylene oxide with it propylene diamine and isophorone diamine reaction - amine epoxy crosslinking agent. Also useful bisphenol A epoxy resin, polyoxyethylene glycidyl ether and bisphenol A epoxy resin was prepared under the action of A catalyst dispersion, and then react with ethylene polyamine more amino epoxy amine adduct get end, with A single type epoxy compounds end namely get Ⅱ waterborne epoxy crosslinking agent.
While Elmore and others to more ethylene amine and epoxy resin (EP1001) reaction end amino amine epoxy adduct reacts with end carboxyl polyether alcohol made an amide amine compounds, with single epoxy compound sealing and finally get a amide, amine crosslinking agent. Others will end carboxyl reaction polyether alcohol and fatty amine to produce the amide amine and epoxy resin reaction generated end epoxy compound reacts with fatty amine, with single epoxy compounds end finally.
There are also some Ⅱ waterborne epoxy crosslinking agent is one type of aromatic amine modified products. Such as: Miyamoto et with m-phenylene dimethylamine and epichlorohydrin under the effect of NaOH to generate amine epoxy adduct, used as waterborne epoxy crosslinking agent, excellent performance, the products have been industrialization, goods generation number G - 328.
On the basis of the G - 328 developed a new type of waterborne epoxy crosslinking agent, has more excellent performance, it is the G - 328 with binary carboxylic acid reaction to generate an amide amine crosslinking agent.
And modified alicyclic amine was used as waterborne epoxy crosslinking agent, as Stark of an alicyclic amine PACM (its structural formula for NH2 NH2) was modified, first the fat amine with end carboxyl polyether glycol reacts amide amine and epoxy resin reaction end epoxy compound crosslinking agent was finally with PACM reaction.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
The use of these new crosslinking agent technology, make Ⅰ type epoxy coatings in aspects such as corrosion resistance, quick drying had the very big enhancement, has been used in metal anti-corrosion coatings.
Its Ⅱ type water-borne epoxy crosslinking agent for modification and Ⅰ waterborne epoxy crosslinking agent have similarities, early used solvent epoxy crosslinking agent such as crosslinking agent, polyamide, had tried to use the polyamide nonionic emulsifier emulsion dispersed in water, then had used modified polyamide as Ⅱ type water-borne epoxy crosslinking agent, it is the polyamide resin with acetic acid, phosphoric acid or hydrochloric acid ammonium salt reaction, then dissolved in ethanol solvent assisted in water.
The first commercial waterborne epoxy crosslinking agent is Casmide350 Ⅱ type, it is a mixture of modified polyamide resin and hydrophilic solvent solution. But using the crosslinking agent for coating performance is not ideal.
Currently used Ⅱ type water-borne epoxy crosslinking agent is mainly used with hydrophilic segments of fatty amine polyoxyethylene chain or glycidyl ether epoxy resin or ethylene polyamine - amine epoxy crosslinking agent was response or reaction with dimer acid generated polyamide kind of crosslinking agent, it USES polyoxyethylene chain segment of hydrophilic that crosslinking agent can stable dispersion in water, and using epoxy resin as chain extender can improve the compatibility of crosslinking agent and epoxy resin.
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.
As Klein with polyoxyethylene first two glycidyl ether with bisphenol A epoxy resin, epoxy resin synthesized you repose with polyethylene oxide with it propylene diamine and isophorone diamine reaction - amine epoxy crosslinking agent. Also useful bisphenol A epoxy resin, polyoxyethylene glycidyl ether and bisphenol A epoxy resin was prepared under the action of A catalyst dispersion, and then react with ethylene polyamine more amino epoxy amine adduct get end, with A single type epoxy compounds end namely get Ⅱ waterborne epoxy crosslinking agent.
While Elmore and others to more ethylene amine and epoxy resin (EP1001) reaction end amino amine epoxy adduct reacts with end carboxyl polyether alcohol made an amide amine compounds, with single epoxy compound sealing and finally get a amide, amine crosslinking agent. Others will end carboxyl reaction polyether alcohol and fatty amine to produce the amide amine and epoxy resin reaction generated end epoxy compound reacts with fatty amine, with single epoxy compounds end finally.
There are also some Ⅱ waterborne epoxy crosslinking agent is one type of aromatic amine modified products. Such as: Miyamoto et with m-phenylene dimethylamine and epichlorohydrin under the effect of NaOH to generate amine epoxy adduct, used as waterborne epoxy crosslinking agent, excellent performance, the products have been industrialization, goods generation number G - 328.
On the basis of the G - 328 developed a new type of waterborne epoxy crosslinking agent, has more excellent performance, it is the G - 328 with binary carboxylic acid reaction to generate an amide amine crosslinking agent.
And modified alicyclic amine was used as waterborne epoxy crosslinking agent, as Stark of an alicyclic amine PACM (its structural formula for NH2 NH2) was modified, first the fat amine with end carboxyl polyether glycol reacts amide amine and epoxy resin reaction end epoxy compound crosslinking agent was finally with PACM reaction.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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