Application
● HPMC (Hydroxypropyl Methylcellulose)
● MHEC / HEMC (Methyl Hydroxyethyl Cellulose / Hydroxyethyl Methylcellulose)
Wall putty, also known as skim coat, is a thin finishing layer applied to walls before painting or wallpapering. It provides a smooth, uniform surface and improves adhesion for top coatings. To ensure excellent workability, crack resistance, and long-lasting performance, modern wall putty formulations rely heavily on cellulose ethers like HPMC and MHEC.
At Hehui Chemical, we offer high-purity HPMC and MHEC products that are specifically engineered for use in cement-based and gypsum-based skim coats. Our additives enhance every aspect of the application process — from mixing to final finish.
Water Retention
Maintains adequate moisture during setting, allowing better cement hydration and preventing surface cracks or premature drying.
Workability Enhancement
Improves spread ability, smoothness, and ease of troweling — especially important for thin layers.
Open Time & Application Efficiency
Longer open time means fewer interruptions and more efficient on-site performance.
Anti-Sagging and Thixotropy
Improves vertical hold and consistency, allowing thick applications without dripping or sagging.
Surface Quality
Ensures a fine, pinhole-free finish that boosts paint adhesion and final appearance.
High viscosity stability and purity
Excellent compatibility with white cement and gypsum
Tailor-made grades for tropical and cold climate performance
Reduced air-entrainment for smoother surface
Produced in ISO-certified factories with advanced technology
Step 1: Preparation of Base Materials
Begin by preparing the dry ingredients of the wall putty, which typically include binders (like cement or gypsum), fillers (such as calcium carbonate), and other additives.
Step 2: Mixing HPMC & MHEC
Both HPMC and MHEC should be added to the dry mix in appropriate quantities based on the desired properties of the final product (usually around 1-3% by weight of the dry mix).
HPMC: Add HPMC to enhance water retention and improve the adhesion of the putty.
MHEC: Add MHEC to improve workability, viscosity, and reduce shrinkage.
Step 3: Hydration of the Mixture
Slowly add water to the dry mix while stirring to ensure proper dispersion of HPMC and MHEC.
The water should be added gradually to avoid clumping and ensure a smooth, uniform paste.
Step 4: Mixing and Homogenization
Continue mixing the paste until the mixture reaches a smooth, homogenous consistency. The consistency should be thick enough to stay in place when applied to vertical surfaces, but also smooth enough to spread easily.
Step 5: Application on Walls
Apply the putty mixture to the wall surface using a trowel or putty knife. The mixture should be spread evenly across the surface, filling in any cracks, holes, or imperfections.
Use a smoothing tool to create a smooth and even finish.
Step 6: Drying and Curing
Allow the wall putty to dry and cure for the recommended period, ensuring it hardens to a solid finish. This may take several hours to a day depending on environmental conditions.
Residential and Commercial Buildings: Wall putty is commonly used to create smooth, even surfaces for painting or wallpapering in both residential and commercial spaces. The inclusion of HPMC and MHEC improves the quality of the finish, making the application more efficient and ensuring long-lasting results.
Surface Smoothing: Wall putty with HPMC and MHEC is applied to smooth out rough walls, patch up cracks, and fill gaps. This is crucial for achieving a flawless paint finish, as the putty creates an ideal base layer.
Durability Enhancement: The addition of HPMC and MHEC in wall putty increases the longevity of the finish by preventing issues like cracking, peeling, or flaking over time. This is particularly useful in high-humidity areas such as kitchens and bathrooms.
Cost-Effective Surface Preparation: Using HPMC and MHEC in wall putty ensures that the material spreads easily and provides better coverage. This reduces the need for multiple layers, saving on material costs and time.
Eco-Friendly Construction: In eco-conscious building projects, wall putty containing HPMC and MHEC can contribute to the overall sustainability of the project, as these cellulose ethers are biodegradable and non-toxic.
