Record receiver having plural interactive leaves or a colorless – Having a colorless color-former – developer therefor – or... – Identified color-former
Patent
1993-06-14
1994-04-12
Ryan, Patrick J.
Record receiver having plural interactive leaves or a colorless
Having a colorless color-former, developer therefor, or...
Identified color-former
427151, 503213, B41M 5145, B41M 530
Patent
active
053025717
ABSTRACT:
Disclosed are a crystal and crystalline solvate of a fluoran compound represented by the formula ##STR1## wherein R.sub.1 is ##STR2## and which are useful as chromogenic compounds in recording materials such as pressure-sensitive and heat-sensitive recording materials, a process for preparation of said crystal and said crystalline solvate, and recording materials comprising said crystal or said crystalline solvate.
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Patent Abstracts of Japan, vol. 9, No. 175, Jul. 19, 1985 (JP-A-60 47 068 Mar. 14, 1985).
Patent Abstracts of Japan, vol. 12, No. 1, Jan. 6, 1988 (JP-A-62-167086 Jul. 23, 1987).
Hasegawa Kiyoharu
Kikkawa Kazuyoshi
Nakatsuka Masakatsu
Otsuji Atsuo
Yamaguchi Akihiro
Mitsui Toatsu Chemicals Inc.
Ryan Patrick J.
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