| 摘要 |
An object of the present invention is to provide a process for the production of low-substituted hydroxypropyl cellulose wherein, in the formation of low-substituted hydroxypropyl cellulose particles, a granular material obtained by granulating the reaction product is neutralized with an acid to form neutralization-precipitated particles of low-substituted hydroxypropyl cellulose which can reduce the treating time as compared with conventional processes and, moreover, permit its ash content to be easily decreased in a subsequent washing step. Specifically, the reaction product of an alkali cellulose with a hydroxypropylating agent is granulated, and the resulting granular material is neutralized with an acid.
|
