THICKENT W — Dual-System Clay Thickener, HEC & HPMC Replacement

Q: How does THICKENT W replace HEC or HPMC?

THICKENT W replaces HEC (hydroxyethyl cellulose) and HPMC (hydroxypropyl methylcellulose) in waterborne coatings and construction mortar applications. Advantages over cellulose ethers: superior water retention at equivalent or lower dosage; finer temperature tolerance (disperses in both cold and hot water, unlike HPMC which requires cold water dispersion); better coordination with cellulose (THICKENT W3 can be used at 80% THICKENT W3 + 20% HEC/HPMC for cost reduction); high thixotropy and adhesion. For construction mortar, THICKENT W3 typically replaces HPMC at the same dosage level.

Q: Can THICKENT W be used in solvent-based systems?

Yes — THICKENT W is unique among clay thickeners in being dispersible in both aqueous and solvent systems. Standard HPMC and HEC are water-soluble only and do not function in organic solvent-based formulations. THICKENT W's dual-system compatibility makes it useful for solvent-based adhesives, coatings, and textile printing systems in addition to waterborne applications. Specific compatibility and dosage should be evaluated for the solvent system of interest.

Q: What is the viscosity of THICKENT W3 at 2% in water?

THICKENT W3 achieves 1,500–2,500 mPa·s at 2% concentration in water at 25°C (Brookfield viscometer, RV7 spindle at 60 rpm). The pH range is 8.0–10.0. This viscosity range covers most waterborne paint thickening requirements and medium-build construction mortar applications. For higher viscosity needs, increase concentration above 2%.

THICKENT W is a specially organic modified clay with the unique capability of dispersing in both aqueous and solvent-based systems — unlike standard clay thickeners that work only in water, or standard organoclay that works only in oils/solvents. This dual-system compatibility makes THICKENT W a versatile thickener and HEC/HPMC replacement for waterborne coatings, construction mortar, ceramics, and textile printing applications. Superior water retention, broad temperature dispersibility (both cold and hot water), and high thixotropy provide performance advantages over cellulose ether thickeners at equivalent or lower dosage.

Technical Properties — THICKENT W3

Parameter	Specification	Test Method
Composition	Special organic modified clay	—
Appearance	White powder	Visual
Particle size (200 mesh)	≥ 95% passing	Sieve analysis
Moisture content	≤ 12%	—
Bulk density	430 kg/m³	—
Viscosity (2% in water, 25°C, RV7@60rpm)	1,500–2,500 mPa·s	Brookfield DV-II
pH (solution)	8.0–10.0	—
System compatibility	Aqueous and solvent systems	—

Performance Advantages vs HEC / HPMC

Property	THICKENT W	HEC	HPMC
Water retention	Superior	Good	Good
Cold water dispersibility	Yes	Yes	No (requires cold water)
Hot water dispersibility	Yes	Yes	No (gels in hot water)
Solvent system compatibility	Yes (dual system)	No	No
Thixotropy	High	Low-moderate	Low-moderate
Adhesion and strengthening	High	Moderate	Moderate
Coordination with cellulose	Good (80:20 blend)	—	—

Blending with HEC/HPMC: THICKENT W can be used at 80% THICKENT W3 + 20% HEC or HPMC in construction mortar applications. The blended system maintains the water retention and viscosity performance of 100% cellulose ether while reducing cellulose ether consumption by 80%. This blending strategy is a cost-reduction approach for mortar formulators while maintaining target performance specifications.

Applications and Dosage

Application	Typical Dosage	Key Function
Cement-based mortar (tile adhesive, plaster)	0.1–0.4 wt%	Water retention, workability, anti-sag
Putty (wall filler)	0.1–0.3 wt%	Consistency, water retention, adhesion
Waterborne coatings	0.3–1.0 wt%	Thickening, anti-settling, storage stability
Ceramics (slip and glaze)	0.2–0.8 wt%	Suspension, flow control
Textile printing paste	0.5–2.0 wt%	Paste thickening, adhesion, color fixation

Incorporation Method

Aqueous Systems (Mortar, Coatings)

Add THICKENT W directly to water (cold or hot — both work)
Disperse at moderate agitation for 10–20 minutes until fully hydrated
Add dry components (cement, sand, fillers) and mix thoroughly
For mortar blend with cellulose: pre-blend THICKENT W3 (80 parts) + HEC or HPMC (20 parts) before adding to water

Frequently Asked Questions

How does THICKENT W replace HEC or HPMC?

THICKENT W replaces HEC and HPMC in waterborne coatings and construction mortar with advantages: superior water retention; cold and hot water dispersibility (HPMC only disperses in cold water); dual-system compatibility (works in solvents too); higher thixotropy; better adhesion in mortar. Typical blend: 80% THICKENT W3 + 20% HEC/HPMC in mortar for cost reduction while maintaining performance. Direct replacement at same dosage level for mortar applications.

Can THICKENT W be used in solvent-based systems?

Yes — THICKENT W is uniquely dispersible in both aqueous and solvent systems. Standard HPMC and HEC function only in water. THICKENT W's dual-system compatibility extends to solvent-based adhesives, coatings, and textile printing systems where cellulose ethers cannot be used. Specific compatibility should be evaluated for the target solvent system.

What is the viscosity of THICKENT W3 at 2% in water?

THICKENT W3 achieves 1,500–2,500 mPa·s at 2% in water at 25°C (Brookfield RV7 at 60 rpm), pH 8.0–10.0. This covers most waterborne paint thickening and medium-build mortar requirements. Increase concentration above 2% for higher viscosity targets. THICKENT W coordinates well with HEC/HPMC — use 80:20 THICKENT W:cellulose blend for mortar applications.

Packaging and Storage

Parameter	Specification
Standard packaging	25 kg bags
Storage conditions	Dry, covered warehouse; protect from moisture

Related water-based products: CP-EW (water-based organoclay for coatings/cosmetics) · CP-EWS (improved water-based organoclay) · CP-WBS (high-viscosity water-based organoclay)

Related applications: Construction & Mortar · Waterborne Coatings

THICKENT W — Dual-System Clay Thickener