Cashew phenolic aldehyde amide epoxy hardener for four-season-general type anticorrosive paint and preparation method of cashew phenolic aldehyde amide epoxy hardener
A technology of epoxy curing agent and anti-corrosion coating, applied in anti-corrosion coating, carboxylic acid amide preparation, chemical instruments and methods, etc., to achieve the effect of high yield, strong low temperature applicability and good anti-corrosion performance
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Embodiment 1
[0032] 1. A cashew nut phenolic amide epoxy curing agent for four-season general-purpose anticorrosion coatings, which is made of the following raw materials in parts by weight: 103g of diethylenetriamine, 280g of dimer acid or 18 carbon unsaturated fatty monoacids, cashew nuts 300g of phenol: 103g of diethylenetriamine, 94g of paraformaldehyde with a purity of 96%.
[0033] 2. The preparation method of the cashew nut phenolic amide epoxy curing agent for the above-mentioned four-season general-purpose anticorrosion coating specifically comprises the following steps:
[0034] (1) First put 103g of diethylenetriamine, 280g of dimer acid or 18-carbon unsaturated fatty monoacid into a 1000mL reactor, heat it to 140oC after stirring evenly, keep it for 2 hours, then heat it to 160oC for 1 hour, then Reheat to 180oC, keep warm for 2 hours, and cool down to 80oC after the water is completely discharged;
[0035] (2) Then put 300g of cardanol and 103g of diethylenetriamine into the ...
Embodiment 2
[0040] 1, a kind of cardanol phenalkamide epoxy curing agent for four seasons universal anticorrosion coating, it is made of the raw material of following parts by weight: diethylenetriamine 103g, unsaturated fatty acid 280g of 18 carbons, cardanol 300g, two Ethylenetriamine 103g, 37% formaldehyde aqueous solution 284g.
[0041] 2, the preparation method of cashew nut phenolic amide epoxy curing agent for the above-mentioned four-season general-purpose anticorrosion coating, it may further comprise the steps:
[0042] (1) First put 103g of diethylenetriamine and 280g of 18-carbon unsaturated fatty monoacid into a 2000mL reactor, stir well, heat to 140 oC, keep it for 2 hours, then heat it to 160oC for 1 hour, and then heat it to 180oC, keep warm for 2 hours, and cool down to 80oC after the water is completely discharged;
[0043] (2) Then put 300g of cardanol and 103g of diethylenetriamine into the reaction kettle of step (1), stir well, then slowly add 284g of 37% formaldehyde...
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