Cellulose ethers are cellulose derivatives produced by reacting natural α-cellulose with various etherifying agents under specific conditions. Primary products include HPMC, CMC, HEC, HPC, MC, and others. Enhancing the applications and performance of cellulose ethers remains a primary focus of ongoing research.

Water-soluble cellulose ether possesses properties such as thickening, suspension, film-forming, and emulsification. It exhibits excellent resistance to acids and salts, making it widely used in industries including construction, cement, oildrilling, food, textiles, detergents, coatings, pharmaceuticals, papermaking, and mineral processing.