Inkjet inks containing crosslinked polyurethanes

Inactive Publication Date: 2005-08-18
EI DU PONT DE NEMOURS & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0024] It was found that the washfastness and stain rating of an inkjet printed textile can be improved to a commercially acceptable level by using a crosslinked polyurethane dispersoid binder in aqueous inkjet inks. The i

Problems solved by technology

While dyes typically offer superior color properties compared to pigments, they tend to fade quickly and are more prone to rub off.
Even as inkjet hardware improvements are made to increase printing speeds, adoption of inkjet printing in the textile industry will be impeded if methods to also improve colorfastness are not found.
A disadvantage of inkjet printing, in particular inkjet printing with pigmented ink, is inkjet printed fabrics ar

Method used

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  • Inkjet inks containing crosslinked polyurethanes

Examples

Experimental program
Comparison scheme
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examples

[0164] Tests used to characterize the polyurethane dispersoids, the inks and the printed textiles were those commonly used in the art. Some specific procedures are listed

Printing and Testing Techniques

[0165] Inkjet printers used in the following examples were:

[0166] (1) a print system with a stationery print head mount with up to 8 print heads, and a media platen. The printheads were from Xaar (Cambridge, United Kingdom). The media platen held the applicable media and traveled underneath the print heads. The sample size was 7.6 cm by 19 cm. Unless otherwise noted this print system was used to print the test samples.

[0167] (2) Seiko IP-4010 printer configured to accept fabrics

[0168] (3) DuPont® Artistri® 2020 printer.

[0169] The fabrics used were obtained from Testfabrics, Inc, (Pittston Pa.) namely: (1) 100% cotton fabric style # 419W, which is a bleached, mercerized combed broadcloth (133×72); (2) Polyester / cotton fabric style # 7435M, which is a 65 / 35 poplin mercerized and b...

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Abstract

Inkjet inks are described that have, as a principal component, a crosslinked polyurethane dispersoid binder additive. These inks can be used for printing on different media, and are particularly suitable for printing on textiles.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application claims priority under 35 U.S.C. §119 from U.S. Provisional Application Ser. No. 60 / 537,880 (filed Jan. 21, 2004), the disclosure of which is incorporated by reference herein for all purposes as if fully set forth. [0002] This application is related to commonly owned U.S. application Ser. No. __ / ___,___, concurrently filed herewith, entitled “Inkjet Inks Containing Crosslinked Polyurethanes”, which also claims priority under 35 U.S.C. §119 from U.S. Provisional Application Ser. No. 60 / 537,880 (filed Jan. 21, 2004).BACKGROUND OF THE INVENTION [0003] This invention pertains to inkjet inks, more specifically to pigmented inkjet inks containing crosslinked polyurethane dispersoid binders, which are particularly suitable for textile printing. [0004] Inkjet recording is a printing method wherein droplets of ink are ejected through fine nozzles to form letters or figures on the surface of recording media. Inks used in such reco...

Claims

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Application Information

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IPC IPC(8): C03C17/00D06P5/30
CPCC09D11/30C09D11/326Y10T428/24802D06P5/30C09D11/40B41J2/01B41J2/21B41M5/0023B41M5/0047B41M5/0088C09D11/322
Inventor BERGE, CHARLES T.LI, XIAOQINGBAUER, RICHARD DOUGLAS
Owner EI DU PONT DE NEMOURS & CO
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