Masterbatch Industry: Additives, Lubricants & Processing Aids

A masterbatch is only as good as its dispersion and flow — and both depend on the additives blended into it. Sakha International supplies those additives in bulk to masterbatch producers: PE wax, metallic stearates, stearic acid and zinc oxide. Founded in 2011 and based in Delhi, we work as a supplier, distributor and dealer of speciality chemicals, and as an authorised distributor for a number of Indian and international manufacturers. For a masterbatch plant, that means the lubricants, dispersants and stabiliser aids behind colour, white, black, additive and filler masterbatch can be sourced through one dependable window.

Masterbatch producer

What masterbatch producers need from an additive supplier

A masterbatch is a concentrated blend of pigments and/or functional additives pre-dispersed into a carrier resin, then let down into the base polymer — PP, PE (LDPE, LLDPE, HDPE), PVC or PS — during moulding, extrusion or film production. The quality of that concentrate is judged on how evenly the pigment or additive disperses, how cleanly the melt flows, and how consistently the batch performs run after run. Poor dispersion shows up as colour streaking, filter clogging or weak tinting strength; poor lubrication shows up as unstable extrusion and lower throughput.

Functional additives are what prevent those problems, so a masterbatch producer’s additive supplier has to deliver consistent, correctly specified, low-moisture material in the grades and volumes a production run needs. That supply role — reliable processing additives, not finished masterbatch — is where Sakha International sits.

Key additives Sakha International supplies to masterbatch producers

PE wax (polyethylene wax)

The workhorse dispersing aid of the industry. PE wax wets pigments and fillers, reduces melt viscosity and acts as an internal and external lubricant — letting producers push higher pigment or filler loadings while keeping the melt flowing and the extruder stable. It is central to colour, filler and white masterbatch.

Calcium stearate

Used mainly as an acid scavenger, co-stabiliser and lubricant. Calcium stearate neutralises catalyst residues, protects colour and processing stability, and lubricates the melt — often paired with PE wax in polyolefin systems.

Zinc stearate

A multi-role additive that works as a lubricant, dispersant, release and anti-blocking agent and acid scavenger in one material. Our zinc stearate is widely used to improve dispersion and processing across polyolefin masterbatch — a role we cover in more depth in our note on why zinc stearate matters in masterbatch formulations.

Other metallic stearates

Beyond zinc and calcium, our metallic stearates range includes magnesium and aluminium stearate for producers who need specific lubrication, anti-caking or gelling behaviour in specialised additive concentrates.

Zinc oxide

Used as a functional additive and white pigment — for UV protection, as a rubber activator, and in additive concentrates where its performance properties are needed. Our zinc oxide rounds out the additive side of a masterbatch producer’s shopping list.

Stearic acid

A base lubricant and dispersant that improves pigment wetting and melt flow, and serves as a feedstock and co-additive alongside the stearates. Our stearic acid supports both colour and filler masterbatch processing.

Formulation and performance considerations

Choosing a masterbatch additive is a processing decision as much as a cost one. The factors that decide whether an additive performs:

formulation

Dispersion and wetting

the additive must break down pigment or filler agglomerates and wet the particles so colour and properties develop evenly, without streaks or specks.

Lubrication balance

internal lubricants ease melt flow while external lubricants aid release; the right balance stabilises extrusion and lifts throughput.

Acid scavenging and stability

stearates neutralise catalyst residues and protect colour and thermal stability during high-temperature processing.

Melt viscosity and loading

PE wax lowers melt viscosity, which is what allows higher pigment or filler loadings without losing flow.

Carrier and base-polymer compatibility

additives and carrier must suit the base polymer (PP, PE, PVC, PS) so the masterbatch lets down cleanly without delamination or blooming.

Purity, moisture and particle size

consistent low-moisture material with the right particle size keeps dosing predictable and protects finished-product quality.

Masterbatch types our additives support

The additive package shifts with the masterbatch type, but dispersants and lubricants run through nearly all of them:

Masterbatch type Where our additives fit
Colour masterbatch PE wax and stearates wet and disperse organic and inorganic pigments, cut melt viscosity and allow higher pigment loading without agglomeration.
White masterbatch Lubricants and dispersants help carry high TiO₂ loadings smoothly; zinc oxide can feature as a functional white/UV additive.
Black masterbatch Strong dispersing aids are critical to distribute carbon black evenly and avoid filter blocking and streaks.
Additive masterbatch Stearates and stearic acid act as lubricants, acid scavengers and carriers for functional additive concentrates.
Filler masterbatch PE wax and stearic acid coat and disperse calcium-carbonate and other fillers, improving loading, flow and surface finish.

Quality and sourcing considerations for masterbatch buyers

Beyond the additive itself, supply reliability decides whether a line stays in production. Batch-to-batch consistency keeps dispersion and colour predictable; low moisture and controlled particle size keep dosing stable; and dependable bulk availability keeps compounding lines running. For packaging and other regulated end uses, additive selection also has to suit food-contact and safety requirements — India’s plastics sector is served by bodies such as the Central Institute of Petrochemicals Engineering & Technology (CIPET), and buyers should confirm the grade and compliance their application demands. Sourcing stearates, PE wax, stearic acid and zinc oxide from one supplier also reduces the number of vendors a purchase team manages and keeps an additive package aligned.

