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🧪 Premium HEC Solution
LANDU Hydroxyethyl Cellulose (HEC)

High‑Performance Thickener & Stabilizer for Emulsion Polymerization

In emulsion polymerization, rheology control and colloidal stability define production success.

As a trusted cellulose‑ether manufacturer, LANDU delivers high‑purity Hydroxyethyl Cellulose (HEC) engineered specifically for emulsion‑polymer systems.

Our HEC ensures stable emulsions, smooth polymerization, and consistent final‑product quality — meeting the demanding standards of VAE, acrylic, styrene‑acrylic, and other water‑borne polymer emulsions worldwide.

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Rheology Control
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Colloidal Stability
✓
High Purity
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Water-Borne Systems
VAE Emulsion Acrylic Polymer Styrene-Acrylic Water-Borne Polymer
Emulsion Polymerization Process
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Industrial Grade Emulsion Systems
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Premium Quality HEC
⚗️ Technical Functions

Role of HEC in Emulsion Polymerization

During polymerization, HEC serves as both a protective colloid and a dynamic rheology modifier, enabling controlled particle growth and improved processing stability.

1
🛡️

Protective Colloid Function

• Forms a thin, uniform colloidal film around monomer droplets.
• Prevents particle agglomeration and reduces coagulum formation.
• Promotes narrow, controlled particle size distribution.
2
💧

Thickening & Viscosity Control

• Provides balanced viscosity throughout polymerization.
• Enhances dispersion of monomers and additives for smooth mix flow.
• Maintains homogeneous reaction conditions.
3
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Emulsion Stabilization

• Improves long‑term storage stability of finished emulsions.
• Minimizes sedimentation and syneresis.
• Strengthens freeze–thaw and handling resistance.
4
✨

Improved Film‑Forming Behavior

• Enhances coating flow and leveling in downstream applications.
• Contributes to film smoothness and optical clarity in VAE and acrylic formulations.
⭐ Product Benefits

Advantages of LANDU® HEC for Polymer Manufacturers

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High Biological Stability

Resists microbial degradation during processing and storage.

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Excellent Enzyme Resistance

Minimizes viscosity loss and ensures long‑term consistency.

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Superior Rheology Performance

Provides controlled flow, steady build‑up, and effective suspension.

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Low Impurity Content

Improves polymerization reliability by reducing coagulum formation.

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Broad System Compatibility

Optimized for VAE, pure acrylic, styrene‑acrylic, and vinyl acrylic.

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Fast & Complete Dissolution

Lump‑free hydration for efficient processing.

LANDU HEC Product
🏆
LANDU® Premium HEC
📊 Product Selection

Recommended LANDU HEC Grades for Emulsion Polymerization

Grade Brookfield Viscosity
(1 % / 2 %)		 Moisture
(≤)		 Ash
(≤)		 Particle Size Key Features
⭐ HE30
1,500 – 2,500 mPa·s 6% 5% 98 % pass
80 mesh 		Stable viscosity profile and excellent protective colloid function
💰 HE60
2,500 – 3,500 mPa·s 6% 5% 98 % pass
80 mesh 		Strong suspension capacity and cost‑effective performance
💪 HE100BE
3,500 – 5,000 mPa·s 6% 5% 98 % pass
80 mesh 		High thickening grade offering maximum viscosity and stability
📌 Custom viscosity grades and surface‑treated options available upon request.
🎯 Application Areas

Applications of LANDU HEC in Emulsion Polymerization

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VAE Emulsions

Vinyl Acetate‑Ethylene systems for adhesives and coatings

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Pure Acrylic Emulsions

Architectural binders and high-performance coatings

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Styrene‑Acrylic Systems

Vinyl‑acrylic formulations for diverse applications

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Construction Binders

Adhesives and emulsion binders for building materials

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Waterborne Latex

Resin emulsions for eco-friendly formulations

✓

Compatible with both batch and semi‑continuous polymerization processes.

🏆 Why Partner With Us

Why Choose LANDU as Your HEC Partner

⭐

REACH & ISO Certified Manufacturing

Guaranteed compliance and safety for global distribution.

⭐

Advanced Process Control & Quality Assurance

Strict viscosity and purity monitoring for consistent batch results.

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Expert Technical Support

Formulation assistance for VAE, acrylic, and styrene‑acrylic polymerization systems.

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Reliable Global Supply

Efficient logistics via FedEx / DHL with fast delivery and documentation.

