Supercharge Your Innovation With Domain-Expert AI Agents!

Novel quinonimine sulfur dye compositions, methods for producing them and their use for dyeing cellulose-containing material

A technology for sulfur dyes and compositions, applied in the directions of sulfur dyes, chemical instruments and methods, dyeing methods, etc., and can solve problems such as inapplicability

Inactive Publication Date: 2007-02-21
DYSTAR COLOURS DISTRIBUTION GMBH
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this approach is not applicable in the case of commercially available pre-reduced sulfur dyes, which are usually mixed with other stable reducing agents in the dye solution due to the vigorous evolution of hydrogen during reduction

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Novel quinonimine sulfur dye compositions, methods for producing them and their use for dyeing cellulose-containing material
  • Novel quinonimine sulfur dye compositions, methods for producing them and their use for dyeing cellulose-containing material
  • Novel quinonimine sulfur dye compositions, methods for producing them and their use for dyeing cellulose-containing material

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0052] Preparation Example 1 (Sample 1)

[0053] A flow-through cell separated by a cation exchange membrane (Nafion 424) was used to electrolyze the aqueous suspension of C.I. SulfurBlack 1 presscake. Start with a small amount of dye and gradually increase it during electrolysis. The reaction was started with 156.9 g of C.I. Sulfur Black 1 considered dry in 2 L of water consisting of 8 mL of 50% aqueous sodium hydroxide solution and 4 ml of Primasol NF wetting agent and continued to increase to a total volume of 5.815 L considered dry C.I.Sulfur Black 1 of up to 2271g. The anolyte used was aqueous sodium hydroxide (1 mol / l). Use 100mA / cm 2 The current density and the flow rate of 0.2m / s were electrolyzed for 3510 minutes, and the concentration of reducing equivalents that could be determined after electrolysis was 4.2, which was equivalent to a charge of 378Ah per kilogram of dye. The solution thus prepared can be used for dyeing purposes without additional addition of re...

preparation Embodiment 2

[0055] Preparation Example 2 (Sample 2)

[0056] As described in DE 1906083, at 20 mA / cm using a flow-through cell separated by a cation exchange membrane (Nafion 424) 2 The current density for electrolysis of C.I.Sulfur Black 1 suspension.

[0057] The HPLC spectrum of the reaction product is shown in figure 2 middle.

preparation Embodiment 3

[0058] Preparation Example 3 (Sample 3)

[0059] As described in DE 101222210, at 0.48 mA / cm using a flow-through cell separated by a cation exchange membrane (Nafion 424) 2 The current density for electrolysis of C.I.Sulfur Black 1 suspension.

[0060] The HPLC spectrum of the reaction product is shown in image 3 middle.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention provides novel colorless sulfur dye compositions which are obtainable at current densities of 50mA / cm2 to 150mA / cm2 and flow rates of 0.1 to 2m / s, preferably 0.1m / s to 0.4m / s; Process for the preparation of the composition and its use for dyeing cellulosic materials.

Description

technical field [0001] The present invention relates to novel leuco sulfur dye compositions of the class of quinoneimine sulfur dyes, and also to a process for the preparation of such leuco sulfur dye compositions by electrochemical reduction through controlled electrochemical processing conditions employed Changes are made. Background technique [0002] Quinoneimine sulfur dyes include dyes formed by the reaction of, for example, polynitrated phenols, halobenzenes, indoxyls or indoanilines with sulfur, alkali metal sulfides or alkali metal polysulfides in aqueous or alcoholic media. Such dyes specifically include violet, blue, green, reddish-brown, and black sulfur dyes. The resulting oligomeric or polymeric products contain organic structural repeat units (eg, phenothiazinone, thiazone, thiazone, and phenoxazinone substructures) linked together by disulfide bonds. References Angewandte Chemie 60 (1948), 141-147 describe these structures. [0003] For dyeing with these s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09B67/28D06P1/30C09B49/00C09B67/30
CPCC09B67/0078C09B49/00D06P1/30D06P3/6025C09B67/00C09B67/0077
Inventor 托马斯·贝希托尔德海科·布鲁纳约阿基姆·格鲁策理查德·里希特沃尔夫冈·施勒卡
Owner DYSTAR COLOURS DISTRIBUTION GMBH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com