Kao Corporation

Kohei Nakanishi

Munehisa Okutsu

Takeshi Ihara

Keiichiro Tomioka

Masahiro Umehara

Akiyoshi Kimura

Yoichiro Imori

Masafumi Miyamoto

Masanori Takai

Naoki Nojiri

Toru Nishioka

Hideki Goto

Tomoya Wada

A production method of a cationized cellulose or a cationized hydroxyalkylcellulose, including step 1 for adding a cationizing agent to cellulose and mechanically decrystallizing the cellulose and step 2 for adding a basic compound to the mixture obtained in step 1 and mechanically decrystallizing the cellulose, or a production method of a cationized cellulose or a cationized hydroxyalkylcellulose, including a step 3 for adding a basic compound to cellulose and mechanically decrystallizing the cellulose and step 4 for adding a cationizing agent to the mixture obtained in step 3 and mechanically decrystallizing the cellulose. The cellulose and the cationizing agent are allowed to react with each other in step 2 or step 4.

Method for producing cationized cellulose and method for producing cationized hydroxyalkyl cellulose

The present invention relates to a process for producing a cationic hydroxypropyl cellulose including the step of reacting a low-crystalline powdery cellulose with a cationizing agent represented by the following general formula (1) and/or a cationizing agent represented by the following general formula (2), and propylene oxide in the presence of water in an amount of from 10 to 60% by mass on the basis of the low-crystalline powdery cellulose, and a catalyst: wherein Rto Rare each independently a linear or branched hydrocarbon group having 1 to 4 carbon atoms; and X and Z are each a halogen atom and may be the same or different from each other.

Production method for cationic hydroxypropyl cellulose

Growing community of inventors

Wakayama, Japan

Kohei Nakanishi