公开(公告)号：US20240304821A1

公开(公告)日：2024-09-12

申请号：US18280783

申请日：2022-02-21

Applicant: NIPPON PAPER INDUSTRIES CO., LTD.

Inventor： Hiroki SHINDO ,  Yoshito NISHIMORI ,  Hikaru AIMI ,  Masanobu KAWAMURA

IPC: H01M4/62 ,  C08H7/00 ,  C08L97/00

CPC classification number: H01M4/627 ,  C08H6/00 ,  C08L97/005

Abstract: An organic expander for lead storage batteries contains sulfomethylated kraft lignin. The sulfomethylated kraft lignin has an organic S content of 1.5 to 3.8% by mass.

公开(公告)号：US20230038014A1

公开(公告)日：2023-02-09

申请号：US17788417

申请日：2021-03-08

Applicant: NIPPON PAPER INDUSTRIES CO., LTD.

Inventor： Hiroki SHINDO ,  Yoshito NISHIMORI ,  Hikaru AIMI

IPC: H01M4/62

Abstract: An organic expander for lead storage batteries and a method for producing the same wherein: an organic expander for lead storage batteries containing lignosulfonate, in which a content of reducing sugars per solid content is 5% by mass or less of the total, and a content of a substance with a molecular weight of 5,000 or less per solid content is 30% by mass or less of the total; and a method for producing the organic expander for lead storage batteries, the method including a step of subjecting a sulfite cooking black liquor to ultrafiltration treatment using an ultrafiltration membrane to recover a concentrated liquor of the sulfite cooking black liquor obtained.

公开(公告)号：US20250062361A1

公开(公告)日：2025-02-20

申请号：US18707430

申请日：2022-10-25

Applicant: NIPPON PAPER INDUSTRIES CO., LTD.

Inventor： Hiroki SHINDO ,  Yoshito NISHIMORI ,  Hikaru AIMI ,  Masanobu KAWAMURA

IPC: H01M4/62 ,  C08H7/00

Abstract: An organic expander for a lead storage battery includes sulfomethylated kraft lignin, wherein an organic S content contained in the sulfomethylated kraft lignin is more than 3.8 mass % and 5.1 mass % or less.