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Chapter 1

What is HPMC ?

Hydroxypropyl Methylcellulose (HPMC) is a versatile, high-performance chemical compound used in various industries, with primary applications in construction. It is a white, odorless, and tasteless powder derived from cellulose. When dissolved in cold water, HPMC forms a transparent gel-like substance. Its unique properties, such as thickening, emulsifying, film-forming, and water retention, make it an essential ingredient in construction additives like gypsum-based mortars, cement-based mortars, and lime-based mortars.
CAS No.:9004-65-3

Chapter 2

Advantages of Ball HPMC

Enhanced Workability

Provides superior lubrication, improving the workability and processing efficiency of cement-based and ceramic-based materials.

Superior Thickening

Increases the viscosity of formulations in chemical products, ensuring consistency and better application performance.

Excellent Suspension

Enhances the dispersion and stability of suspension systems, making it ideal for use in concrete, mortar, and EIFS (Exterior Insulation and Finish System) applications.

Optimal Water Retention

Prevents rapid water loss during drying, ensuring adequate hydration and improving the durability of cement, lime, and gypsum-based materials.

Extended Working Time

Prolongs open time during application, offering greater flexibility and more time for adjustments and corrections.

Cost Efficiency

Reduces material costs by allowing for higher output volumes due to its high water demand, which increases material yield.

Chemical Stability

Compatible with various ionic and non-ionic additives, ensuring stable and consistent performance in different formulations.

Wide pH Stability

Maintains stability across a broad pH range (3.0 to 11.0), with enhanced solubility in alkaline conditions, making it versatile for various applications.

Eco-Friendly Production

Adheres to stringent environmental and safety standards, ensuring not only effective but also safe and environmentally responsible.

Chapter 3

HPMC Specification

ItemHPMC Specification
AppearanceWhite or off-white powder
Fineness / %≤8.0
Dry Weight Loss / %≤6.0
Sulfate Ash Content / %≤2.5
Viscosity / mPa.s400mPa.s–200000mPa.s
pH Value5.0-9.0
Transmittance / %≥80
Gel Temperature / ℃70.0±3
Methoxyl Content %19.0-24.0
Hydroxypropyl Content %4.0-12.0
Cellulose production plant
product type: low viscosity, high viscosity, hot soluble type, instant soluble type

Chapter 4

Our HPMC Improve Effects at Various Scenarios

Enhances bond strength, workability, and water retention. Provides longer open times and excellent sag resistance for durable, strong tile adhesion.

Wall Putty/Skim Coat

Ensures superior workability, crack prevention, and smooth finish. Extends working time and enhances adhesion for a durable surface.

Plasters And Renders

Improves consistency, workability, and adhesion. Prevents rapid drying and cracking for a long-lasting, smooth finish.

Self-Leveling

Enhances flow and leveling. Ensures smooth, flat surfaces with consistent curing and reduced defects.

Joint Compound

Provides excellent workability and extended working time. Enhances adhesion and flexibility for a smooth, durable seal.

Paints And Coatings

Improves viscosity and stability. Ensures uniform application, smooth finish, and extended workability for durability.

Chapter 5

HPMC Production Process

⁄01​

Raw Material Preparation​

Refined Cotton: Crushed in a closed pulverizer, recovered via a cyclone separator, and accurately weighed. Dust emissions are filtered through a bag filter.
Sodium Hydroxide Solution: Prepared at 50-60% concentration, heated to 80°C, then cooled to 36-40°C for use.
Methyl Chloride: Pumped into high-level metering tanks (purity ≥99.5%).
Propylene Oxide: Pumped into high-level metering tanks (purity ≥99.5%).
Hot Water: Cold water heated to 95-100°C, used in the reaction kettle.

⁄02​

Cellulose Preparation​​

Loading the Reactor: Refined cotton powder added to a 15m³ reactor, vacuum-sealed to -0.098MPa.
Alkali Addition: Alkali solution sprayed into the reactor, ensuring thorough mixing with the cotton powder.
Methyl Chloride Addition: Added and condensed, maintaining reactor temperature at 30-40°C for 10 minutes.
Propylene Oxide Addition: Added under cooling and stirring for 5-15 minutes.
Heating Phase: Reactor temperature increased to 50±2°C and pressure to 1.0-1.1MPa for 1.5 hours, then to 68°C and pressure to 1.7-1.75MPa for 2 hours.

