CHLORIDE PARAFFIN WAX

Flame Resistance: Chlorinated paraffin offers a low-cost, flame-retardant solution for a wide range of applications. When exposed to high temperatures, CP releases a substantial amount of HCI. In its

Process of Chlorinated Paraffin

The chlorination process is continued till the desired specific gravity / chlorine content in in reaction mass is achieved. Once chlorination is completed, reaction mass is cooled down and transferred to degasser. Dry air is purged in reaction mass in degasser to strip off residual gas of chlorine / HCL. Reaction mass. Stabilizer is added to finished product for improving the stability pf product and product is transferred to storage tanks or filled in drums for sales.  

Chlorinated paraffin contains 42-68% chlorine is largely inert and almost insoluble in water. Most commercial chlorinated paraffin product are liquid and range from relatively low to very high viscosity.

Currently, over 200 CP formulations are in use for a wide range of industrial applications, such as flame-retardants and plasticizers, as additives in metal working fluids, in sealants, paints, adhesives, textiles, leather fat and coatings etc.

REACTION CHEMISTRY

Chlorinated Paraffin  (Typical Example for paraffin having carbon C-14)

C₁₄H₃₀+6Cl₂ ®  C₁₄H₂₄Cl₆  + 6HCl

PARAFFIN + CHLORINE® CHLORINATED PARAFFIN-52%+ HYDROCHLORIC ACID

HCl Gas Scrubbing

HCl + H₂O ® HCl.H₂O  (30-32%)

Excess Chlorine Gas Scrubbing

2NaOH + Cl₂  ® NaOCl+NaCl +H₂O    

(Caustic + Chlorine = Sodium hypo Chlorite (10-12% Solution

Major application of Chlorinated paraffin

1. Flame Resistance: Chlorinated paraffin offers a low-cost, flame-retardant solution for a wide range of applications. When exposed to high temperatures, CP releases a substantial amount of HCI. In its condensed phase, HCI contributes to the formation of char. In its vapor phase, it can function as a flame poison. Additionally, the decomposed CP forms a char-like residue, which also acts as a flame retardant. Because of its flame-retardant properties, chlorinated paraffin is ideal for use in rubber, plastics, sealants, industrial coatings, adhesives, fabric or any application where fire resistance is essential. For example, many large manufacturers of upholstered furniture use CP as an additive flame retardant. This allows them to meet even the most stringent flammability requirements.

 2. Low-temperature Flexibility: Chlorinated paraffin ensures greater flexibility at lower temperatures than conventional plasticizers. As a result, it is often added to products that require a high flexibility in colder weather, such as some types of flooring, wire and cable insulation, and garden hose. In the production of plastics, CP is added to increase the elasticity of materials like PVC.

3. Stain Resistance: Another reason why chlorinated paraffin may be selected is its improved stain resistance. This is an important consideration in applications where a certain aesthetic is desired, including flooring, wall coverings and upholstery. In comparison, sulfurized additives can stain metals and cause rancidity.

4. Resistance to Aqueous Detergent Extraction: Many manufacturers use water-based detergents/additives to clean their metal parts. While this cleaning process eliminates contaminants like grease and oil, it can also remove plasticizers that are required for an effective formulation. Chlorinated paraffin, however, releases hydrochloric acid at elevated temperatures, which then bonds with the metal surface and forms a thin yet solid film of lubricant.

5. Chemical Resistance: Chlorinated paraffin offers improved resistance to both water and chemicals. For this reason, it is often added to paints, sealants and coatings. It is especially effective in paints used for traffic markings and marine applications, such as coatings for industrial flooring, vessels, swimming pools, etc.

6. Plastisol Viscosity Stability: Chlorinated paraffin serves as a viscosity regulator for plastisol. This is especially critical in the manufacturing of PVC plastisol, which must maintain a stable viscosity for an extended period of time (during dip and rotational molding). For improved stability, it is recommended using CP with a chlorine content of 30%-40%.

4.0 Finished Product Specifications

Specification for Chlorinated paraffin depends on paraffin grade used. Below is typical specifications of paraffin containing carbon chain above C14-C17. For 52% grade of chlorinated paraffin, typical Raw material consumption norms are derived as bellow: