公开(公告)号：US20190381820A1

公开(公告)日：2019-12-19

申请号：US16478161

申请日：2018-01-24

Applicant: NIPPON SODA CO., LTD.

Inventor： Shuntaro KINOSHITA ,  Kayoko TADA ,  Hiroshi SAKAI ,  Kazumi HAMAKAWA

IPC: B41M5/333 ,  B41M5/50 ,  B41M5/337

Abstract: A recording material and a recording sheet having better color-developing performance, storage stability, etc. A recording material which contains (A) at least one color former, (B) at least one compound selected from the group including compounds represented by the following formula (I), and (C) at least one compound selected from the group including compounds represented by the following formula (II)(wherein R1 to R3 each represent a halogen atom, a nitro group, a C1 to C6 alkyl group, a C1 to C6 alkoxy group, a C2 to C6 alkenyl group or a C1 to C6 haloalkyl group, n1 and n3 each independently represent any integer of 0 to 5, n2 represents any integer of 0 to 4, and X represents —SO2—O— or —O—SO2—).

公开(公告)号：US20200086669A1

公开(公告)日：2020-03-19

申请号：US16617442

申请日：2018-06-01

Applicant: NIPPON SODA CO., LTD.

Inventor： Hiroshi SAKAI ,  Kayoko TADA ,  Shuntaro KINOSHITA

IPC: B41M5/155 ,  B41M5/333 ,  C07C275/34 ,  C07C309/73

Abstract: An object of the present invention is to provide a recording material or a recording sheet using, as a color-developing agent, a non-phenol-based compound good in color developing performance and the like. A compound represented by the following formula (I) is used as the color-developing agent: (wherein X represents CH2 or the like; R1 to R3 each independently represent a hydrogen atom, a halogen atom or the like; n1 and n3 each independently represent any integer of 1 to 5; two groups represented by R3 adjacent to each other on a benzene ring optionally bond to each other to form an optionally substituted 6-membered ring; and n2 represents any integer of 1 to 4).

公开(公告)号：US20180022137A1

公开(公告)日：2018-01-25

申请号：US15546202

申请日：2016-01-27

Applicant: NIPPON SODA CO., LTD.

Inventor： Shuntaro KINOSHITA ,  Kazumi HAMAKAWA ,  Hiroshi SAKAI ,  Kayoko TADA

IPC: B41M5/337 ,  B41M5/333 ,  C09B11/24 ,  B41M5/327

CPC classification number: B41M5/3375 ,  B41M5/3275 ,  B41M5/3333 ,  B41M5/3336 ,  C09B11/24 ,  C09B11/28 ,  D21H27/00

Abstract: An object of the invention is to provide a recording material and recording sheet having excellent color-developing performance, storage stability, etc. A recording material having good color-developing performance and storage stability may be obtained by using a specific compound having a benzhydrol skeleton as an additive in a recording material employing color development through a reaction between a color former and a color-developing agent.