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Cardanol Resin

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Cardanol
Resin

Cardanol based resins offers an outstanding resistance to softening action of mineral oils and high resistance to acids & alkalis, antimicrobial property and insect resistance. Cardanol based resins offers an outstanding resistance to softening action of mineral oils and high resistance to acids & alkalis, antimicrobial property and insect resistance. Novolac and Resol Resins : Cardanol is very suitable for manufacturing both Novolac and Resol resins

When used with acid catalyst and with Cardanol to formaldehyde mole ratio in the range of 1:0.6 to 1:0.8 , Novolac resins are yielde. When used with alkaline catalyst and with Cardanol to formaldehyde mole ratio in the range of 1:1.25 to 1:1.50 , Resol resins are yielded Oil and Alcohol soluble resins : Normally the resins based on Cardanol are oil soluble. It is however, possible to manufacture alcohol soluble resins also if the reaction is arrested at the proper stage. Resins based on Cardanol and phenol in the ratios of 1:3 are also alcohol soluble

Application

  • The Cardanol based resins have good compatibility with other synthetic resins such as alkyds, epoxies chlorinated rubber, phenolic etc., and can serve as raw material for variety of paints.
  • Epoxy–cardanol resins developed using epichlorohydrin, bisphenol-A and cardanol, exhibits better properties as compared to epoxy resin in terms of increase in tensile strength, elongation, bond with steel and lowering of water vapor transmission of the film. The improvement in these properties indicated that the paints based on modified resin would be more durable than the epoxy based paints.
  • The anticorrosive properties of epoxy–cardanol resin based paints are superior to that of the paints formulated with the unmodified epoxy resin. Micaceous iron oxide based paints in epoxy–cardanol resin showed the best performance followed by zinc phosphate based paints.
  • The Cardanol based resins are used to achieve required gloss, flexibility as well as good mechanical strength, quick drying ability, rust and corrosion inhibiting property, excellent resistance to water, acid, alkali and other chemicals and many such properties for Anti-Corrosive Properties