Chlorinated paraffins (CPs) are chlorinated derivatives of paraffin hydrocarbons. Their properties vary with chlorine content, and they are characterized by low volatility, flame retardancy, electrical insulation, and low cost. They play essential roles in industry as plasticizers, flame retardants, lubricants, and anti-corrosion agents, making them indispensable basic chemicals.
I. Plastics Industry: Core Application AreaThe plastics industry is the primary application field, especially in polyvinyl chloride (PVC) products. Chlorinated Paraffin-52# is the most widely used due to its good compatibility. It can partially replace phthalate-based primary plasticizers, reducing costs and enhancing PVC product performance. In flexible PVC products such as artificial leather and wire/cable sheathing, it inhibits plasticizer volatilization, improves flame retardancy and electrical insulation, making it suitable for high-end applications like new energy vehicle wiring harnesses.
II. Rubber, Coatings & Inks: Performance ModifiersIn rubber products, chlorinated paraffins provide both flame retardancy and plasticizing functions, compatible with various rubber formulations. They are used in conveyor belts, seals, etc., to improve fire resistance and mechanical properties while reducing aging and cracking.In coatings, they serve as synergistic flame retardants, compounding with other substances to reduce smoke density during combustion, suitable for fireproof and anti-corrosion applications in steel structures, ships, etc. Dedicated grades for water-based coatings have also been developed.In printing inks, they enhance leveling and printing effects, meeting diverse packaging and printing needs.
III. Lubricants & Metalworking: Extreme Pressure & Anti-wear ProtectionChlorinated paraffins demonstrate excellent extreme pressure and anti-wear properties in lubricants. They form dense adsorption films under high temperatures, extending oil service life, and are used in gear oils and wind turbine gearbox lubrication.In metalworking, as cutting fluid additives, they extend tool life and improve machining precision. They also enhance the low-temperature fluidity of fuel oils, suitable for operations in cold regions.
IV. Other Fields & Environmental NotesIn the textile industry, they are used as waterproofing and flame-retardant finishing agents to add value to fabrics. They also improve the performance of adhesives, enhancing weather resistance and flame retardancy in polyurethane coatings, plastic tracks, etc., with emerging applications in 3D printing materials.It is important to note that short-chain chlorinated paraffins are prohibited under the Stockholm Convention, while medium-chain chlorinated paraffins are listed as candidates, with some grades classified as Group 2B carcinogens. The industry is advancing technological innovations to reduce environmental impact and promote green upgrades in compliance with regulations.In the future, with the development of related industries, demand for chlorinated paraffins in specialized flame-retardant m
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