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About Us

D&J Chemicals was founded in 2013, the enterprise is located in Jinzhou Economic Development Zone, Hebei Province. It covers an area of more than 27,000 square meters and has an annual yield of 10,000 tons of methyl cellulose.

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Contact Info

  • Shijiazhuang City, Hebei Province, China
  • 8615232102780
  • [email protected]
  • GMT+8 Monday - Friday: 09:00AM - 06:00PM

Properties of building grade hydroxypropyl methylcellulose (HPMC)

  • Solubility: HPMC is soluble in water and some organic solvents, even in cold water. The maximum concentration is determined by viscosity, with solubility increasing as the viscosity decreases.
  • Salt resistance: HPMC is a non-ionic cellulose ether and exhibits stability in aqueous solutions containing metal salts or organic electrolytes. However, excessive addition of electrolytes can cause coagulation and sedimentation.
  • Surface activity: The aqueous solution of HPMC displays surface activity, allowing it to function as a colloidal protective agent, emulsifier, and dispersant.
  • Thermal gel: Upon heating, the aqueous solution of HPMC becomes opaque, gels, and forms a precipitate. However, upon cooling, it reverts back to its original solution state. The gel and precipitation temperature depend on the presence of lubricants, suspending agents, protective colloids, emulsifiers, and other factors.
  • Mildew resistance: HPMC exhibits good mildew resistance and maintains viscosity stability during long-term storage.
  • pH stability: The viscosity of HPMC aqueous solution remains relatively unaffected by acid or alkali, demonstrating stability in the pH range of 3.0 to 11.0.
  • Shape retention: The addition of highly concentrated HPMC aqueous solution enhances the viscoelastic properties and improves the shape retention of extruded ceramic products.
  • Water retention: HPMC for construction functions as an efficient water retention agent due to its excellent hydrophilicity and high viscosity in aqueous solutions.