Hydroxy Methyl Propyl Cellulose | Leading HPMC Supplier

Methoxy content primarily influences the gel temperature and solubility of the HPMC. A higher methoxy level generally leads to a lower gel temperature. Hydroxypropyl content is crucial for water retention and thermal stability; a higher percentage increases the gel temperature and improves the ability of the product (like mortar) to hold water, which is critical for hydration and preventing cracks.

Viscosity is a measure of thickening power. A high viscosity like 200,000 cps provides significant thickening with a small addition rate. In paints, it prevents sagging and splattering. In mortars, it provides body, prevents segregation of sand and cement, and enhances anti-sag properties for vertical applications like tile adhesives. The choice of viscosity is critical to achieving the desired rheology of your product.

Gel temperature is the point at which an HPMC solution turns into a semi-solid, reversible gel upon heating. This property is vital for applications exposed to heat. For example, in machine-sprayed mortars, a suitable gel temperature ensures the mortar sticks to the wall without running. In ceramic extrusion, it provides green strength to the extruded body before firing.

Absolutely. Our hydroxy methyl propyl cellulose is designed for excellent compatibility with common additives used in construction and coatings, including Redispersible Polymer Powders (RDP), air-entraining agents, defoamers, and superplasticizers. We can provide guidance on formulation to ensure optimal synergy between all components.

HPMC is a hygroscopic powder, meaning it will absorb moisture from the air. To maintain its quality and performance, it must be stored in its original, unopened packaging in a cool, dry place away from direct sunlight and heat sources. Once a bag is opened, it should be resealed tightly to prevent moisture ingress. Our standard packaging is a 25 kg paper bag with a polyethylene inner liner for protection.

Consistency is our top priority. We achieve it through three key pillars: 1) Strict raw material sourcing and pre-testing. 2) A fully automated DCS-controlled production process that minimizes human error. 3) Rigorous Quality Control testing of every single batch for key parameters (viscosity, moisture, ash content, pH, gel temp) before it is approved for release. A Certificate of Analysis (CoA) accompanies every shipment.

The primary difference lies in the level of purity, manufacturing environment, and regulatory compliance. Pharmaceutical grade HPMC is produced in a GMP (Good Manufacturing Practices) facility, has extremely low bioburden and impurity levels, and complies with pharmacopoeia standards (USP, EP). Industrial grade, like our HPMC 200,000 cps, is optimized for performance in materials like mortar and paint, focusing on physical properties like water retention and thickening, and is produced under ISO standards, which are rigorous but different from GMP.