Hydroxypropyl methylcellulose( HPMC)
Advantages:
1. Water soluble and thickening ability: this product is soluble in cold water, and it can form transparent sticky solution. In organic solvent of dissolved: because it contains a certain amount of hydrophobic methyl, this product is soluble in some organic solvent; it is also soluble in water and organic mixed solvent.
2. Hydroxypropyl methyl cellulose (HPMC) salt resistance: because ion and the polyelectrolytein exists in this product, its metal salt or organic electrolyte aqueous solution is stable.
3. Surface activity: HPMC for daily chemical aqueous solution has the surface activity, ensuring its emulsification, protective colloid and relative stability.
4. Low ash content: because ion exist in this product, in preparation process we can use hot water washing for effective refinement, so its ash content is very low.
5. pH stability: HPMC aqueous solution viscosity in the range of pH3.0-11.0 is more stable.
6. Water retention effect: this product is hydrophilic and its solution has high viscosity.
7. Film-forming property: HPMC can generate strong pliable and transparent sheet, which has the good oil resistance to ester performance.