EP0318941A2
Expired / Lapsed
EP
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Developer for pressure-sensitive recording sheets, aqueous dispersion of the developer and method for preparing the developer
Assignee: Sanko Kaihatsu Kagaku Kenkyusho KK
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Filing: 1988-11-30
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Granted: —
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Expires: 2008-11-30
Abstract
Abstract A developer comprising at least one polyvalent metal salt of a nuclear substituted salicylic acid of the following general formula is provided. In the formula, R₁ represents an alkyl group having from 1 to 12 carbon atoms, R₂ represents a hydrogen atom or an alkyl group having from 1 to 12 carbon atoms, R₃ represents a hydrogen atom or a methyl group provided that at least one of R₁ and R₂ is a secondary butyl group, a secondary hexyl group, an isohexyl group, a secondary octyl group, an isononyl group, a secondary decyl group, a secondary dodecyl group or an isododecyl group and the total number of the carbon atoms in R₁, R₂ and R₃ is from 9 to 18, M is a polyvalent metal atom, and m is a valence of M. An aqueous dispersion containing the developer and a method for preparing the developer are also described.
Inventors
- 👤 Toranosuke Sanko Kaihatsu Saito
- 👤 Takashi Sanko Kaihatsu Ishibashi
- 👤 Tomoharu 4-1-1025 Muko Yutaka-Machi Shiozaki
- 👤 Tetsuo Shiraishi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 14:27
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B41M5/155
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
134 words
A developer for pressure-sensitive recording sheets which comprises at least one polyvalent metal salt of a nuclear substituted salicylic acid of the following general formula [I] wherein R₁ represents an alkyl group having from 1 to 12 carbon atoms, R₂ represents a hydrogen atom or an alkyl group having from 1 to 12 carbon atoms, R₃ represents a hydrogen atom or a methyl group provided that at least one of R₁ and R₂ is a secondary butyl group, a secondary hexyl group, an isohexyl group, a secondary octyl group, an isononyl group, a secondary decyl group, a secondary dodecyl group or an isododecyl group and the total number of the carbon atoms in R₁, R₂ and R₃ is from 9 to 18, M is polyvalent metal atom, and m is a valence of M.
Claim 2
Dependent Claim
134 words
A developer for pressure-sensitive recording sheets which comprises at least one polyvalent metal salt of a nuclear substituted salicylic acid of the following general formula [I] wherein R₁ represents an alkyl group having from 1 to 12 carbon atoms, R₂ represents a hydrogen atom or an alkyl group having from 1 to 12 carbon atoms, R₃ represents a hydrogen atom or a methyl group provided that at least one of R₁ and R₂ is a secondary butyl group, a secondary hexyl group, an isohexyl group, a secondary octyl group, an isononyl group, a secondary decyl group, a secondary dodecyl group or an isododecyl group and the total number of the carbon atoms in R₁, R₂ and R₃ is from 9 to 18, M is polyvalent metal atom, and m is a valence of M.
Claim 3
Dependent Claim
40 words
An aqueous dispersion of a developer for pressure-sensitive recording sheets which comprises at least one polyvalent metal salt of a nuclear substituted salicylic acid of the following general formula [I] R₁, R₂, R3, M and m are as defined above.
Claim 4
Dependent Claim
40 words
An aqueous dispersion of a developer for pressure-sensitive recording sheets which comprises at least one polyvalent metal salt of a nuclear substituted salicylic acid of the following general formula [I] R₁, R₂, R3, M and m are as defined above.
