Hydroxypropyl methylcellulose (HPMC) is a common cellulose derivative, widely used in medicine, food, building materials, daily chemicals and other fields. It has stable chemical properties and excellent performance. The main performance characteristics of HPMC will be discussed in detail below.

1. Chemical structure and basic properties

1.1. Chemical structure
Hydroxypropyl methylcellulose is made from natural cellulose by alkalization and etherification. Its chemical structure can be expressed as:

C6H7O2(