Coating Grade CMC is a versatile thickener and stabilizer used in aqueous coating formulations.
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It controls rheology, prevents pigment settling, and improves film formation—ensuring smooth, uniform coating application and consistent finish quality. This grade is valued for its excellent water retention properties, which extend the coating’s open time (workable period) and reduce cracking or uneven drying.
Parameter | Specification |
Appearance | White to creamy powder |
Viscosity (1% solution, 25°C) | 4000–5500 cP |
Degree of Substitution (DS) | 0.9–1.5 |
Purity (dry basis) | ≥97% |
pH Value (1% solution) | 6.5–8.5 |
Particle Size | ≥99% through 100 mesh |
Superior Rheology Control: High viscosity (4000–5500 cP) stabilizes coatings, preventing sagging on vertical surfaces (e.g., walls, metal panels).
Excellent Water Retention: Minimizes inconsistencies in drying time, reducing surface defects such as orange peel, cracking, or pinholes.
Enhanced Film Properties: Improves coating adhesion to substrates and film flexibility, boosting scratch and impact resistance.
Uniform Pigment Suspension: Maintains consistent pigment distribution throughout the coating, ensuring uniform color and opacity.
Paper Coating: Used in surface coatings for printing papers (e.g., offset, digital) to improve smoothness, ink receptivity, and print quality.
Wood Coatings: Enhances the flow and leveling of water-based wood finishes (e.g., stains, clear coats), ensuring a smooth, even appearance.
Industrial Coatings: Stabilizes formulations for metal, plastic, and concrete substrates, improving durability and finish consistency.
Q: Can Coating Grade CMC replace Hydroxyethyl Cellulose (HEC) in coating formulations?
A: Yes, it offers comparable thickening and stabilizing performance at a more cost-competitive price point, with no compromise on finish quality.
Q: What impact does temperature have on the viscosity of Coating Grade CMC?
A: It maintains stable viscosity in temperatures up to 60°C, making it suitable for most industrial coating application processes.
