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METHOCEL™ K4M Premium is a high-purity HPMC thickener that provides a viscosity of 4,000 cPs at 2% in water and is used in coatings and ceramics.
METHOCEL™ K4M Premium is a high-purity cellulose-based powder used as a thickener in water-based formulations and as a binder in ceramic applications. When added to water at 2%, it forms a solution with a viscosity of approximately 4,000 cPs. METHOCEL™ K4M Premium, which is a HPMC thickener, is manufactured by treating cellulose with methyl chloride and propylene oxide to provide a moderate degree of hydroxypropyl substitution on the cellulose polymer backbone. Compared to the standard METHOCEL™ K4M, this grade contains fewer impurities for applications that require regulatory approvals. Solutions made with METHOCEL™ K4M Premium are thixotropic and easy to spread and have good lubricity. It is commonly used in coating and ink formulations to control viscosity and may also be used as a binder in ceramic applications to increase green strength.
Methoxyl, %: 19.0–24.0
Hydroxypropoxyl, %: 7.0–12.0
Viscosity (2% in water at 20°C) cPs: 3,500–5,600
Sulfated ash, %: ≤1.5
Moisture (loss on drying), %: ≤5.0
Residue on ignition, %: ≤1.5
Primary Chemistry:
Hydroxypropyl methylcellulose (HPMC)
Ceramic defects caused by poor green strength of ram- or screw-extruded ceramic parts Decrease in viscosity associated with temperature Poor storage stability of acidic or alkaline cleaning products or detergents Sagging or dripping of paints or coatings applied to vertical or overhead surfaces Loss of viscosity with thickeners that are not stable in wide pH ranges
METHOCEL™ K4M Premium is used in a wide range of industrial applications, such as ceramics, cleaners, and coatings. For more information about METHOCEL™ K4M Premium and its applications and functionality, check out our dedicated website for cellulosic rheology modifiers here!
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