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Newly Developed Waterborne Phenalkamine for Corrosion Resistant Primers

Newly Developed Waterborne Phenalkamine for Corrosion Resistant Primers
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Cashew Nutshell Liquid (CNSL) is a non-edible, renewable biomaterial extracted from the honeycomb-like structure of the cashew nut. Its main component, cardanol, is produced by the decarboxylation of CNSL and it contains a highly hydrophobic aliphatic side chain. Cardanol is used in the synthesis of phenalkamines, which are widely used in marine, protective and industrial coatings applications. Historically, phenalkamines have been used in solvent systems, but recently, a new technology was developed that enables a very hydrophobic phenalkamine to be stably packaged in water. 

Product Number: 51217-083-SG
Author: Hong Xu, Fernanda Tavares, Donald C. Lawson III, Jing Hu, Anbu Natesh
Publication Date: 2017
Industries: Corrosion Monitoring and Control , Coatings
$0.00
$20.00
$20.00

Cashew Nutshell Liquid (CNSL) is a non-edible, renewable biomaterial extracted from the honeycomb-like structure of the cashew nut. Its main component, cardanol, is produced by the decarboxylation of CNSL and it contains a highly hydrophobic aliphatic side chain. Cardanol is used in the synthesis of phenalkamines, which are widely used in marine, protective and industrial coatings applications. Historically, phenalkamines have been used in solvent systems, but recently, a new technology was developed that enables a very hydrophobic phenalkamine to be stably packaged in water. The hydrophobic side chain promotes excellent corrosion protection and early water resistance matching the performance of existing solvent-based systems. The low temperature molecular mobility of cardanol-derived curing agents helps crosslink density and substrate wetting, which results in outstanding adhesion over various metal substrates. Moreover, this CNSL-based curing agent provides excellent formulation latitude. High PVC (pigment volume concentration) formulations are easily reduced with water to conventional spray viscosities, pigmentation can be done on both epoxy and amine sides, and good compatibility is achieved with solid epoxy dispersions and standard bisphenol A/F liquid epoxy resins. This paper will review the performance of this newly developed waterborne phenalkamine in zero and ultra low emissions protective and industrial coatings formulations.

Cashew Nutshell Liquid (CNSL) is a non-edible, renewable biomaterial extracted from the honeycomb-like structure of the cashew nut. Its main component, cardanol, is produced by the decarboxylation of CNSL and it contains a highly hydrophobic aliphatic side chain. Cardanol is used in the synthesis of phenalkamines, which are widely used in marine, protective and industrial coatings applications. Historically, phenalkamines have been used in solvent systems, but recently, a new technology was developed that enables a very hydrophobic phenalkamine to be stably packaged in water. The hydrophobic side chain promotes excellent corrosion protection and early water resistance matching the performance of existing solvent-based systems. The low temperature molecular mobility of cardanol-derived curing agents helps crosslink density and substrate wetting, which results in outstanding adhesion over various metal substrates. Moreover, this CNSL-based curing agent provides excellent formulation latitude. High PVC (pigment volume concentration) formulations are easily reduced with water to conventional spray viscosities, pigmentation can be done on both epoxy and amine sides, and good compatibility is achieved with solid epoxy dispersions and standard bisphenol A/F liquid epoxy resins. This paper will review the performance of this newly developed waterborne phenalkamine in zero and ultra low emissions protective and industrial coatings formulations.

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