Cardanol Based Phenolic Resin

INTRODUCTION: Cashew nut shell liquid contains Phenolic group called ANACARDNIC ACID. CNSL oil is distilled and Card phenol is separated. Card phenol is polymerized and modified with Alkyds, Styrene monomer and Rosin to make different grades of modified Card phenol resin. SILEX 70 is Plain Card Phenol based Phenolic Resins. They are Golden yellow in colour and are suitable for manufacturing Synthetic Hard Gloss Semi Darker & Darker Enamel Paints, Insulating Varnishes, Aluminum Medium etc., & are having outstanding Film Properties. They can be blended with any conventional Alkyds and Epoxies & can be used for making Lighter colour shades also & specially recommended for Marine Paints.

Card Phenol based resins have excellent resistance to the softening effects of mineral oils and high resistance to acids and Alkalis. They have antibacterial and insecticidal properties and good compatibility with other synthetic resins, such as alkyds, chlorinated epoxy rubber, Phenolic resins, etc. They can be used as raw materials for various paints. They are used to achieve the required gloss and flexibility, as well as having good mechanical strength, quick drying ability, rust and corrosion inhibiting properties, excellent resistance to water, acids, Alkalis and other chemicals. Cardanol-based resins are used as substitutes for alkyds in enamels and phenol in Phenolic resins.

Cardanol-based resins are used to achieve the required gloss, elasticity as well as good mechanical strength, have the ability to dry quickly, have anti-rust and corrosion inhibiting properties, excellent resistance to water, acids, Alkalis and other chemicals Used in the substitution reaction of alkyds in enamels.

COMPATIBILITY: These resins are compatible with all drying oils in all proportions like Linseed Oil, DCO, Soya etc., Their compatibility with other resins like Alkyds & Epoxies is also very good.

SOLUBILITY: SILEX 70 are soluble in most of the Aromatic & Aliphatic hydrocarbon solvents like Mineral Turpentine Oil (MTO), Mineral Spirits (MS), Xylene, Toluene, Solvent Naphtha etc.,

RECOMMENDED DRIERS: Driers added are 1% Lead, 0.5% Cobalt & 1.5% Manganese as metals in their Octoate and the varnish is left for 24 hours for ageing. These resins have very good film forming property like high gloss, better hardness and water/chemical resistance. These properties are beneficial to paint manufacturers as Card phenol resin is economical compared to conventional Alkyds. However pure Card phenol resin can be incorporated in regular paint formulation to reduce cost and adjust quality.