N,N′-diarylurea derivative, manufacturing method thereof, and thermosensitive recording material using same
AssigneeSanko Co., Ltd.
InventorsRyoichi Kinishi, Yoshimi Ishibashi
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Abstract
The present invention relates to an N,N′-diurea derivative represented by the following general formula (1) and a method for producing the same. In addition, the present invention relates to a thermosensitive recording material in which a thermosensitive recording layer including a basic dye which is colorless or lightly colored at room temperature and a developer capable of developing color upon contact with the basic dye by heating is provided on a base sheet, wherein the developer is the N,N′-diurea derivative represented by the following general formula (1): (wherein R2 is an alkyl group, an aralkyl group, or an aryl group; and A1 is a hydrogen atom or an alkyl group).
Claims11
An N,N′-diarylurea derivative of Formula (1):
- wherein each R2 is independently:
- an unsubstituted linear, branched or alicyclic alkyl group having 1 to 12 carbon atoms,
- an aralkyl group having 7 to 12 carbon atoms, or
- an aryl group having 6 to 12 carbon atoms,
- wherein the aralkyl group and the aryl group are independently optionally substituted with an alkyl group having 1 to 12 carbon atoms, an alkoxy group having 1 to 12 carbon atoms, an aryl group having 6 to 12 carbon atoms, or a halogen atom;
- and
- wherein each A1 is a hydrogen atom.
Dependencies are inferred from the claim text.