STD4905H Modified cellulose ether
Paint chemicals 2025-03-04
With high water retention, it can significantly improve the construction and mechanical properties of wet mortar.
Technical Introduction to STD4905H Modified Cellulose Ether
STD4905H is a high-performance modified cellulose ether designed for specialized industrial applications. It exhibits superior thickening, water retention, and stability under harsh conditions, making it suitable for construction, coatings, adhesives, and other demanding formulations. Below are detailed specifications, applications, and performance data.
Basic Physical and Chemical Properties
| Property | Value/Range |
|---|---|
| Appearance | Fine white powder |
| Solubility | Cold water-soluble |
| Viscosity (2% solution) | 8000–12.000 mPa·s |
| pH (1% solution) | 6.5–8.5 |
| Moisture Content | ≤ 4% |
| Ash Content | ≤ 2% |
Key Industrial Applications
| Industry | Primary Function |
|---|---|
| Construction | Water retention in dry-mix mortars |
| Paints & Coatings | Rheology modifier & anti-sag agent |
| Adhesives | Improves bonding strength & workability |
| Oilfield Chemicals | Fluid loss control in drilling fluids |
| Pharmaceuticals | Controlled-release excipient |
Performance Advantages Over Standard Cellulose Ethers
| Feature | Benefit |
|---|---|
| Higher viscosity | Better suspension stability |
| Improved thermal stability | Performs at elevated temperatures (up to 90°C) |
| Enhanced salt tolerance | Stable in high-ionic environments |
| Pseudoplastic behavior | Smooth application in coatings |
| Low biological degradation | Longer shelf life in wet conditions |
Recommended Dosage in Different Applications
| Application | Typical Dosage (wt%) |
|---|---|
| Dry-mix mortar | 0.1–0.3% |
| Water-based paints | 0.2–0.5% |
| Tile adhesives | 0.3–0.6% |
| Oilfield fluids | 0.5–1.0% |
| Pharmaceutical tablets | 1.0–3.0% |
Storage and Handling Guidelines
| Factor | Recommendation |
|---|---|
| Storage Temperature | Below 30°C, dry environment |
| Shelf Life | 24 months in sealed packaging |
| Handling Precautions | Avoid dust formation; use PPE if needed |
| Compatibility | Stable with most common additives |
Conclusion
STD4905H is a versatile, high-viscosity modified cellulose ether with enhanced thermal and chemical stability. Its broad compatibility and performance benefits make it ideal for advanced industrial applications requiring superior rheological control and durability.
