Title:
PRODUCTION OF MICROFIBRILLATED CELLULOSE
Document Type and Number:
Japanese Patent JP3478083
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To produce a method for producing a microfibrillated cellulose (MFC)- dispersed liquid suitably usable for manufacturing a sheet-shaped resin high in water-absorbing property (SAP) without using any thickening process and capable of stably keeping the dispersed cellulose in the solvent for a long term without causing any agglomeration therein.
SOLUTION: This method is carried out by dispersing a fibrous or particulate cellulose in a dispersion medium comprising mixture solvent of a water- compatible organic solvent and water, followed by microfibrillating it by using a grain plate lapping machine comprising a plurality of grain plates 1 and 2 allowed to slide in contact with each other and made of grains having a granularity of 16 to 120 size (JIS R 6001). Preferably, the weight ratio of the organic solvent to water in the mixed solvent falls into the range of (50:50) to (10:90). An MFC-dispersed mixed solvent liquid apart from rot can be obtained by using a microbicidal organic solvent. When the microfibrillation treatment is conducted under a cooling condition, it prevents a selective volatilization of the organic solvent in the mixed solvent.
Inventors:
Ken Takami
Application Number:
JP27432697A
Publication Date:
December 10, 2003
Filing Date:
October 07, 1997
Export Citation:
Assignee:
Tokushu Paper Co., Ltd.
International Classes:
C08B15/00; D21D1/30; (IPC1-7): C08B15/00; D21D1/30
Domestic Patent References:
| JP10248872A | ||||
| JP10168230A |
Other References:
【文献】特許3036354(JP,B2)
Attorney, Agent or Firm:
Yukio Omata