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Cardanol
Cardanol
Cardanol
Cardanol
Cardanol
Cardanol
Cardanol
Views: 2847 - Post date: 16/09/2019
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Cardanol
Cardanol is a naturally occurring Phenol manufactured from Cashew Nut Shell Liquid. It is a monohydroxyl Phenol having a long hydrocarbon Chain ( C15 H27 ) in the meta position.
Content
The products obtained from Cardanol have many advantages over those manufactured from other substituted Phenols.
The Components of commercial Cardanol differ in the degree of unsaturation of the side chain but for all the practical purposes it can be represented by following formula.
C6H4(OH) – (CH2)7 – CH = CH – CH2 – CH = CH(CH2)2 – CH3
The average unsaturation of the about two double bonds in the side chain of the Cardonal molecules makes cross linking easy and give a satisfactory gradual drying and baking properties to paints prepared from it. Because of its peculiar Structure Cardanol varnishes have high electrical insulation, greater resistance to water, Chemicals and also good flexibility. The long hydrocarbon side chain imparts to Cardanol aldehyde condensate greater solubility in drying Oils such as linseed DCO, or tung Oil and aliphatic hydrocarbons
Cardanol can be substituted by 30% in phenolic resins used for phenol bonded resins for plywood and lamination industries.
Water soluble PCF resin(phenol, cardanol pharmaldehyde resin): We develop PCF resin by substituting 30% cardanol in phenolic resins. The resins will give additional property of antifungus and antithermic when used in plywood industries. In lamination industries it gives additional advantage in non-edge cracking and also cost saving.
The Specification of Our Product given below
1. Specification for Cardanol (Single Distilled):(minimum 90% Purity)
Viscosity at 30°C : 50 – 55 cps (Brooke Field)
Moisture : Negligible
Ash Content : Negligible
Colour : 3 – 4 (after 30 days 7-8 )(Freshly Distilled)
Specific Gravity at 30°C : 0.92-0.93
pH : 7.8
Iodine Value : Minimum 275(By Wig’s Method)
2. Specification for Cardanol (Double Distilled):(minimum 94% Purity)
Colour : Pale Straw
Viscosity at 30°c : 45 – 50 cps (Brooke Field)
Ash Content : Negligible
Moisture : Negligible
Specific Gravity at 30°C : 0.92 – 0.925
Iodine Value : Minimum 275(By Wig’s Method)
Colour Gardener : 2 – 3(Freshly Distilled) (colour may 6-7 after 30 days)
Applications of Cardanol
Oil Soluble Resins
The meta substitution and the long hydrocarbon chain in its molecule makes the resins prepared with Cardanol, highly soluble in oils and imparts superior properties such as high electric insulation and resistance against chemicals to its films. It is to manufacture both solid and semi solid resole or novolac type of resins depending upon the nature of catalyst and the aldehyde compound.
Cardanol resin varnishes have good electrical insulating properties and resistance against water and chemicals. They give superior quality Stamping Varnishes. Because of their high insulation and dielectric losses, these varnishes are preferred to compositions based on usual Phenol such as Cresol or Substituted phenols.
Surface Coatings and Paints
Cardanol resin Varnishes in addition to water and Chemical resistance have good air drying and baking properties. These compositions are suitable for wood finishes, food can lacquers tax tile bobbins and high quality paints. Stoving paints can be prepared which could be baked at 60°C. The Cardanol based resins have good compatibility with other synthetic resins such as alkydes, epoxies chlorinated rubber, Phenolic etc., and can serve as raw material for variety of paints.
Lamination Industry
By partly replacing the Phenol or Cresol in alcohol soluble resins used for Lamination one could prepare resins which imparts greater flexibility resistance to Chemical and water, and superior electrical insulation to the lamination sheets
Adhesives
An excellent quality of Friction dust could be prepared from Cardanol which finds use brake linings and Clutch facings.
Technical Service
In case you require any other technical information regarding our products, we can furnish the same easily, as we have got our own well equipped and developed laboratory.
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