Methocel

Methocel is a brand name for a line of cellulose ether polymers manufactured by The Dow Chemical Company. These polymers are primarily derived from methylcellulose and hydroxypropyl methylcellulose (HPMC). They are water-soluble and widely used in various industrial and consumer applications due to their thickening, binding, film-forming, and water-retention properties.

The production of Methocel involves chemically modifying cellulose, a natural polymer found in plant cell walls. The specific modifications result in different grades of Methocel, each with unique properties. For example, varying degrees of substitution and molecular weights influence viscosity, gelation temperature, and solubility.

Key applications for Methocel include the construction industry, where it is used as a mortar additive to improve workability and water retention in cement-based products like tile adhesives and grouts. In the pharmaceutical sector, it serves as a binder and controlled-release agent in tablet formulations and as a viscosity modifier in eye drops and oral suspensions. The food industry utilizes Methocel as a thickener, stabilizer, and emulsifier in products such as sauces, ice cream, and baked goods. It is also found in personal care products like shampoos and lotions for its thickening and conditioning effects. Methocel is generally considered safe for its intended uses and is regulated by various food and drug administrations worldwide.