Lead Stearate
Lead Stearate
Lead Stearate—The performance additive for PVC that requiring the high stability, good flow, and a good surface
🧴 Lead Stearate is “metallic soap" that is obtained from stearic acid and lead. It is a white powder that is widely used in PVC to help to heat stabilization, internal lubrication and the processing aid.
It's because of its good working in the stabilization, the reduction of friction, and the contribution of CaCO₃ and smoothness results Making lead Stearate became the key substance in rigid PVC, such as Pipes, Profile, Electronic wire-cable, and also the requirement of the stabilization of high-temperature polymers in the industries.
Nowadays, Many countries still use lead stearate that is not related to the food/medical industries, but some nations, such as the EU, are starting to using Calcium–Zinc (Ca‑Zn) instead. By following the environmental regulations.
🌟The key feature of Lead Stearate
✅ 1) Heat Stabilizer
Helping to slow the deterioration of PVc when it meets the heat
Reducing the HCI cause while melting
Better maintain the initial color
✅ 2) An advanced internal lubricant
Reducing the friction in the extruder cylinder
Making a better melting flow
Perfect for the high flier or fast-shaped
✅ 3) A Dispersibility in CaCO₃ and Pigment
Making the compound pellet smooth and non-sediment
Reducing the fish eye on the surface
✅ 4) Giving a surface modifier
Always giving the pipes/profile smooths
And preventing the mold from sticking in part release
✅ 5) Electrical Insulation Support
Perfect for electronic wires/cables, particularly in PVC insulator
Combined with the TBLS, or lead phosphite, for long-lasting stability
🏭 The use of Lead Stearate in the industry
📌 1. PVC industry (Main)
PVC Rigid / Extrusion
- The PVC pipes/ clear and durability to the pressure
- Door-windows profiles
- Pad and rigid PVC film
Making more flow, making it non-dropped and smooth, and reduce the shear force
PVC Cable & Wire
- electrical insulation
- Cable sheath
Lead stearate is used to make heat insulators, prevent burns, and make good electrical insulators.
The high filler in the PVC compound
- The PVc pellet with CaCO₃ 10–40% added
helping in dispersion and reducing the friction
📌 2. Rubber Industry
- It's a lubricant and stabilizer in the NBR, SBR rubber
- Making the anti-sticking in the mold
- Flow adapting and making more shaped
📌 3. Plastic and printing industries
- Slip setting
- Reduce the resistance in the extruder/calendaring process.
- It is used as a release agent in some ways
📌 4. Lubricant and Grease industries
Uses as a thickener and a heat-resistant substance
Making the grease texture stable when it meets the high heats
📌 5. Color, Printing, and Coating industries
- Uses as a drier agent for the alkyd paint
- Making the pigment contribution in ink coating
- Enhancing the durability of paint film
📌 6. Petroleum industry
It's a corrosion inhibitor for the grease and some of the petroleum products
📌 7. Printing and molding industries
Quicklime is used as a mold release agent It helps the workpiece to be released from the mold more easily.
Product Details
⭐ Key featured
- White fine powder
- Softening / Melting Point: 105–112°C
- PbO content: 28–30% (Depending on the manufacturer)
- Insoluble in water
- Great dispersibility in the PVC
⭐ Packaging
- Bag 25 kg.
- Big Bag
⭐ Specific for:
- PVC Pipe
- Profile
- Electronic wire-cable
- Compound pellet
- Synthetic rubber
- Color-ink-coating
- The industry grease
💬The frequently asked question (FAQ)
Q1: How is lead stearate different from PE wax/calcium stearate?
A:
- Lead Stearate = stabilizer + internal lubricant
- PE Wax = external lubricant
- Calcium Stearate = lubricant + acid scavenger
→ It's not directly interchangeable but can be used in conjunction to optimize flow and stability.
Q2: What quantity is used in the PVC formula?
A: Basically on 0.5–2 phr depending on the types and the shape rates
Q3: Is it safe?
A: It's a lead substance. Must control the dust, inhalation, and waste management
and using the PPE and air suction system following the manufacturing standard
Q4: Can the products that have lead stearate go to the EU?
A: Many groups in the EU have restricted and canceled the lead stabilizer application
If in case want to export, it can be changing as a Ca‑Zn Stabilizer
Q5: Can we request the TDS/MSDS?
A: Contact the staff if needed
📧 Email: info@leternalgroup.com
📱 Line OA: @leternalgroup