LANDU HEC Free Samples
🎁
Free Sample Kit
📦 Free Testing Program

Request Free Sample & Technical Documentation

Experience the performance yourself — request a free sample kit including:

• HEC sample (200–600 g per grade)
• Technical Data Sheet (TDS) and Certificate of Analysis (COA)
• Formulation guidelines for VAE or acrylic systems
📩 Contact Us Now → Optimize Your Emulsion Polymerization with LANDU HEC
✨ Our Promise

LANDU HEC — Reliability in Every Reaction

From monomer dispersion to film formation, LANDU HEC ensures that your emulsions remain stable, uniform, and high‑performing.

Partner with us to develop smarter polymer formulations backed by trusted chemistry and expert technical support.

🎯

LANDU – Where Polymer Science Meets Precision.

LANDU Test Laboratories
🔬
Advanced Testing Lab
❓ FAQ

Frequently Asked Questions — LANDU® HEC for Emulsion Polymerization

Q1.

What is the recommended dosage of HEC in emulsion polymerization?

+
A:

Typical dosage ranges from 0.1 – 0.8 % by total formulation weight, depending on desired viscosity, monomer type, and reactor design. For VAE and acrylic emulsions, a starting point of 0.3–0.5 % is generally sufficient to stabilize the system and control particle size distribution.

LANDU's application team can fine‑tune dosage based on your lab trials.

Q2.

How should LANDU HEC be incorporated into an emulsion polymerization process?

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A:

HEC is usually dissolved in deionized water to prepare a pre‑solution before adding to the reaction. For most systems:

1️⃣ Charge cold or ambient water into a mix tank.
2️⃣ Agitate slowly while sprinkling HEC powder.
3️⃣ Allow full hydration (20–40 min) until clear.
4️⃣ Introduce the solution into the reactor with monomers and surfactants.

This method ensures lump‑free dispersion and stable viscosity development.

Q3.

Is LANDU HEC compatible with common initiators and surfactants?

+
A:

Yes. HEC is a nonionic polymer and shows excellent compatibility with standard water‑soluble initiators such as ammonium persulfate (APS), sodium bisulfite, and redox systems, as well as with most anionic, cationic, and nonionic surfactants.

It does not interfere with free‑radical polymerization or emulsion stability.

Q4.

What is the pH and temperature stability of LANDU HEC during polymerization?

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A:

LANDU HEC maintains stable viscosity and protective colloid function across pH 2 – 12 and temperatures up to 90 °C under normal reaction conditions.

It remains chemically inert and does not alter the polymer backbone or initiator efficiency.

Q5.

Does HEC influence the final emulsion particle size or film properties?

+
A:

Yes — positively. HEC reduces particle agglomeration, leading to narrower particle size distribution and smoother film formation.

In downstream coating applications, this results in better flow, leveling, and film clarity without affecting gloss or adhesion.

Q6.

What precautions are recommended to prevent microbial growth in HEC solutions?

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A:

Although LANDU HEC has high biological stability and enzyme resistance, we recommend adding 0.05–0.2 % biocide or preservative to the aqueous solution if it will be stored for several days before use.

Maintain a closed tank and avoid extended exposure to warm, humid conditions.

Q7.

How should HEC powder be stored to retain quality?

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A:

Store in the original sealed bag under dry, cool conditions (≤ 35 °C, RH < 60 %). Keep away from moisture and direct sunlight.

When stored properly, LANDU HEC retains full performance for 24 months. After opening, reseal immediately to prevent moisture absorption.

Q8.

Can LANDU provide customized HEC grades for specific polymerization systems?

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A:

Absolutely. We develop tailor‑made HEC grades with modified viscosity, particle size, or surface treatment to suit high‑shear reactors, fast‑feed emulsion processes, or low‑temperature polymerizations.

Our R&D lab offers pilot‑testing and rheology simulation support for custom projects.

Q9.

Are free samples and technical documents available for evaluation?

+
A:

Yes. LANDU offers free samples of HE30BE, HE60, and HE100 grades along with TDS, MSDS, and COA files.

Sample kits ship worldwide via FedEx or DHL — no fees or obligations. Our technical team can provide starting formulations and processing recommendations.

✅

Need Expert Support?

Our polymer‑chemistry specialists can assist with reactor viscosity profiles, hydration systems, and stabilizer design for custom emulsion projects.

📩 Request Free Sample or Consult Our Experts →
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