Cashew phenol popularly know as Cardanol or Card-Phenol manufactured from cashew nut shell liquid (CNSL). It’s a monohydroxyl phenol having a long hydrocarbon chain (C15H27) in a meta position. The components of commercial Cardanol different in the degree of unsaturation Of the side chain but for the practical purposes it can be represented by the following formula: C6H4(OH)-(CH2)7-CH=CH-CH2-CH=CH(CH2)2 -CH3 Property: A light pale Brown/yellow liquid manufactured from Cashew Nut Shell Liquid Also know as cashew phenol The unique molecular structure of Cardanol, especially unsaturation of long Hydrocarbon said chain, makes the cross linking easy on Polymerization Besides the side chain imparting hydrophobic nature to the polymer, its coating is water repellent and weather resistant.
Cardanol based resins posses an outstanding resistance to softening action of mineral oil and high resistance to acids alkalies, antimicrobial property termite and insect resistance etc. Contributes to improved flexibility, good drying after banking, high electric insulation properties and thermal stability. Amenability to chemical modification to effect desirable changes so as to get specific properties for making tailor-made polymers of high value, thus the structural changes could be effected at the hydroxyl group, on the aromatic ring and on the side chain. These properties make Cardanol an effective substitute for the petroleum-based phenol.
Density @ 300C : 0.9275 – 0.9350
Viscosity @ 250C (cps) : 40 – 60
Lodine value : 210 -280
Ash content : Negotiable
Volatiles losses: 0.5 – 2%
Acid value : 2 – 5%.
The products obtained from CARDANOL have many advantages over these manufactured from other substituted phenols. It is therefore widely used in the manufacture of Nevolac & Resol Resins, Oil Soluble Resins, Lamination, Surface coating & paints, Electrical Insulating, Varnishes, Brake lining, clutch facings, Lacquers, Pesticides, Rubber compounding, Adhesives, Wax substitutes, Mineral oil additives, Azo Dyes, etc