RDP for Self-Leveling Compound: Rigid vs Semi-Flexible Grades
China Reliable Manufacturer - RDP for Self Leveling Compound Additives Solutions
While HPMC governs the rheology and open time of a self-leveling compound, Redispersible Polymer Powder (RDP) governs what happens after the mortar sets: bond strength to the substrate, resistance to impact and abrasion, and the ability to accommodate substrate movement without cracking. RDP re-disperses in water during mixing and forms a polymer film network within the cured cement matrix as it dries — a mechanism entirely distinct from HPMC’s water-retention role.
Landercoll® offers Accurate™ RDP under three grades — 5011N, 5100L, and 5220L — spanning rigid to semi-flexible film types, allowing formulators to tune hardness versus deformation tolerance based on substrate condition and traffic load.
Recommended RDP Grade by Application
| Application | Recommended Grade | Type | Why |
|---|---|---|---|
| High-Traffic Industrial Flooring | 5011N | Rigid | Maximum hardness and abrasion resistance for heavy foot/equipment traffic |
| Commercial Flooring Underlayment | 5100L | Rigid | High bond strength and dimensional stability on stable concrete substrates |
| Residential Floor Leveling | 5011N or 5100L | Rigid | General-purpose rigid performance for standard traffic loads |
| Substrate with Minor Movement/Cracking Risk | 5220L | Semi-Flexible | Accommodates slight substrate flex without transmitting cracks to the leveling layer |
| Renovation Over Existing Tile/Coated Surfaces | 5220L | Semi-Flexible | Better adhesion tolerance on variable or less porous substrates |
Selection Guide: Technical Parameters & Dosage
Landercoll® Accurate™ Redispersible Polymer Powder
| Parameter | 5011N | 5100L | 5220L |
|---|---|---|---|
| Film Type | Rigid | Rigid | Semi-Flexible |
| Minimum Film Formation Temp (°C) | ~0 | ~0 | ~0 |
| Recommended Dosage (%) | 1.0–2.0 | 1.0–2.5 | 1.5–3.0 |
| Ash Content (%) | 10–14 | 10–14 | 10–14 |
| Redispersibility | Excellent | Excellent | Excellent |
| Bond Strength | High | High | Medium–High |
| Flexibility | Low | Low | Medium |
Dosage Note: Rigid grades (5011N, 5100L) are typically dosed at the lower end of the range for cost-efficient hardness gains; semi-flexible grade (5220L) may require slightly higher dosage to achieve comparable bond strength while retaining deformation tolerance. Landercoll’s technical team can recommend dosage based on your substrate type and expected load conditions.
RDP's Functional Role in Self-Leveling Systems
Adhesion to Substrate
Impact & Abrasion Resistance
Flexibility & Crack Resistance
Reduced Water Absorption
Workability Support
Try Our FREE Samples!
LANDU, RDP Supplier from China, experience our products firsthand with a FREE sample!
- Sample Size: 200g or 400g.
- Shipping: Fast via FedEx or DHL.
- Service: Expert formula adjustment support.
Packaging and Size
We package additives in paper bags with plastic liners to provide extra protection. Please keep the product sealed and store it in a cool, dry place, away from moisture, direct sunlight, and sources of ignition.
Why choose LANDU?
Trusted Construction Additives manufacturer for global mortar producers.
One-Stop Sourcing, Simplified
All seven essential additives from a single supplier means fewer purchase orders, simplified logistics, and consistent quality across your entire formulation. No need to coordinate multiple vendors.
Application-Driven R&D
In-house R&D center and application laboratory means we don't just sell powders — we help you optimize your formulation. If you're developing a new self-leveling compound or UHPC mix, we work with you to fine-tune the additive package.
Manufactured in Scale
Three fully automated facilities with DCS & SIS-controlled systems ensure batch-to-batch consistency — critical when your production runs 24/7. ISO 9001, REACH, and ECOVADIS certified.
Global Experience
Trusted by partners across 60+ countries. Not a startup, not a trader — a manufacturer with proven export experience and regulatory compliance for international markets.
Accurate Additives Supplier with Good Reputation
Landercoll® has been a trusted name in cellulose ether manufacturing for years, backed by three production bases equipped with state-of-the-art facilities. Our manufacturing process features 16 horizontal reactors and 4 vertical reactors ensuring high-capacity, consistent output, alongside a DCS (Distributed Control System) for fully automated production and an SIS (Safety Instrumented System) for real-time process safety.
ISO 9001 and EU REACH certification
Explore LANDU’s trusted chemical products, exported to over 60 countries worldwide. Benefit from our extensiveexperience collaborating with multinational corporations and top-tier factories. Our independent R&D center andapplication laboratory innovate with 11 patents and 4 usage patents.
Count on us for high-quality products and customized formulations to meet diverse customer needs.
Why Choose LANDU?
Stable Quality for Production
Consistent additive performance helps manufacturers maintain formulation stability between batches.
Technical Support for Formulation Development
LANDU provides grade recommendations based on raw materials, application requirements and production conditions.
Complete Additive Portfolio
From cellulose ether to RDP and specialty additives, LANDU supports complete solutions for self-leveling compound production.
Handling Large Volume Orders
Global Shipping and Delivery Solutions
Landercoll Other Products
FAQ
Self-leveling compounds typically use cellulose ether, PCE, RDP, defoamer and rheology modifiers to achieve proper flow and stability.
LANDU provides LANDERCOLL® cellulose ether, Accurate® RDP and NOVASTAR™ specialty additives for different self-leveling formulations.
Yes. LANDU supports sample evaluation to help customers select suitable additives for their formulations.