what is wall putty ?
Wall putty is a white cement-based powder used for leveling and smoothing of interior and exterior walls before painting. It is a fine powder made of white cement, lime, and other additives like polymer, water retention agents, and fillers.
Wall putty is applied to walls as a thin layer, usually 1-2 mm thick, using a putty knife or a trowel. It fills minor cracks, dents, and pores on the wall surface and provides a smooth and uniform finish. It can be used on a variety of surfaces, including plasterboard, concrete, brickwork, and gypsum board.
The primary functions of wall putty are:
Leveling and smoothing the surface of the wall before painting or wallpapering.
Improving the adhesion of the paint or wallpaper to the wall surface.
Covering minor cracks and dents on the wall surface.
Enhancing the durability of the paint and extending its lifespan.
Wall putty can be used on both interior and exterior walls, and it is available in two forms: powder form and ready-mixed paste form. It is important to choose the right type of wall putty for the specific wall surface and application to achieve the desired results.
Product Name：HPMC (Hydroxypropyl methyl cellulose)
CAS No.：9004-65-3
HS Code：3912390000
Appearance：Powder
Package：25kg / bag, kraft paper bag or as requested
pH Value: 6-8
Graininess: 98% pass 80 mesh
Hydroxypropyl methyl cellulose(HPMC) is are ethers of cellulose and propylene oxide. It is easily soluble in cold water but not soluble in hot water. It is a non-ionic
cellulose ether and is compatible with many surfactants and polymers such as starch, guar and alginates.
some solutions show thixotropy.
Hydroxypropyl methylcellulose polymers are well-known for their ability to bind, retain water, thicken, form films, and provide many other performance benefits.
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Product name
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Hydroxy propyl methyl cellulose (HPMC)
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Physical Form
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White to off-white powder
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Viscosity (2% mPa.S)
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50000-200000
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Hydroxypropoxyl Conent %
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4.0-12.0
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Methoxyl content(wt%)
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19.0-30.0
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pH Value 2%
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5.0-8.0
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Gel temperature ℃
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70-90
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NaCl（%）
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≤0.2
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Moisture Content, %
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5% max
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Ash, %
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1.5% max
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Function
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Water Retention, High Adhesive,Anti-slip,Excellent Workability
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Package
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25kg/bag,OEM&ODM are accepted
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HPMC increased with methoxy content reduce, the gel point water solubility and surface activity also declind, depends on customer's situation.
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HPMC (Hydroxypropyl Methylcellulose) is commonly used in wall putty as a key ingredient.
HPMC is a type of cellulose ether that can provide various benefits to wall putty formulations, such as:
Improved workability: HPMC can help to improve the workability of wall putty by providing better spreadability, leveling, and smoothing.
Water retention: HPMC can help to retain the water content in wall putty for a longer time, which can improve its setting time and bonding strength.
Improved adhesion: HPMC can enhance the adhesion of wall putty to the surface of walls, preventing it from peeling off or cracking.
Reduced shrinkage: HPMC can reduce the shrinkage of wall putty during the drying and curing process, which can help to prevent cracks from forming.
Better resistance to sagging: HPMC can improve the sag resistance of wall putty, making it suitable for vertical applications.
In summary, HPMC can provide various benefits to wall putty formulations, such as improved workability, water retention, adhesion, reduced shrinkage, and better sag resistance.
