发明授权
- 专利标题: Salicylic acid derivatives
- 专利标题(中): 水杨酸衍生物
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申请号: US338225申请日: 1994-11-09
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公开(公告)号: US5476957A公开(公告)日: 1995-12-19
- 发明人: Yoshimitsu Tanabe , Yuki Kobayashi , Atsuo Otsuji , Masakatsu Nakatsuka , Akihiro Yamaguchi
- 申请人: Yoshimitsu Tanabe , Yuki Kobayashi , Atsuo Otsuji , Masakatsu Nakatsuka , Akihiro Yamaguchi
- 申请人地址: JPX Tokyo
- 专利权人: Mitsui Toatsu Chemicals, Inc.
- 当前专利权人: Mitsui Toatsu Chemicals, Inc.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX3-243201 19910924; JPX4-168744 19920626
- 主分类号: B41M5/30
- IPC分类号: B41M5/30 ; B41M5/333 ; C07C271/28 ; C07C271/58 ; C07C333/08 ; C07C333/24 ; C07F3/02 ; C07F3/04 ; C07F3/06 ; C07F15/00
摘要:
The heat-sensitive recording material disclosed comprises a colorless or pale colored dyestuff precursor, one or more salicylic acid derivative of the formula (1) or metal salt of the derivative and an aliphatic amide compound having 18.about.60 carbon atoms in molecular structure, and is excellent in thermal response and preservation stability of white portions and images. ##STR1## wherein X.sub.1 and X.sub.2 are a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, an aralkyl group or an aryl group, Y.sub.1 and Y.sub.2 are an oxygen atom or a sulfur atom, R.sub.1 is a hydrogen atom, an alkyl group, an aralkyl group or an aryl group, and R.sub.2 is an alkyl group, an alkenyl group, an aralkyl group or an aryl group.
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