Nippon Soda Co., Ltd.

Kayoko Tada

Hiroshi Sakai

Shuntaro Kinoshita

Kazumi Hamakawa

Kazumi Jyujyo

Tadahiro Kondo

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 CHor the like; Rto Reach 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 Radjacent 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).

Recording material and compound

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 Rto Reach represent a halogen atom, a nitro group, a Cto Calkyl group, a Cto Calkoxy group, a Cto Calkenyl group or a Cto Chaloalkyl group, n1 and n3 each independently represent any integer of 0 to 5, n2 represents any integer of 0 to 4, and X represents &#x2014;SO&#x2014;O&#x2014; or &#x2014;O&#x2014;SO&#x2014;). 

Recording material and recording sheet

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.

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 compound that is a safe compound in no danger of corresponding to an endocrine disruptor and is good in color developing performance. The non-phenol compound used in the present invention is at least one selected from the group consisting of compounds represented by the following formulas (I) to (III). 

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Ichihara, Japan

Kayoko Tada