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sales@landu-china.com +86 180 4322 4403
Premium Gypsum Solutions

LANDU Gypsum Additives

إيثرات السليلوز RDP Retarders

LANDU is a trusted manufacturer of high-performance cellulose ethers (CE), redispersible polymer powders (RDP), and gypsum retarders. Our additives are engineered to improve workability, adhesion, sag resistance, and crack prevention for both hand-applied and machine-applied gypsum systems.

Hand-Applied Systems
Machine-Applied Systems
Interior Finishing
Additives Range: CE / RDP / Retarders
Application: Gypsum Systems
تحسين القدرة على العمل
Smooth application
تصاق فائق
Strong bonding
Sag Resistance
Vertical stability
منع التشقق
متانة طويلة الأمد
Optimized Water Retention
Controlled Setting Time
Excellent Surface Finish
Enhanced Mechanical Strength

What Are Gypsum Additives?

Gypsum additives such as HPMC, HEMC, RDP, and gypsum retarders are essential for high-quality plaster, jointing, and trowelling compounds.

إيثير السليلوز
CE

إيثير السليلوز

Improves water retention, prevents rapid drying, and enhances workability. Ensures smooth application and reduces tool sticking.

احتباس الماء
تحسين القدرة على العمل
Smooth Application
Learn More →
مسحوق البوليمر المعاد توزيعه
RDP

مسحوق البوليمر المعاد توزيعه

Enhances adhesion, flexibility, and long-term durability.

تصاق فائق
Enhanced Flexibility
Long-term Durability
Learn More →
مُؤخِّر الجبس
مُؤخِّر

مُؤخِّر الجبس

Controls setting time for consistent workability and curing.

Controlled Setting Time
Consistent Workability
Optimized Curing
Learn More →

الفوائد الرئيسية

Smooth, crack-free surfaces
Superior workability and spreadability
Excellent anti-sagging performance
Enhanced adhesion and structural integrity

Typical Applications of Gypsum Additives

01

Hand-Applied & Machine-Applied Plaster

Hand-applied plasters for small areas, renovations, or touch-ups
Machine-applied plasters for continuous mixing and application (typical thickness ~10mm)
Hand-Applied & Machine-Applied Plaster
Trowelling Compounds
02

Trowelling Compounds

Level uneven walls or ceilings
Smooth, paintable finishes
Ideal for plasterboards, concrete walls, or gypsum ceilings
03

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Joint Filling & Adhesives
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04

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03

Crack Resistance

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04

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RDP improves bonding to substrates
Gypsum retarders ensure consistent set times
05

Cost Efficiency & Higher Yield

Optimized water retention reduces gypsum powder usage
Maintains workability for large-scale applications

Selection Guide – Recommended Products

إيثر السليلوز لاندركول

Landercoll®

إيثير السليلوز

المنتج Recommended Application Performance
HEMC EM100 Hand-Applied Plaster / Gypsum Putty Excellent water retention, smooth application, extended open time
Novastar Gypsum Retarder

Novastar™

مُؤخِّر الجبس

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P300 Gypsum-based systems for controlled setting time

Accurate™

Redispersible Polymer Powder (Optional)

Three specialized formulations for different performance requirements

Accurate 5011N Rigid
Rigid
5011N

Maximum Structural Strength

Enhanced adhesion to substrates
Superior structural integrity
Ideal for load-bearing applications
Best For: Heavy-duty gypsum systems
Accurate 4025N Semi-flexible
Semi-flexible
4025N

Balanced Performance

Optimal flexibility for crack prevention
Maintains structural stability
Versatile for various substrates
Best For: General-purpose applications
Accurate 5045N Flexible
مرن
5045N

Ultimate Flexibility

Maximum crack resistance
Superior durability in movement zones
Excellent for dynamic substrates
Best For: High-movement areas

Recommended Combination for Optimal Gypsum Performance:

HEMC EM100 + Gypsum Retarder P300 + RDP (Choose based on application)

Why Choose LANDU?

الخبرة

Over a decade of experience in construction chemical additives

Certification

ISO 9001 certified and EU REACH compliant

مختبر البحث والتطوير

Advanced R&D laboratories for formula optimization

Global Supply

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Free Sample Package
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Expert Support

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Q1

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Q2

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Q4

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Q5

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Q6

Can LANDU assist with custom formulations?

Yes. Our technical team can provide tailored solutions, dosage guidance, and compatibility testing.

Q7

Do LANDU gypsum additives improve crack resistance?

Yes. Proper combination of HEMC + RDP + Gypsum Retarder reduces shrinkage stress and prevents microcracks.

Q8

How fast can I receive my order?

LANDU provides fast global delivery via FedEx or DHL for both small and bulk orders.

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