| 摘要 |
PROBLEM TO BE SOLVED: To obtain a cellulose ether neither dusting nor forming undissolved lump of powder, quickly dissolvable, having excellent wettability with water, useful as a humectant, etc., by gelling a water-soluble cellulose ether with a cross-linking agent and an acid, drying the gel, adding a wetting agent and grinding the gel under specific conditions. SOLUTION: A water-soluble cellulose ether such as methyl cellulose, etc., is mixed with preferably 0.02-0.5 wt.% of a cross-linking agent such as formaldehyde, etc., and preferably 0.02-0.8 wt.% of an acid such as glycolic acid, etc. The water-soluble cellulose ether is gelled, dried, mixed with preferably 0.01-1.0 wt.% (based on the granular water-soluble cellulose ether) of a wetting agent such as propylene glycol, etc., ground and a granule comprising <=30 wt.% of a content having a particle size passing 30 meshes and <=30 wt.% of a content having a particle size not passing 200 meshes is obtained to give the granular water-soluble cellulose ether.
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