Hydroxypropyl Methylcellulose (HPMC) is a non-ionic, semi-synthetic cellulose ether widely recognized as a critical performance-enhancing additive in modern construction chemicals. Derived from natural cellulose—typically cotton linters or wood pulp—HPMC undergoes controlled etherification using methyl chloride and propylene oxide. This chemical modification replaces hydroxyl groups along the polymeric chain with methoxy and hydroxypropyl functional groups, transforming […]