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Flexographic ink containing polymer or copolymer of 3,4-dialkoxythiophene

A dialkoxythiophene, offset printing ink technology, applied in the direction of ink, organic material conductor, printing, etc., can solve the problems of ink can not be combined, opaque printed matter, etc.

Inactive Publication Date: 2004-08-04
AGFA GEVAERT AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such inks cannot be incorporated into color work as they make the print opaque

Method used

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  • Flexographic ink containing polymer or copolymer of 3,4-dialkoxythiophene
  • Flexographic ink containing polymer or copolymer of 3,4-dialkoxythiophene
  • Flexographic ink containing polymer or copolymer of 3,4-dialkoxythiophene

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Experimental program
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Embodiment approach

[0051] According to a first embodiment of the offset printing ink according to the invention, the offset printing ink contains at least 0.2% by weight of a polymer or copolymer of 3,4-dialkoxythiophene, where the two alkoxy groups can be the same or different, or together denotes an optionally substituted oxy-alkylene-oxy-bridge.

[0052] According to a second embodiment of the offset printing ink according to the invention, the offset printing ink contains at least 0.3% by weight of a polymer or copolymer of 3,4-dialkoxythiophene, wherein the two alkoxy groups can be the same or different, or together denotes an optionally substituted oxy-alkylene-oxy-bridge.

[0053] According to a third embodiment of the offset printing ink according to the invention, which is reproducible after stirring to a constant viscosity, ie until successive measurements according to DIN 53211, the viscosity at 25° C. measured according to DIN 53211 is at least 100 mPa·s.

[0054] According to a fou...

no. 7 approach

[0058] According to a seventh embodiment of the flexographic ink of the invention, the polymer or copolymer of 3,4-dialkoxythiophene has the following formula:

[0059]

[0060] Among them, R 1 and R 2 Each independently represents hydrogen or C 1-5 Alkyl or together represent optionally substituted C 1-5 Alkylene or cycloalkylene.

[0061] According to an eighth embodiment of the flexographic ink of the present invention, the polymer or copolymer of 3,4-dialkoxythiophene is one in which two alkoxy groups together represent an optionally substituted oxy-alkylene-oxy Bridged polymers or copolymers of 3,4-dialkoxythiophenes.

[0062] A ninth embodiment of the offset printing ink according to the invention, wherein the two alkoxy groups together represent an optionally substituted oxy-alkylene-oxy bridge polymer or copolymer of 3,4-dialkoxythiophene Compounds selected from: poly(3,4-methylenedioxythiophene), poly(3,4-methylenedioxythiophene) derivatives, poly(3,4-ethylene...

no. 1 approach

[0225] According to a first embodiment of the method according to the invention, the method further comprises the step of adding at least one organic compound containing di- or poly-hydroxy and / or carboxyl or amide or lactam groups, for example sugar alcohols such as sorbose alcohol, mannitol, sucrose and fructose, diethylene glycol, 1,2-propanediol, propylene glycol, N-methylpyrrolidone, and the conductive coating obtained therefrom is tempered to increase its resistance to preferably <300 ohms / square, as disclosed in EP-A 686 662, incorporated herein by reference.

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Abstract

A non-dye containing flexographic ink containing a polymer or copolymer of a 3,4-dialkoxythiophene in which the two alkoxy groups may be the same or different or together represent an optionally substituted oxy-alkylene-oxy bridge, a polyanion and a latex binder in a solvent or aqueous medium, characterized in that the polymer or copolymer of a 3,4-dialkoxythiophene is present in a concentration of at least 0.1% by weight in the ink and that the ink is capable of producing a colorimetrically additive transparent print; a method of preparing the flexographic ink; and a flexographic printing process therewith.

Description

technical field [0001] The present invention relates to offset printing inks containing polymers or copolymers of 3,4-dialkoxythiophene. Background technique [0002] Offset ink systems are used for printing on a wide variety of substrates, including porous such as paper and paperboard, and non-porous such as polymeric films and foils, and are based on two-roll or three-roll systems using enclosed doctor blades. A three-roll system uses a rubber form roller that picks up the ink and delivers it to an anilox roller (an engraved metal or ceramic roller). Ink fills the engraved cells and is then transferred to a plate (rubber or plastic) where the image is raised in relief from the non-imaging areas of the background. The final transfer from the plate to the substrate then takes place. Offset printing runs at a speed of 0.25-10.2m / s. [0003] Offset inks can be water-based or solvent-based and are suitable for overprinting color on color, water-based inks typically have a pH...

Claims

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Application Information

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IPC IPC(8): B41M1/04C08G61/12C08K5/00C08L25/18C08L65/00C09D5/00C09D5/24C09D11/03C09D11/10C09D165/00C09K11/06H01B1/12H01L51/30H01L51/52
CPCC08G61/126C09D11/10C09D11/52H01L51/0037H01L51/0022C09D11/106H01B1/128H01L51/5206H01L51/5221C09D11/30C09K11/06C09D165/00H10K71/611H10K85/1135C09D11/03B41M1/04
Inventor L·莱恩德斯E·戴姆斯F·罗维特R·萨米恩J·-P·塔翁R·范登博盖尔特
Owner AGFA GEVAERT AG
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