Packaging: 25kg kraft bags with inner PE liner
Shelf Life: 2 years under dry, sealed conditions
Storage: Avoid direct contact with moisture and store in a cool, dry place
As a leading manufacturer of HPMC and MHEC for wall putty, we provide not only products but also technical support to help you formulate high-performance, cost-effective putty for every market.
Let us help you develop better-performing wall putty solutions!
Advanced Production Facilities: With two strategically located production plants and a modern DCS-controlled production line, Hehui ensures consistent and high-quality products for wall putty manufacturing.
Expertise and Innovation: With over 15 years of experience in cellulose ether production, Hehui has refined its products to meet the specific needs of industries like construction, including wall putty.
Global Supply Chain: Hehui serves clients in over 20 countries, ensuring that their high-performance products are available globally for a wide range of applications.
Quality Assurance: Each batch of HPMC and MHEC is rigorously tested in Hehui’s in-house lab, ensuring compliance with international standards and consistency in quality.
Customer Support: Hehui offers technical assistance and tailored solutions for clients, providing expert guidance to achieve the best results in wall putty formulation.
1. Hehui Chemical's HPMC significantly improves water retention in interior wall putty, preventing premature drying and ensuring optimal curing for smooth and durable surfaces.
2. The cellulose ether additives enhance workability, allowing easy application with minimal lumps and excellent spreadability.
3. HPMC increases adhesion and flexibility, reducing the risk of cracking on interior walls.
4. Ideal for producing high-quality interior wall putty that delivers a fine finish and long-lasting performance.
1. HEMC offers superior water retention properties in exterior wall putty formulations, maintaining hydration in harsh weather conditions.
2. Cellulose ethers improve the flexibility and adhesion of exterior wall putty, enhancing resistance to cracking and weathering.
3. These additives contribute to the durability and protective qualities of coatings applied on outdoor surfaces.
4. Perfect for exterior wall putty designed to withstand environmental stresses and extend the lifespan of building facades.
1. Cellulose ethers like HPMC and HEMC enhance water retention and rheological properties in skim coat formulations, enabling smooth, lump-free application.
2. These additives improve workability and sag resistance, which is essential for vertical surfaces and ceilings.
3. They increase adhesion and flexibility, helping prevent cracks and enhancing durability.
4. Suitable for both interior and exterior skim coats requiring smooth, high-quality finishes.
1. Hehui's advanced cellulose ethers provide tailored water retention and viscosity control for specialty wall putty formulations used in demanding applications.
2. These additives deliver enhanced crack resistance and superior adhesion on challenging substrates such as gypsum boards or moisture-prone surfaces.
3. They optimize flow and leveling properties, ensuring a smooth and uniform finish even in specialized environments.
4. Designed for premium specialty wall putty products used in renovation, waterproofing, and high-performance decorative coatings.
Hydroxypropyl Methylcellulose (HPMC) is a non-ionic, water-soluble polymer derived from natural cellulose. At Hehui Chemical, we manufacture high-purity HPMC designed to meet the demanding needs of dry mix mortars, water-based paints, and household detergent formulations.
MHEC, also known as HEMC (Hydroxyethyl Methylcellulose), is a versatile cellulose ether widely used in construction materials and water-based Paint &coatings. As a modified cellulose ether, MHEC offers excellent water retention, thickening, and rheology control properties, making it a vital ingredient in products like tile adhesives, dry mix mortars, wall putty, gypsum plaster, and waterborne paints.
Hehui Hydroxyethyl Cellulose HEC Powder is a non-ionic, water-soluble cellulose ether designed to deliver excellent thickening, stabilization, and water retention across a wide range of industries. Made from high-purity natural cellulose, our HEC is ideal for water-based formulations in paints, coatings, construction materials, personal care products, and oilfield chemicals.
Carboxymethyl Cellulose (CMC) is an anionic water-soluble polymer derived from refined cellulose. It is widely used as a thickener, stabilizer, binder, water retention agent, and film-forming agent.
Looking for customized CMC solutions for your industry?
Contact our technical team to find the right grade for your application.
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