Patent EP0219302A2 successfully refreshed from Google Patents.
EP0219302A2
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Recording materials
Assignee: Fujifilm Holdings Corp
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Filing: 1986-10-07
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Granted: —
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Expires: 2006-10-07
Abstract
Abstract A recording material contains an electron donating leuco dye and, as an electron accepting compound, a salicylic acid derivative having an alkyl group, an alkoxy group or an aryloxy group as a substituent or a metal salt thereof. The recording material has good color developability, working preservability and stability.
Inventors
- 👤 Kensuka C/O Fuji Photo Film Co. Ltd Ikeda
- 👤 Ken C/O Fuji Photo Film Co. Ltd Iwakura
- 👤 Masato C/O Fuji Photo Film Co. Ltd Satomura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 15:17
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B41M5/155; B41M5/26; B41M5/30; B41M5/333; B41M5/3333; B41M5/3335
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
53 words
A recording material, for example a pressure- or heat-sensitive recording material, containing an electron donating leuco dye and an electron accepting compound, characterised in that said electron accepting compound is a salicylic acid derivative having an alkyl group, an alkoxy group or an aryloxy group as a substituent or a metal salt thereof.
Claim 2
Dependent Claim
53 words
A recording material, for example a pressure- or heat-sensitive recording material, containing an electron donating leuco dye and an electron accepting compound, characterised in that said electron accepting compound is a salicylic acid derivative having an alkyl group, an alkoxy group or an aryloxy group as a substituent or a metal salt thereof.
Claim 3
Dependent Claim
131 words
A material as claimed in Claim 1, wherein said salicylic acid derivative or metal salt thereof is represented by the formula (I): wherein R 1 represents a substituted or unsubstituted alkyl group having from 7 to 18 carbon atoms to be bonded to the para-position with respect to the COOM group, a substituted or unsubstituted alkoxy group having from 7 to 18 carbon atoms,or a substituted or unsubstituted aryloxy group having from 6 to 18 carbon atoms; X represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group or a halogen atom; and M represents a hydrogen atom or M 1 1/n , wherein M 1 represents an n-valent metal atom, and n represents an integer corresponding to the valence number of the metal atom.
Claim 4
Dependent Claim
28 words
A material as claimed in Claim 1 or 2, wherein said salicylic acid derivative or metal salt thereof has a total carbon atom number of 15 or more.
Claim 5
Dependent Claim
48 words
A material as claimed in Claim 1, wherein said salicylic acid derivative or metal salt thereof is represented by the formula (II): wherein R 2 represents a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group; and X, M and n are as previously defined.
Claim 6
Dependent Claim
38 words
A material as claimed in Claim 4, wherein R 2 represents a substituted or unsubstituted alkyl group having from 1 to 30 carbon atoms or a substituted or unsubstituted aryl group having from 6 to 24 carbon atoms.
Claim 7
Dependent Claim
21 words
A material as claimed in Claim 4 or 5, wherein -OR 2 is bonded to the para-position with respect to COOM.
Claim 8
Dependent Claim
57 words
A material as claimed in Claim 1, wherein said salicylic acid derivative or metal salt thereof is represented by the formula (III): wherein Ar represents a substituted or unsubstituted aryl group; X, M and n are as previously defined; m represents an integer of from 1 to 10; and p represents an integer of 1 to 3.
Claim 9
Dependent Claim
11 words
A material as claimed in Claim 7, wherein m represents 2.
Claim 10
Dependent Claim
26 words
A recording material as claimed in Claim 7 or 8,wherein M 1 represents a zinc atom, an aluminium atom, a magnesium atom or a calcium atom.
Claim 11
Dependent Claim
29 words
A recording material as claimed in Claim 7, 8 or 9, wherein O-(C m H 2m -O)- p Ar is bonded at the para- position with respect to COOM.
Claim 12
Dependent Claim
47 words
A material as claimed in any preceding claim, wherein said salicylic acid derivative having an alkoxy group as a substituent or metal salt thereof is a compound produced by reacting a corresponding hydroxysalicylic acid derivative with an alkyl halide or an alkyl sulfonate in a polar solvent.
Claim 13
Dependent Claim
18 words
A material as claimed in Claim 11, wherein said hydroxysalicylic acid derivative is a phenolated hydroxysalicylic acid derivative.
Claim 14
Dependent Claim
25 words
A material as claimed in Claim 11 or 12, wherein said alkyl halide or alkyl sulfonate is an alkyl chloride, an alkyl bromide or an-alkyl-p-toluene-sulfonate.
Claim 15
Dependent Claim
22 words
A recording material as claimed in Claim 11, 12 or 13, wherein said polar solvent is a solvent having a hydrophilic group.
Claim 16
Dependent Claim
29 words
A material as claimed in any one of Claim 11 to 15, wherein said hydrophilic group is a group selected from hydroxy, ether, carbonyl, sulfonyl, cyano and amido groups.
References Cited (Backward Citations)
No citation records indexed.
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