Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Celotech HHB300S Hydroxypropyl Methylcellulose

Celotech HHB300S is a high-purity hydroxypropyl methylcellulose (HPMC) from the Celotech series, specifically engineered for superior water retention and viscosity stability in tile adhesives and self-leveling compounds. It offers excellent dispersibility, extended open time, and enhanced workability without compromising bond strength or setting performance.
  • celotech hhb300s hydroxypropyl methylcellulose_7680db3e
  • celotech hhb300s hydroxypropyl methylcellulose_7680db3e

Features Of Celotech HHB300S Hydroxypropyl Methylcellulose

  1. Highly water-soluble with rapid dispersion and low gelation temperature for efficient cold-water hydration.

  2. Excellent thickening performance in aqueous systems, delivering consistent viscosity stability across pH 3–11.

  3. Superior film-forming capability with enhanced flexibility and reduced brittleness in dried films.

  4. Good compatibility with common construction additives including redispersible polymer powders and cellulose ethers.

  5. Low ash content and high purity, meeting stringent requirements for pharmaceutical-grade excipient applications.

Typical Applications Of Celotech HHB300S Hydroxypropyl Methylcellulose

  1. Cement-based tile adhesives and grouts requiring extended open time and improved sag resistance.

  2. Self-leveling underlayments where controlled flow, surface smoothness, and minimal shrinkage are critical.

  3. Exterior insulation finishing systems (EIFS) for optimized workability and crack resistance.

  4. Pharmaceutical oral solid dosage forms as a binder and sustained-release matrix former.

  5. Water-based architectural coatings to enhance rheology control and brush/roller application performance.

Specifications Of Celotech HHB300S Hydroxypropyl Methylcellulose

Chemical TypeHydroxypropyl methylcellulose (HPMC)
Product FormWhite to off-white free-flowing powder
AppearanceFine, homogeneous granular powder
Primary ApplicationsConstruction mortars, pharmaceutical formulations, and water-based coatings
Key FeaturesHigh viscosity grade, cold-water soluble, non-ionic surfactant-compatible
BenefitsImproved water retention, extended working time, enhanced adhesion and cohesion
Viscosity (2% aqueous solution, 20°C)Approx. 300,000 mPa·s
Substitution Pattern (Molar Substitution)MS (methoxyl): 1.5–2.0; DS (hydroxypropyl): 0.15–0.25


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