Hydroxypropyl methylcellulose (HPMC) is a multifunctional polymer compound. Due to its water solubility, film-forming property, viscosity regulation, water retention and chemical stability, it is widely used in the following multiple fields:
1.Building materials (Main applications)
Cement mortar/gypsum-based products
Water-retaining agent: Prevents excessive evaporation of water, enhances the hydration efficiency of cement, and reduces cracking.
Thickener: Improves workability and anti-sagging property (such as tile adhesive, putty powder).
Retarder: Extends the operable time.
Self-leveling mortar: Regulates fluidity and settlement stability.
External wall insulation system: Used for bonding mortar and plastering mortar to enhance adhesion.
2. Pharmaceutical industry
Tablet coating: Forms a protective film to mask the bitter taste of the drug or control its release (sustained-release preparations).
Adhesive: Helps shape the powder during the tablet pressing process.
Eye drops/artificial tears: As lubricants and thickeners (low-viscosity models).
Gel matrix: Used in local drug delivery systems.
3. Food Industry (E464 Additive)
Thickener/stabilizer: Used in sauces, ice cream, dairy products, etc.
Emulsifier: Helps to mix oil and water (such as in plant protein beverages).
Low-calorie foods: Replace fats or provide dietary fiber.
4. Daily chemicals and personal care
Toothpaste: Thickens and moisturizes, improving a creamy texture.
Shampoo/body wash: Regulate viscosity and stabilize foam.
Skin care products: Film-forming agents and moisturizing ingredients in masks and lotions.
5. Coatings and inks
Water-based coatings: Improve leveling property, anti-splashing property, and delay drying time.
Ceramic printing glaze: As a temporary binder, it completely decomposes during high-temperature firing.
6. Other special uses
Agriculture: Seed coating agent (protecting and slowly releasing fertilizers/pesticides).
3D printing: Adhesives used as supporting materials (such as ceramic 3D printing).
Tobacco: Cigarette paper adhesive, improving combustion uniformity.
Key Advantage
Safe and non-toxic: Complies with pharmaceutical and food grade standards (such as USP, FDA).
Environmentally friendly: Good biodegradability and no pollution.
Versatility: Adapt to different requirements by adjusting parameters such as degree of substitution and viscosity.
Different industries have specific requirements for the specifications of HPMC (such as viscosity and substituent ratio), and the appropriate model should be selected based on the application scenario.
