Carboxymethyl cellulose (CMC) or cellulose gum is a cellulose derivative with carboxymethyl group in its chain. CMC is a physiologically inert, chemically stable, odorless and tasteless substance which safe for health and environment. The other properties of CMC include high viscosity, non-toxic nature, and hypoallergenic. Major raw materials used in the manufacture of carboxymethyl cellulose (CMC) include plant-derived cellulose, caustic soda, and monochloroacetic acid. CMC is widely used as thickener, stabilizer, binder and dispersant in variety of applications such as food and beverages, pharmaceutical and cosmetics, detergents, oil and gas, paper processing and others.
Polyanionic cellulose (Polyanionic cellulose) referred to as PAC, is from natural cellulose by chemical modification and the obtained water-soluble derivatives of cellulose ethers, is an important water-soluble cellulose ether, white or slightly yellow powder, non-toxic, tasteless, it can be dissolved in water, have good heat stability, and salt-tolerance, anti-bacterial and strong. The product slurry prepared with a good drop of fluid loss, and suppression, of a higher temperature.
Widely used in Oil drilling fluid control additives, especially in salt water wells and offshore oil drilling.
It is a combined filtration controller and minimal viscosifier in fresh and salt water based drilling systems. It is ideal in low solid mud, designed for fast penetration