The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 07, 2013
Filed:
Feb. 15, 2008
Naoki Nojiri, Wakayama, JP;
Masahiro Umehara, Wakayama, JP;
Tomohito Kitsuki, Wakayama, JP;
Munehisa Okutsu, Wakayama, JP;
Keiichiro Tomioka, Wakayama, JP;
Naoki Nojiri, Wakayama, JP;
Masahiro Umehara, Wakayama, JP;
Tomohito Kitsuki, Wakayama, JP;
Munehisa Okutsu, Wakayama, JP;
Keiichiro Tomioka, Wakayama, JP;
Kao Corporation, Tokyo, JP;
Abstract
The present invention relates to a process for producing a decrystallized cellulose having a reduced cellulose I-type crystallinity from a cellulose-containing raw material in an efficient manner with an excellent productivity. In accordance with the present invention, there is provided a process for producing a decrystallized cellulose from a raw material comprising at least 20% by weight, based on the weight of the raw material excluding water contained therein, of a cellulose having a cellulose I-type crystallinity of more than 33% as calculated from the following formula:Cellulose-type Crystallinity (%)=[()/]×100wherein Iis a diffraction intensity of a lattice plane (002 plane) as measured at a diffraction angle 2θ of 22.6° in X-ray diffraction analysis; and Iis a diffraction intensity of an amorphous moiety as measured at a diffraction angle 2θ of 18.5° in X-ray diffraction analysis, the process including the step of treating the cellulose-containing raw material using a media-type mill to reduce the cellulose I-type crystallinity of the cellulose to 33% or less, wherein the cellulose-containing raw material has a bulk density of from 100 to 500 kg/m.