Tile Adhesive Series HPMC CK-303 / CK-308 / CK-309 — Factory Direct Supply by Keyoung
As a professional HPMC manufacturer, Keyoung offers the Tile Adhesive Series HPMC (CK-303 / CK-308 / CK-309) specifically engineered for cement-based ceramic tile adhesives. Our cellulose ether grades provide excellent performance in tile adhesive systems — offering superior water retention, improved workability, longer open time and anti-sag properties. With our factory-direct supply and customization capabilities, formulators of tile adhesive can access reliable HPMC for large-format tile, vertical installations or high-performance bonding systems.
Product Series Overview – CK-303 / CK-308 / CK-309
Product Descriptions
CK-308
CK‑308 is a high‑viscosity HPMC (hydroxypropyl methylcellulose) fine powder — tasteless, odorless, non‑ionic and easily dispersible. With a typical viscosity of ~130,000–160,000 mPa·s (1% solution) and ~50,000–70,000 cP (2% solution at 20 °C), CK‑308 delivers outstanding open time and anti‑sag performance in tile adhesive formulations. Designed for cement‑based ceramic tile adhesives and large paving areas, its recommended dosage of 2‑3 kg per ton ensures excellent workability and adjustment time.
Model | Appearance | Moisture ≤ | pH value | Bulk density | Particle Size | Viscosity (NDJ 1%, 20 °C)* | Viscosity (Brookfield 2%, 20 °C)* |
CK-308 | White or light yellow powder | 6.0% | 5.0-9.0 | 0.3-0.5 g/cm³ | min. 90% pass 80 mesh | ~130,000-160,000 mPa·s | ~50,000-70,000 cP |
CK-309
CK‑309 is a mid/high‑viscosity HPMC fine powder tailored for tile adhesive applications. It features NDJ viscosity around ~100,000–120,000 mPa·s (1 % solution) and ~35,000–45,000 cP (2 % solution) at 20 °C, supporting improved anti‑sag performance, workability and open time in cement‑based tile adhesives and plaster mortars. Typical dosage: 2‑3 kg per ton of dry mix.
Model | Appearance | Moisture ≤ | pH value | Bulk density | Particle Size | Viscosity (NDJ 1%, 20 °C)* | Viscosity (Brookfield 2%, 20 °C)* |
CK-309 | White or light yellow powder | 6.0% | 5.0-9.0 | 0.3-0.5 g/cm³ | min. 90% pass 80 mesh | ~100,000-120,000 mPa·s | ~35,000-45,000 cP |
CK‑303
CK‑303 is a dedicated high‑performance HPMC grade for premium tile adhesive systems, particularly suited to large‑format tile and vertical wall installations. Engineered for optimal viscosity, particle size and substitution degree, this tile adhesive HPMC supports robust bonding strength, extended open time and excellent slip resistance for advanced adhesive formulations.
Model | Appearance | Moisture ≤ | pH value | Bulk density | Particle Size | Viscosity (NDJ 1%, 20 °C)* | Viscosity (Brookfield 2%, 20 °C)* |
CK-303 | (to be filled) | ≤ 6.0% | 5.0-9.0 | 0.3-0.5 g/cm³ | (specify) | (specify) | (specify) |
Key Features & Advantages in Tile Adhesive Systems
Our tile adhesive HPMC grades deliver an integrated set of performance benefits for modern tile adhesive formulations, particularly when using our CK‑303 / CK‑308 / CK‑309 series of high‑viscosity HPMC.
Superior Water Retention
High‑viscosity HPMC acts as a protective colloid film once dispersed in the adhesive mix, significantly enhancing water retention of the tile adhesive. In hot or absorbent substrate conditions, this prevents premature drying, ensures full hydration of cement particles, and supports stronger bonding.
By maintaining moisture within the system, the adhesive remains workable and effective longer — a key advantage for large paving areas and high‑performance tile adhesive systems using tile adhesive HPMC.
Enhanced Bond Strength & Adhesion
The addition of HPMC for tile adhesive improves bond strength and adhesion between tiles and substrates (floors, walls, vertical applications). It improves substrate wetting and forms a polymer film that compensates for substrate irregularities and supports long‑term bond durability.
This is especially crucial for heavy or large format tiles, where good adhesion avoids debonding and reduces installation failures.
Extended Open Time
Open time — the period during which adhesive remains workable and tiles can be adjusted — is significantly extended by tile adhesive HPMC. Because the polymer network slows down moisture evaporation and provides a stable rheology, installers gain more flexibility, especially in detailed or large tile installations.
For large format tile and complex layouts, this extended open time from HPMC enables higher quality finishes and fewer installation issues.
Excellent Anti‑Sag & Slip Resistance
In vertical or heavy tile applications, sagging and tile slip are serious issues. Our high‑viscosity HPMC grades build a thixotropic network within the cement‑based tile adhesive, improving internal cohesion and preventing sag or slide of tiles during setting.
This makes our tile adhesive HPMC highly suitable for vertical surfaces, large tiles or stone installations where slip resistance is critical.
Improved Workability, Flow & Leveling
Although these are high‑viscosity HPMC grades, they are formulated for good dispersion and rheological balance in cement‑based tile adhesives. The result is easier trowel application, better flow, uniform coverage, and reduced labor time.
Tile installers benefit from smoother application, fewer voids or lumps, and improved finishing — all thanks to our manufacturer-grade tile adhesive HPMC.
Better Durability and Crack Resistance
Beyond initial workability and bonding, high‑quality tile adhesive systems must resist long‑term stress, shrinkage and substrate movement. Our tile adhesive HPMC supports flexural strength, reduces micro‑cracking and improves overall durability of the installed tile system.