Claim 5
Dependent Claim
105 words
A developer according to Claim 1, wherein said nuclear substituted salicylic acid is a member selected from the group consisting of 3-methyl-5-isononylsalicylic acid, 3-methyl-5-isododecylsalicylic acid, 3-isopropyl-5-isononylsalicylic acid, 3-secondary butyl-5-isohexylsalicylic acid, 3-secondary butyl-5-isononylsalicylic acid, 3-tertiary butyl-5-isohexylsalicylic acid, 3-tertiary butyl-5-isononylsalicylic acid, 3-tertiary amyl-5-isohexylsalicylic acid, 3-tertiary amyl-5-isononylsalicylic acid, 3-secondary hexyl-5-secondary butylsalicylic acid, 3-secondary hexyl-5-tertiary butylsalicylic acid, 3,5-disecondary hexylsalicylic acid, 3-secondary hexyl-5-isohexylsalicylic acid, 3-isohexyl-5-tertiary butylsalicylic acid, 3-isohexyl-5-secondary hexylsalicylic acid, 3,5-diisohexylsalicylic acid, 3-secondary octyl-5-methylsalicylic acid, 3-secondary octyl-6-methylsalicylic acid, 3-isononylsalicylic acid, 3-isononyl-5-methylsalicylic acid, 3-isononyl-5-ethylsalicylic acid, 3-isononyl-5-tertiary butylsalicylic acid, 3,5-diisononylsalicylic acid, 3-secondary decylsalicylic acid, 3-secondary decyl-5-methylsalicylic acid, 3-secondary decyl-6-methylsalicylic acid, 3-secondary dodecylsalicylic acid, 3-isododecylsalicylic acid, 3-isododecyl-5-methylsalicylic acid, 3-isododecyl-5-ethylsalicylic acid, and 3-isododecyl-5-isopropylsalicylic acid.
Claim 6
Dependent Claim
53 words
A developer according to Claim 1, wherein the polyvalent metal salt of the nuclear substituted salicylic acid is zinc salt of a nuclear substituted salicylic acid selected from the group consisting of 3-isopropyl-5-isononylsalicylic acid, 3-tertiary butyl-5-isononylsalicylic acid, 3-isononyl-5-methylsalicylic acid, 3-isononyl-5-tertiary butylsalicylic acid, 3-secondary decylsalicylic acid, 3-secondary dodecylsalicylic acid, 3-isododecylsalicylic acid, and 3-isododecyl-5-methylsalicylic acid.
Claim 7
Independent Claim
235 words
A method for preparing a developer for pressure-sensitive recording sheets which comprises at least one polyvalent metal salt of a nuclear substituted salicylic acid, the method comprising subjecting to double decomposition an aqueous solution of an alkali metal salt of a nuclear substituted salicylic acid of the following general formula [II] wherein R₁ represents an alkyl group having from 1 to 12 carbon atoms, R₂ represents a hydrogen atom or an alkyl group having from 1 to 12 carbon atoms, R₃ represents a hydrogen atom or a methyl group provided that at least one of R₁ and R₂ is a secondary butyl group, a secondary hexyl group, an isohexyl group, a secondary octyl group, an isononyl group, a secondary decyl group, a secondary dodecyl group or an isododecyl group and the total number of the carbon atoms in R₁, R₂ and R₃ is from 9 to 18, and N represents an alkali metal atom, and an aqueous solution of a water-soluble polyvalent metal salt in the presence of an organic solvent whose solubility in water is not larger than 10 wt% and which has a boiling point of from 60°C to 180°C, thereby obtaining a polyvalent metal salt of a nuclear substituted salicylic acid of the general formula [I] wherein R₁, R₂ and R₃ have, respectively, the same meanings as defined above, M is a polyvalent metal atom, and m is a valence of M.
Claim 8
Independent Claim
235 words
A method for preparing a developer for pressure-sensitive recording sheets which comprises at least one polyvalent metal salt of a nuclear substituted salicylic acid, the method comprising subjecting to double decomposition an aqueous solution of an alkali metal salt of a nuclear substituted salicylic acid of the following general formula [II] wherein R₁ represents an alkyl group having from 1 to 12 carbon atoms, R₂ represents a hydrogen atom or an alkyl group having from 1 to 12 carbon atoms, R₃ represents a hydrogen atom or a methyl group provided that at least one of R₁ and R₂ is a secondary butyl group, a secondary hexyl group, an isohexyl group, a secondary octyl group, an isononyl group, a secondary decyl group, a secondary dodecyl group or an isododecyl group and the total number of the carbon atoms in R₁, R₂ and R₃ is from 9 to 18, and N represents an alkali metal atom, and an aqueous solution of a water-soluble polyvalent metal salt in the presence of an organic solvent whose solubility in water is not larger than 10 wt% and which has a boiling point of from 60°C to 180°C, thereby obtaining a polyvalent metal salt of a nuclear substituted salicylic acid of the general formula [I] wherein R₁, R₂ and R₃ have, respectively, the same meanings as defined above, M is a polyvalent metal atom, and m is a valence of M.
References Cited (Backward Citations)
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