Printing ink composition of solvent recovery/reuse type, diluent solvent, and method of reusing recovered solvent

A technology for printing inks and diluting solvents, applied in the field of solvents and ink compositions, can solve the problems of huge initial cost, operating cost, consumption of petroleum resources, and cost reduction must not have an impact on the environment, and achieve excellent printing suitability, easy reproducibility, etc. The effect of using

Inactive Publication Date: 2009-06-24
TOYO INK SC HOLD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Large-scale distillation towers must have huge initial and operating costs
In addition, since distillation requires a large amount of energy, it consumes a large amount of petroleum resources and emits a large amount of carbon dioxide.
Therefore, it becomes a problem in that the cost reduction resulting from reuse must not have an impact on the environment

Method used

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  • Printing ink composition of solvent recovery/reuse type, diluent solvent, and method of reusing recovered solvent
  • Printing ink composition of solvent recovery/reuse type, diluent solvent, and method of reusing recovered solvent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0109] Solvent recovery and reuse type printing inks using a variety of different resins with a non-volatile solvent composition of isopropyl alcohol / methyl ethyl ketone / methylcyclohexane / n-propyl acetate / propylene glycol monomethyl ether, used in various printing machines Gravure printing is carried out, and after recovery by a recovery device using activated carbon particles as a fluidized bed, water is removed with a zeolite separation membrane, and the result is isopropanol: methyl ethyl ketone: methylcyclohexane: n-propyl acetate: propylene glycol monomethyl ether = Recovery solvent (A) of 25.0:15.0:5.0:50.0:5.0.

[0110] 100 g of this recovered solvent (A) was put into an Erlenmeyer flask, a distillation apparatus having a distillation column filled with Raschig rings was installed, and the temperature was raised while stirring with a heating stirrer.

[0111] Taking the reflux ratio as reflux (erlenmeyer flask): extraction (recovery solvent)=3:1, the result of distillat...

Embodiment 2

[0114]With respect to the recovered solvent (A) 100 in Example 1, methyl ethyl ketone (X) was added at a weight ratio of 40 to prepare a mixed solvent (B).

[0115] 100 g of this recovered solvent (B) was put into an Erlenmeyer flask, a distillation apparatus having a distillation column filled with Raschig rings was installed, and the temperature was raised while stirring with a heating stirrer.

[0116] Taking the reflux ratio as reflux (erlenmeyer flask): extraction (recovery solvent)=3:1, the result of distillation is that, by distillation, isopropanol: methyl ethyl ketone: methylcyclohexane=31.3 is obtained at a temperature of 74° C. at the top of the tower: Mixed solvent (a) 16.0g of 37.0:31.7 (weight ratio), then, obtain isopropanol: the mixed solvent (b) 58.0g of methyl ethyl ketone=34.3:65.7 (weight ratio) at tower top temperature 75.5 ℃, and then, in A single solvent of methyl ethyl ketone (f) was obtained at a tower top temperature of 78°C, and 48.2 g of a single n-...

Embodiment 3

[0119] Using solvent recovery and reuse type printing inks of various resin systems with a solvent composition of isopropyl alcohol / methyl ethyl ketone / methylcyclohexane / n-propyl acetate / propylene glycol monomethyl ether, gravure printing is performed with various printing machines, After being recovered together by a recovery device using activated carbon particles as a fluidized bed, water was removed with a zeolite separation membrane, and the result was isopropanol: methyl ethyl ketone: methylcyclohexane: n-propyl acetate: propylene glycol monomethyl ether = 25.0:15.0 :5.0:50.0:5.0 (weight ratio) of recovery solvent (A).

[0120] 100 g of this recovered solvent (A) was put into an Erlenmeyer flask, a distillation apparatus having a distillation column filled with Raschig rings was installed, and the temperature was raised while stirring with a heating stirrer.

[0121] Taking the reflux ratio as reflux (erlenmeyer flask): extraction (recovery solvent)=3:1, the result of di...

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Abstract

A method of solvent recovery / reuse in printing or coating with a printing ink composition containing solvents which comprises: a step in which solvents which have volatilized are recovered with a solvent recovery apparatus; a step in which the solvents obtained are separated by multistage distillation into single solvents and / or two or more azeotropic compositions; and a step in which the solvents recovered are reused as a raw printing ink material and / or a raw material for a diluent solvent.

Description

technical field [0001] The present invention relates to reusable solvents and ink compositions containing the same. Furthermore, the present invention also relates to a method for recovering and reusing the volatile solvent generated during printing. Furthermore, the present invention also relates to a solvent and an ink composition obtained by utilizing the recovered solvent. Background technique [0002] In recent years, problems related to air pollution such as the destruction of the ozone layer in the stratosphere, the impact of acid rain on crops and the destruction of forest resources in the low-level circle, and the adverse effects of photochemical oxidants on the human body have become increasingly serious. Laws to prevent air pollution have also become stricter every year. Especially in the gravure printing industry, which uses and discharges a large amount of organic solvents, interest in solvent recovery and reuse as one of means for solving these problems is in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/02B01D3/00
CPCB41J2/175C09D11/033Y10T428/31551
Inventor 小藤通久高野真主实安田秀树中神好章渡部慎一郎川岛大幸石塚嘉光入江俊行
Owner TOYO INK SC HOLD CO LTD
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