Additives mapped to their role in masterbatch

A quick reference for procurement and formulation teams — each links to its page:

Additive Primary role in masterbatch Page
PE Wax Pigment/filler dispersant, wetting aid & lubricant View PE wax
Zinc Stearate Lubricant, dispersant, acid scavenger, anti-block View zinc stearate
Calcium Stearate Acid scavenger, co-stabiliser, lubricant View calcium stearate
Metallic Stearates (range) Zinc, calcium, magnesium & aluminium grades View stearates
Stearic Acid Lubricant, dispersant & pigment wetting View stearic acid
Zinc Oxide Functional / UV additive & white pigment View zinc oxide

Why masterbatch manufacturers work with Sakha International

Sakha International has supplied speciality and fragrance raw materials since 2011 from its base in Delhi. For masterbatch buyers, a few practical strengths stand out:

  • The additive package under one window — PE wax, the full metallic-stearate range, stearic acid and zinc oxide from a single supplier.
  • Authorised distribution — as an authorised distributor for a number of Indian and international manufacturers, we give buyers access to consistent, established grades.
  • Technical support — help with dispersion and blending questions and matching a grade to your process, not just order-taking.
  • Bulk supply — quantities and delivery matched to production requirements, from trials to full runs.
  • Competitive, requirement-based pricing — rates worked to the buyer’s specification and budget, with a focus on long-term supply partnerships.

What to include when you enquire

To turn a request around quickly, share as much of the following as you can:

  • The masterbatch type — colour, white, black, additive or filler.
  • Your carrier resin and base polymer (PP, PE, PVC, PS) and processing method — extrusion, injection moulding or film.
  • The additive function you need — dispersant, lubricant, acid scavenger, UV/functional additive.
  • Any grade, particle-size or purity specification, and food-contact or regulatory requirements.
  • Approximate volume and expected reorder frequency.

Discuss your masterbatch additive requirements

Tell us your masterbatch type, base polymer and the additive function you’re after, and we’ll help you source the right grade in bulk. Contact Sakha International for pricing and product details, or call +91 9810055405 / +91 9312455405
to speak with our team.

Frequently asked questions

PE (polyethylene) wax wets and disperses pigments and fillers, lowers the melt viscosity of the concentrate and acts as an internal and external lubricant. That combination lets producers achieve even dispersion, higher pigment or filler loading, and stable extrusion — which is why it is a standard dispersing aid in colour, white and filler masterbatch.

Both are lubricants and acid scavengers, but they are chosen for different emphases. Zinc stearate is valued as a multi-role lubricant, dispersant, release and anti-block agent; calcium stearate is used mainly as an acid scavenger and co-stabiliser that neutralises catalyst residues and protects colour and thermal stability. Many formulations use them alongside PE wax.

Dispersing and wetting agents — principally PE wax, supported by stearic acid and metallic stearates — break down pigment agglomerates and wet the particles so colour develops evenly. Good dispersion also reduces filter clogging and colour streaking in the finished plastic.

Packaging and food-contact applications require additive grades that meet the relevant safety requirements. Tell us the compliance standard your application must meet when you enquire, and we will work to source a grade that suits it. Buyers should confirm the specific compliance their end use requires.

Yes. Sakha International is a Delhi-based supplier, distributor and dealer serving B2B and export buyers, with bulk quantities and delivery matched to production requirements.

Share your masterbatch type, base polymer, the additive function and any grade or compliance requirement through our contact page or by phone, and we will respond with product and pricing details.

6 e1789720419684

WHAT MAKES SAKHA INTERNATIONAL THE LEADING
BULK DISTRIBUTOR OF RAW MATERIAL FOR MASTERBATCH INDUSTRY

High Purity

Quality Assurance as per the Requirement

Widest Range

Authorized distributor of many Indian as well as International Companies

Instant Delivery

Bulk & instant delivery available all the time

Competitive Prices

Best Prices Available as per the Requirements and Budget

Here’s where Sakha International can stand out, offering value suited to the Masterbatch Industry:

  1. High-Quality Raw Materials & Specialty Additives
    We supply top-grade pigments, stabilizers, carriers, and functional ingredients (such as Zinc Stearate, PE Wax) that match global quality standards.

  2. Technical Support & Formulation Expertise
    Beyond just supplying ingredients, we help with blending, dispersion strategies, pilot trials, optimizing for cost & performance.

  3. Focus on Sustainability
    We keep up with regulatory changes, and support clients with eco-friendly additives, options for recycled content, and bio-compatible materials.

  4. Customization & Innovation
    Able to support small/batch custom color masterbatches, or specialty additives for niche applications (e.g., automotive, packaging).

  5. Reliable Supply Chains & Cost Optimization
    Through strategic sourcing, bulk purchasing, efficient logistics, we help reduce raw material cost pressures and mitigate disruption risks.