⁄03​

Gas Phase Recovery​​

Primary Recovery: Gas transferred to a condenser and stored.
Hot Water Addition: 2m³ of hot water added, followed by a second gas recovery.
Distillation: Methyl chloride distilled, purified, and reused; non-condensable gases treated with activated carbon.

⁄04​

Neutralization and Washing

Steam is introduced into the reactor to pressurize it to ≥0.2MPa. The material is transferred to a neutralization kettle, where hot water (approximately 3m³) and hydrochloric acid are added to adjust the pH. This process mainly produces wastewater containing chlorides, COD, BOD5, and SS.

⁄05​

Centrifugation

Washed cellulose is transferred to a centrifuge for solid-liquid separation. The solid is sent to the drying process, producing wastewater containing chlorides, COD, BOD5, and SS.

⁄06​

Drying

The cellulose is air-dried and pulverized to achieve the desired particle size. Dust-laden exhaust gases are treated with a bag filter before being discharged.

Chapter 6

Superior HPMC: Quality You Can Trust






Built to Perform, Tested to Last

To ensure that every batch of HPMC meets the highest standards, we rigorously test and inspect our products before they leave our factory. Our quality assurance process is designed to provide you with a reliable and consistent product, every time.

Precision Fineness

Our HPMC meets stringent particle size standards, ensuring smooth blending and maximum efficiency in your applications.

Controlled Moisture

With moisture content strictly kept below 6%, our HPMC is always ready to perform, ensuring stability and reliability.

Low Sulfate Ash

We guarantee a sulfate ash content below 2.5%, providing you with a pure product that performs without leaving unwanted residues.

Consistent Viscosity

Tested to meet exact viscosity specification, ensuring consistent results in every application, from adhesives to mortars.

Balanced pH

With a pH level between 5.0 and 9.0, our HPMC integrates smoothly with your materials, preventing chemical issues.

High Water Retention

Our HPMC retains over 90% of water, enhancing workability and ensuring superior curing strength in your construction product.

Chapter 7

How to Select the Ideal HPMC for Your Building Materials?

Tailored Viscosity: The viscosity of HPMC plays a crucial role in its application. For thickening and water retention in cement-based mortars, opt for higher viscosity. For applications where smooth flow and easy leveling are key, like in self-leveling compounds, a lower viscosity HPMC will be your best bet.

Perfect Solubility: Look for an HPMC that dissolves effortlessly in cold water, forming a clear, homogenous gel. This ensures your product’s performance is consistent and reliable.

Seamless Compatibility: Ensure your HPMC integrates flawlessly with other ingredients in your formulation. Our HPMC is engineered to be the perfect partner in a variety of mixes, ensuring consistent results every time.

Optimized Workability: Whether you need extended open time, improved workability, or faster setting, our HPMC products offer customizable solutions tailored to your specific needs.

Versatility Across Applications: From cement-based mortars to tile adhesives, our HPMC enhances a wide range of products, delivering superior performance, durability, and ease of use.

Chapter 8

Frequently Asked Questions

Find answers to commonly asked questions about our products and services.

Chapter 9

In Summary

Our HPMC isn’t just an additive, it’s a strategic investment in the success of your brand. By enhancing the quality, reliability, and sustainability of your construction materials, our HPMC helps you deliver superior products that your customers will trust. Whether you’re targeting Southeast Asia, the Middle East, South America, or Africa, partnering with us means you’re choosing a supplier who understands the unique demands of your market and is committed to helping you succeed.


Elevate Your Brand with Superior HPMC Solutions!

Don’t settle for average when your business deserves the best. Partner with us to enhance the quality and performance of your construction products. Our cutting-edge HPMC is designed to give you the competitive edge you need in today’s demanding market.

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