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Polymeric emulsions for ink jet inks

A technology of inkjet ink and polymer, applied in the field of inkjet ink, can solve the problem of increasing the maintenance of printing head, limiting the speed and accuracy of printing operation, affecting the rheology of inkjet ink, etc.

Inactive Publication Date: 2006-04-19
ROHM & HAAS CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the presence of these binders can sometimes increase printhead maintenance issues, including clogged nozzles and kogation, the formation of a film on or around the heater
Also, polymers can affect the rheology of inkjet inks and can form a film on the nozzle plate, limiting the speed and accuracy of printing operations
Addition of polymers to inkjet ink compositions may also destabilize pigment emulsions and prevent bubble formation when thermal printheads are used

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0036] Procedure for Determination of Slurry Fraction of Acid Monomer Derived Material

[0037] 1. Sample Preparation

[0038] 17.5 g of latex was diluted to 35 g with deionized water and centrifuged at 18,500 rpm for 2 hours at 4°C in a DuPontSorvall Super T-21 centrifuge equipped with an SL-50T rotor. After centrifugation, the clear supernatant was carefully decanted. Dilute 17.5 g of the supernatant to 30 g with deionized water.

[0039] 2. Titrate 30 grams of sample with 0.50N HCl:

[0040] The pH of the diluted supernatant was adjusted to pH=12 with 0.5N KOH, and was titrated using a RadiometerTTT 80 titrator (available from Radiometer America), a RHM 84 Research pH meter (available from Radiometer America), and an autoburette ABU80 titration system (available from Radiometer America), the supernatant was titrated with 0.50N HCl. Acid titer=volume (the number of milliliters between the two peaks of the first derivative of the titration curve)×(0.5N)×((35-(17.5×solid c...

Embodiment 1

[0046] Example 1: Preparation of Dialyzed Latex

[0047] 28 grams of the emulsion described in Emulsion 1 were processed in two separate dialysis tubing in one gallon reservoir according to the dialysis procedure described below.

Embodiment 2

[0048] Example 2: Preparation of ultrafiltered latex

[0049] Two liters of the emulsion described in Emulsion 1 were processed according to the ultrafiltration method described below.

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PUM

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Abstract

This invention concerns polymeric emulsion binders which are suitable for use in ink jet inks. More specifically, this invention relates to ink jet inks comprised of polymeric binder emulsions comprising low levels of water soluble material, and ink jet inks comprising a polymeric binder emulsion with a low level of water soluble materials.

Description

technical field [0001] The present invention relates to polymeric emulsion binders suitable for use in ink jet inks. The present invention more particularly relates to inkjet inks consisting of polymeric binder emulsions comprising low levels of water-soluble materials, and to inkjet inks comprising polymeric binder emulsions comprising low levels of water-soluble materials polymer binder emulsion. Background technique [0002] Some inkjet inks contain a liquid medium, a colorant such as a pigment or dye, and a binder or resin that helps the pigment disperse in the medium and fixes the colorant on the surface of the print. In order to obtain more durable printing quality, especially the color fastness, water resistance and abrasion resistance of printing inks, attention has been paid to the preparation of inkjet inks containing polymeric binders to improve the water resistance and abrasion resistance of printed images. Paper or other print media usually absorb dye-based co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/10B41J2/01
CPCC09D11/30C09D11/40
Inventor E·A·约翰逊钟昭仁
Owner ROHM & HAAS CO