Process for producing low dp microcrystalline cellulose

Abstract From the Canadian patent

A process for producing microcrystalline cellulose. The process comprising the following steps: a) preparation of a pulp by repulping; b) pressing of the pulp obtained in a); c) decompaction of the pulp obtained in b); d) feeding of the pulp obtained in c) into a pre-heated reactor; e) cooking of the pulp at a temperature, a time and a pressure allowing to obtain a pulp having a desired degree of polymerisation; f) cooling and partial controlled depressurisation of the reactor by purging the reactor, followed by a water injection into the jacket and directly into the reactor; g) filtering the pulp obtained in f); h) bleaching of the pulp obtained in g), and i) drying the pulp …