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White Factice – Rubber Processing Additive

 
 
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White Factice – Rubber Processing Additive

White Factice is a white paste-like (solid) lubricant material formulated from vegetable oil, calcium carbonate, castor oil, and sulfur. It appears as a white solid and features excellent lubricity, film-forming ability, and thermal stability.
The product maintains stable performance under high-temperature processing conditions and is suitable for various rubber and plastic manufacturing processes.
In the rubber industry, White Factice is classified as a processing aid, with primary functions including improving mixing efficiency, reducing compound tackiness, enhancing filler dispersion, and increasing overall lubrication.
It allows rubber compounds to process more smoothly in mixing, calendaring, and extrusion operations, reducing processing resistance and improving production stability.

Chemical Composition of White Factice:
Chemical NameMolecular WeightContent (%)CAS No.
Sulfur25657704-34-9
Rapeseed Oil--608002-13-9
Calcium Carbonate10020471-34-1
Castor Oil933158001-79-4
When to Add White Factice:

White Factice is primarily used to improve processing flow and workability of rubber/plastic compounds. It is particularly suitable under the following conditions:

  • Excessive mixing viscosity or difficult compound breakdown

  • Poor dispersion of fillers (e.g. CaCO₃, talc, carbon black)

  • When lower friction and improved mixing efficiency are required

  • When better surface smoothness, film formation, or mold-release is needed

  • When partial lubrication/plasticization is desired without using volatile mineral oils

Application Industries:

White Factice is a versatile processing additive widely applied in rubber and plastic sectors, including:

  • Tires & rubber products (hose, rubber footwear, seals, soles)

  • Footwear materials (EVA, RB, PU midsoles & compound mixing)

  • Plastic processing (PVC, PE, PP lubrication-required formulas)

  • Rubber chemicals production (accelerators, activators, masterbatch)

  • Any process requiring lubrication and anti-stick functionality

Key Features of White Factice:
  • Excellent lubricity & processability — reduces friction and improves mixing efficiency

  • Good film-forming ability — produces smoother compound surfaces and improves filler coating

  • High thermal stability — resists degradation during high-shear mixing

  • Reduces tackiness of rubber compounds — prevents sticking and improves equipment flow

  • Processing-friendly — compatible with most rubber polymers, with minimal effect on molding & vulcanization

  • Provides partial plasticization — softens compounds without relying on mineral oils

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