Title:
リグニンの製造方法、及びリグニン系分散剤
Document Type and Number:
Japanese Patent JP7317509
Kind Code:
B2
Abstract:
To provide a method for manufacturing liquid lignin by omitting a solidification step when separating lignin from kraft digestion black liquid or soda digestion black liquid.SOLUTION: A lignin manufacturing method includes a step of recovering concentrated liquid by subjecting kraft digestion black liquid or soda digestion black liquid to ultrafiltration treatment by using an ultrafilter. A content rate of lignin whose weight average molecular weight is less than 3,000 is 1 to 50% in the concentrated liquid.SELECTED DRAWING: None
More Like This:
| WO/1988/007988 | PORPHYRINS, THEIR SYNTHESES AND USES THEREOF |
| WO/2019/002553 | PROCESS FOR SEPARATING LIGNIN FROM LIGNOCELLULOSIC MATERIALS |
| WO/2011/114058 | METHOD FOR THE DEPOLYMERISATION OF LIGNOCELLULOSIC BIOMASS |
Inventors:
Shigeki Yokoyama
Hikaru Aimi
Hikaru Aimi
Application Number:
JP2019002785A
Publication Date:
July 31, 2023
Filing Date:
January 10, 2019
Export Citation:
Assignee:
NIPPON PAPER INDUSTRIES CO.,LTD.
International Classes:
C07G1/00; B01D61/14; B01D61/16; B01D61/22; C08H7/00; C08L97/00; D21C11/04
Domestic Patent References:
| JP62090389A | ||||
| JP63502674A | ||||
| JP58070894A | ||||
| JP6257088A | ||||
| JP9511180A |
Foreign References:
| US5755830 | ||||
| US20170015692 |
Other References:
Chemical Engineering Journal 157 (2010) 93-99
Attorney, Agent or Firm:
Sakai International Patent Office