公开(公告)号：US20220153879A1

公开(公告)日：2022-05-19

申请号：US17441356

申请日：2020-03-05

申请人： NIPPON PAPER INDUSTRIES CO., LTD.

发明人： Masato Takayama ,  Sakiko Nakada ,  Yuki Takahashi ,  Shisei Goto ,  Hiroyoshi Suzuki

IPC分类号： C08B11/12

摘要： Provided is a fibrillated chemically modified cellulose fiber, which has a type-I cellulose crystallinity of at least 50%, an anionic charge density of 0.10-2.00 meq/g, and an average fiber diameter of greater than 500 nm. Also, provided is a fibrillated chemically modified cellulose fiber, wherein the value (A/B) obtained by dividing the viscosity A measured at a shear rate of 0.01/sec by the viscosity B measured at a shear rate of 1000/sec in an aqueous dispersion having a solid content of 1 mass % is at least 100. These fibers have high water retention and high thixotropy.

公开(公告)号：US20210079173A1

公开(公告)日：2021-03-18

申请号：US17056303

申请日：2019-05-17

申请人： NIPPON PAPER INDUSTRIES CO., LTD.

发明人： Kazuhiko Inoue ,  Hiroyoshi Suzuki ,  Kasumi Nishigaya ,  Masato Takayama ,  Sakiko Nakada ,  Yuki Takahashi ,  Shisei Goto

IPC分类号： C08J3/12 ,  D21H13/04 ,  A61K9/20 ,  A61K9/48 ,  A23K20/163 ,  A61K8/73

摘要： This pulverized product of carboxymethylated pulp has a carboxymethyl substation degree of 0.50 or less and a cellulose-I crystallinity index of 50% or more. This additive contains the pulverized product. Preferably, the carboxymethylated pulp is produced by performing a mercerization reaction in a solvent mainly containing water, and then performing a carboxymethylation reaction in a mixed solvent containing water and an organic solvent, and is fibrillated by wet pulverization.