Cardanol Based Phenolic Resin derived from Cashew Nut Shell Liquid (CNSL) is a specialized phenolic resin featuring a high content of anacardnic acid extracted as card phenol. This resin, marketed as SILEX 70, is a golden yellow liquid engineered for enhanced performance in synthetic hard gloss, semidarker, and darker enamel paints, insulating varnishes, and aluminum mediums. The resin exhibits outstanding film-forming properties including high gloss retention, excellent mechanical strength, and superb resistance to water, acids, alkalis, and a variety of chemicals. It also offers antibacterial and insecticidal effects, making it an excellent choice for marine and industrial coatings. Compatibility with traditional alkyds, epoxies, and oils like linseed, DCO, and soya ensures flexibility in formulation. Soluble in common aromatic and aliphatic hydrocarbons such as mineral turpentine oil and xylene, this resin supports paint manufacturers in producing economical, high-quality coatings with rapid drying and corrosion protection. Recommended driers include lead, cobalt, and manganese octoates to optimize curing and film durability.
Key Features
| Features | Description |
|---|---|
| Source Material | Cashew Nut Shell Liquid (CNSL) containing Anacardnic Acid |
| Product Name | SILEX 70 - Cardanol Based Phenolic Resin |
| Appearance | Golden Yellow Liquid |
| Applications | Synthetic Hard Gloss Semi Darker & Darker Enamel Paints, Insulating Varnishes, Aluminum Mediums, Marine Paints |
| Chemical Resistance | Excellent resistance to water, acids, alkalis, and various chemicals |
| Mechanical Properties | High gloss, good hardness, flexibility, and mechanical strength |
| Compatibility | Compatible with alkyds, epoxies, drying oils (Linseed, DCO, Soya) |
| Solubility | Soluble in mineral turpentine oil, xylene, toluene, solvent naphtha |
| Drying | Fast drying with recommended driers - Lead, Cobalt, Manganese octoates |
| Additional Properties | Antibacterial, insecticidal, anti-rust and corrosion inhibiting |
| Attributes | Description |
|---|---|
| Chemical Base | Phenolic resin polymerized from Cardanol |
| Physical State | Liquid |
| Colour | Golden Yellow |
| Viscosity | Medium (specific values depend on batch) |
| pH | Not typically specified for resin |
| Solubility | Aromatic & aliphatic hydrocarbons like MTO, MS, Xylene, Toluene |
| Recommended Driers | 1% Lead Octoate, 0.5% Cobalt Octoate, 1.5% Manganese Octoate |
| Compatibility | Alkyds, Epoxies, drying oils |
| Usage Temperature Range | Typically ambient to moderate elevated temperatures for drying |
| Storage | Store in cool, dry place away from direct sunlight |
*Disclaimer: The above description has been AI-generated and has not been audited or verified for accuracy. It is recommended to verify product details independently before making any purchasing decisions.
Yes, although SILEX 70 is primarily suited for semidarker and darker enamel paints, it can be blended with conventional alkyds and epoxies to manufacture lighter color shades effectively.
SILEX 70 is soluble in most aromatic and aliphatic hydrocarbons including Mineral Turpentine Oil (MTO), Mineral Spirits (MS), Xylene, Toluene, and Solvent Naphtha.
Yes, these resins are fully compatible with all drying oils including Linseed Oil, DCO, and Soya Oil in any proportion.
The recommended driers are 1% lead octoate, 0.5% cobalt octoate, and 1.5% manganese octoate, which help in achieving high gloss, hardness, and water/chemical resistance.
Yes, Cardanol based phenolic resin exhibits excellent resistance to the softening effects of mineral oils, as well as superior resistance to acids and alkalis.
The resin’s antibacterial and insecticidal properties help improve durability of coatings in marine and industrial environments, reducing microbial degradation and insect related damages.
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.
