EP0127203A1
Expired / Lapsed
EP
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New phthalide derivatives, process for preparing the same and recording system utilizing the same as colourless chromogenic material
Assignee: Kanzaki Paper Manufacturing Co Ltd
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Filing: 1982-04-08
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Granted: —
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Expires: 2002-04-08
Abstract
Abstract New phthalide derivatives useful as colourless chromogenic material have the general formula: wherein R, is hydrogen or one to four substituents selected from the group consisting of halogen, lower alkyl, lower alkoxy, nitro and amino group represented by the general formula R 2 is hydrogen or lower alkyl; each R 3 , R 4 , R 5 , R., R 7 and R 9 is hydrogen, lower alkyl, benzyl, halogen substituted benzyl, phenyl, or lower alkyl or loweralkoxy substituted phenyl, orboth ofR. and R 4 , R 5 and R. or R. and R. together with the adjacent nitrogen may form a cyclic polymethylene amino group represented by the general formula a, a is an integer of 4 to 6; R. is hydrogen or one to two substituents selected from the group consisting of halogen, lower alkyl, lower alkoxy, nitro and cyclic polymethylene amino group represented by the general formula a, a is an integer of 4 to 6; and each X and Y is hydrogen, lower alkyl or lower alkoxy.
Inventors
- 👤 Mitsuru Kondo
- 👤 Tomoyuki Okimoto
- 👤 Nobuo Kanda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 00:32
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/77; C07D307/87; C07D307/88; B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B41M5/136; B41M5/145; B41M5/26; B41M5/30; B41M5/323; B41M5/327
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
190 words
A phthalide derivative having the general formula: wherein R 1 is hydrogen or one to four substituents selected from the group consisting of halogen, lower alkyl, lower alkoxy, nitro and amino group represented by the general formula - ; R 2 is hydrogen or lower alkyl; each R 3 , R 4 , R 5 , R 6 , R 8 and R 9 is hydrogen, lower alkyl, benzyl, halogen substituted benzyl, phenyl, or lower alkyl or lower alkoxy substituted phenyl, or, both of R 3 and R 4 , R 5 and R 6 or R a and R 9 together with the adjacent nitrogen may form a cyclic polymethylene amino group represented by the general formula -N (CH 2 ) a , a is an integer of 4 to 6 ; R 7 is hydrogen or one to two substituents selected from the group consisting of halogen, lower alkyl, lower alkoxy, nitro and cyclic polymethylene amino group represented by the general formula -N (CH 2 ) a , a is an integer of 4 to 6; and each X and Y is hydrogen, lower alkyl or lower alkoxy.
Claim 2
Dependent Claim
190 words
A phthalide derivative having the general formula: wherein R 1 is hydrogen or one to four substituents selected from the group consisting of halogen, lower alkyl, lower alkoxy, nitro and amino group represented by the general formula - ; R 2 is hydrogen or lower alkyl; each R 3 , R 4 , R 5 , R 6 , R 8 and R 9 is hydrogen, lower alkyl, benzyl, halogen substituted benzyl, phenyl, or lower alkyl or lower alkoxy substituted phenyl, or, both of R 3 and R 4 , R 5 and R 6 or R a and R 9 together with the adjacent nitrogen may form a cyclic polymethylene amino group represented by the general formula -N (CH 2 ) a , a is an integer of 4 to 6 ; R 7 is hydrogen or one to two substituents selected from the group consisting of halogen, lower alkyl, lower alkoxy, nitro and cyclic polymethylene amino group represented by the general formula -N (CH 2 ) a , a is an integer of 4 to 6; and each X and Y is hydrogen, lower alkyl or lower alkoxy.
Claim 3
Dependent Claim
26 words
A phthalide derivative according to Claim 1, in which X, R 3 and R 4 are the same as R 5 and R 6 , respectively.
Claim 4
Dependent Claim
42 words
A phthalide derivative according to Claim 1, in which said phthalide derivative has the general formula: wherein R 2 , R 3 , R 4 , R 7 , R 8 , R 9 and X are the same as hereinabove defined.
Claim 5
Dependent Claim
38 words
A phthalide derivative according to Claim 1, in which said phthalide derivative has the general formula: wherein R 1 , R 2 , R 3 , R 4 , X and a are the same as hereinabove defined.
Claim 6
Dependent Claim
63 words
A process for preparing a phtbalide derivative is defined in Claim 1 which comprises reacting a benzophenone derivative having the general formula : with an ethylene derivative having the general formula : wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , X and Y are the same as hereinabove defined.
Claim 7
Dependent Claim
37 words
A recording system which utilizes the colour forming reaction between a colourless chromogenic material and an electron accepting acidic reactant material characterized in that said colourless chromogenic material comprises a phthalide derivatives as defined in Claim 1.
Claim 8
Dependent Claim
17 words
A recording system according to Claim 6, in which said recording system is a pressure-sensitive recording system.
Claim 9
Dependent Claim
17 words
A recording system according to Claim 6, in which said recording system is a heat-sensitive recording system.
References Cited (Backward Citations)
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