This ensures that tile installations using our HPMC remain stable, well‑bonded and aesthetically pleasing for years.
Application in Tile Adhesive Systems
Our Gypsum Series HPMC (CK-203 / CK-205) is precisely engineered for a wide range of gypsum-based applications. Whether you are producing plaster, wall putty, dry-mix mortar or joint compounds, our gypsum-grade HPMC ensures superior water retention, improved workability, controlled viscosity and long open time — enabling smoother application, enhanced surface finish and dependable performance in gypsum systems.
Function of HPMC in Tile Adhesive
In tile adhesive formulations, HPMC plays critical roles: improved water retention, thickening, sag resistance, open time extension and bonding strength. By forming a thin polymer film and retaining moisture, HPMC ensures the cementitious adhesive remains workable and effective during installation.
Typical Dosage & Use Instructions in Cement-Based Tile Adhesive
Recommended dosage for tile adhesive grade HPMC is typically 2-3 kg per ton of dry mix in CK-308/CK-309 series (about 0.2-0.3% by weight). Pre-dispersion in water at ambient temperature is advised to avoid lumping. Ensure full hydration before adding tile adhesive to substrate.
Tile Adhesive Standard Compliance
Our HPMC grades support adhesive systems complying with EN 12004 C1/C2 standards, large format tile systems and vertical installations. With high viscosity and enhanced anti-slip performance, formulators can meet international bonding and slip resistance criteria.
Production Manufacturer Overview
Our tile adhesive HPMC grades provide exceptional water retention, improved workability, extended open time, and superior anti‑sag and bonding performance for cement‑based tile adhesive systems.
Factory Direct Supply & Brand Advantage
Keyoung is a dedicated HPMC factory, controlling the full production chain of hydroxypropyl methylcellulose — from raw cellulose sourcing to modification, drying and packaging. This factory direct supply model ensures consistent quality, lower cost and stable delivery for our tile adhesive grade HPMC.
OEM / Customization Capabilities for Tile Adhesive Grade HPMC
We support formulators with customizable HPMC grades suitable for tile adhesive systems: you can adjust viscosity, particle size, substitution degree to meet your specific tile adhesive formulation requirements.
Quality Assurance & Certification
Each batch of CK-303 / CK-308 / CK-309 undergoes rigorous QC (moisture ≤ 6%, bulk density 0.3-0.5 g/cm³, pH 5.0-9.0) and we comply with construction chemical standards. As a manufacturer we provide COA, MSDS and full traceability.
How to Choose & Use Our HPMC in Tile Adhesive
Selection Guide Between CK-303, CK-308, CK-309
Refer to the model comparison above. Identify your tile adhesive type (wall/floor, large format, vertical/horizontal) → select corresponding grade → specify required viscosity or open time → request factory customization.
Processing & Mixing Guidelines
- Pre-disperse HPMC in cold water (at 20-25 °C) under gentle stirring until clear solution forms.
- Add water solution to dry mix of tile adhesive (cement + sand + additives) with recommended water dosage.
- Use trowel to apply adhesive; adjust tiles within the extended open time window.
- Avoid adding too much HPMC, which may lead to overly thick consistency or extended setting time.
Packaging, Storage, Logistics & MOQ
- Packaging: 25 kg paper-plastic composite bag lined with polyethylene.
- Storage: Store under dry, clean condition and away from heat to keep moisture ≤ 6%.
- Minimum Order Quantity (MOQ): factory direct supply starting at ___ metric tons.
- We ship globally with export-ready documentation and flexible payment terms.
FAQ – Frequently Asked Questions
What is the typical dosage of HPMC in tile adhesive?
Typically, dosage of HPMC in tile adhesive formulations ranges from 0.2 % to 0.6 % by weight of the dry mix. Some sources recommend about 0.2‑0.3 % for standard mixtures, and up to 0.5‑0.6 % for high‑performance or large‑format tile systems.
Can CK‑303 / CK‑308 / CK‑309 replace methyl cellulose (MC) in tile adhesive?
Yes. Our dedicated tile adhesive HPMC grades provide superior performance compared to MC: stronger water retention, better finishing, and enhanced adhesion. Numerous technical articles confirm that HPMC improves workability, bond strength and sag‑resistance in tile adhesive systems.Learn more about the comparison between HPMC and MC on our
Which grade should I use?
Selection depends on your specific tile adhesive system:
- Use CK‑308 for high‑viscosity requirements, large paving area or long open time tile adhesive systems.
- Use CK‑309 for standard tile adhesive applications where moderate viscosity and good anti‑sag are required.
- Use CK‑303 for special/off‑standard needs—for example large‑format tiles, vertical installations or extreme performance requirements.
How should I store HPMC powder?
As a manufacturer we recommend storing HPMC powder in a dry, sealed place, away from direct heat and moisture. Maintain the moisture content of the HPMC at ≤ 6% to ensure consistent performance in tile adhesive formulations.
Do you provide OEM customization and free samples?
Yes — as a factory‑direct manufacturer of tile adhesive grade HPMC, Keyoung offers OEM/ODM services, technical consultation, and sample testing. We support tailored specification adjustments (viscosity, particle size, substitution degree) to meet your formulation requirements.
Contact Keyoung – Your Trusted Gypsum Series HPMC Supplier
Ready to elevate your gypsum-based product line with tailored, high-performance HPMC? Contact Keyoung today for free samples, custom formulation support, and factory-direct supply.