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EP0448055A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Recording liquid for ink jet recording

Assignee: Mitsubishi Chemical Corp
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Filing: 1991-03-19
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Granted: —
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Expires: 2011-03-19
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Abstract

Abstract A recording liquid for ink jet recording, which comprises an aqueous medium, a pigment and, as a dispersant, at least one member selected from the group consisting of compounds of the following formula (I) to (X): wherein R¹ is a C₈₋₂₀ alkyl group, m is an integer of from 1 to 3, and M is Na or NH₄, wherein R² is a C₈₋₂₀ alkyl group, n is an integer of from 1 to 3, and M is Na or NH₄, wherein each of R³ and R⁴ is a C₆₋₁₆ alkyl or alkenyl group, and M is Na or NH₄, wherein R⁵ is a C₁₀₋₂₀ alkyl or alkenyl group, and M is Na or NH₄, wherein R⁶ is a C₆₋₁₆ alkyl or alkenyl group, and M is Na or NH₄, wherein R⁷ is a C₁₀₋₂₀ alkyl or alkenyl group, and M is Na or NH₄, wherein R⁸ is a C₁₀₋₂₀ alkyl or alkenyl group, R⁹ is a C₁-₄ alkyl group and R¹⁰ is a C₁₋₃ alkylene group, and M is Na or NH₄, wherein R¹¹ is a C₆₋₁₈ alkyl group, p is an integer of from 1 to 15, and M is Na or NH₄, wherein R¹² is a methyl group or a hydrogen atom, q is an integer of 1 or 2, r is an integer of from 1 to 8, and M is Na or NH₄, and wherein t is an integer of from 1 to 10, R¹³ is a C₁₀₋₂₀ alkyl or alkenyl group, and M is Na or NH₄.

Inventors

  • 👤 Hiroshi Takimoto
  • 👤 Akira Kajikawa
  • 👤 Tomio Yoneyama

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-24 14:04
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/324; C09D11/326

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 252 words
A recording liquid for ink jet recording, which comprises an aqueous medium, a pigment and, as a dispersant, at least one member selected from the group consisting of compounds of the following formula (I) to (X): wherein R¹ is a C₈₋₂₀ alkyl group, m is an integer of from 1 to 3, and M is Na or NH₄, wherein R² is a C₈₋₂₀ alkyl group, n is an integer of from 1 to 3, and M is Na or NH₄, wherein each of R³ and R⁴ is a C₆₋₁₆ alkyl or alkenyl group, and M is Na or NH₄, wherein R⁵ is a C₁₀₋₂₀ alkyl or alkenyl group, and M is Na or NH₄, wherein R⁶ is a C₆₋₁₆ alkyl or alkenyl group, and M is Na or NH₄, wherein R⁷ is a C₁₀₋₂₀ alkyl or alkenyl group, and M is Na or NH₄, wherein R⁸ is a C₁₀₋₂₀ alkyl or alkenyl group, R⁹ is a C₁-₄ alkyl group and R¹⁰ is a C₁₋₃ alkylene group, and M is Na or NH₄, wherein R¹¹ is a C₆₋₁₈ alkyl group, p is an integer of from 1 to 15, and M is Na or NH₄, wherein R¹² is a methyl group or a hydrogen atom, q is an integer of 1 or 2, r is an integer of from 1 to 8, and M is Na or NH₄, and wherein t is an integer of from 1 to 10, R¹³ is a C₁₀₋₂₀ alkyl or alkenyl group, and M is Na or NH₄.
Claim 2
Dependent Claim 62 words
The recording liquid according to Claim 1, wherein the aqueous medium is a solvent mixture comprising water and an aqueous organic solvent selected from the group consisting of ethylene glycol, propylene glycol, butylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol (#200), polyethylene glycol (#400), glycerol, N-methyl-pyrrolidone, N-ethyl-pyrrolidone, N-vinyl-pyrrolidone, 1,3-dimethyl-imidazolidinone, ethylene glycol monoallyl ether, ethylene glycol monomethyl ether and diethylene glycol monomethyl ether.
Claim 3
Dependent Claim 38 words
The recording liquid according to Claim 1 or 2, wherein the pigment is an azo-pigment, and at least one member selected from the group consisting of compounds of the formulas (I) to (VI) is contained as the dispersant.
Claim 4
Dependent Claim 64 words
The recording liquid according to Claim 1, 2 or 3, wherein at least one member selected from the group consisting of compounds of the formulas (I) and (II), at least one member selected from the group consisting of compounds of the formula (III), or at least one member selected from the group consisting of compounds of the formula (IV), is employed as the dispersant.
Claim 5
Dependent Claim 39 words
The recording liquid according to Claim 1 or 2, wherein the pigment is a quinacridone pigment, and at least one member selected from the group consisting of compounds of the formulas (I) to (VI) is contained as the dispersant.
Claim 6
Dependent Claim 47 words
The recording liquid according to Claim 1, 2 or 5, wherein the dispersant is at least one member selected from the group consisting of compounds of the formulas (I) and (II), or at least one member selected from the group consisting of compounds of the formula (IV).
Claim 7
Dependent Claim 40 words
The recording liquid according to Claim 1 or 2, wherein the pigment is phthalocyanine pigment, and at least one member selected from the group consisting of compounds of the formulas (I) to (III) and (VII), is contained as the dispersant.
Claim 8
Dependent Claim 38 words
The recording liquid according to Claim 1 or 2, wherein the pigment is carbon black and at least one member selected from the group consisting of compounds of the formulas (I) to (VI) is contained as the dispersant.
Claim 9
Dependent Claim 31 words
The recording liquid according to Claim 1, 2 or 8, wherein the dispersant is at least one member selected from the group consisting of compounds of the formulas (I) and (II).
Claim 10
Dependent Claim 30 words
The recording liquid according to Claim 1, wherein at least one member selected from the group consisting of compounds of the formulas (I) and (II) is used as the dispersant.

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