Dyes for polymer coloration, their preparation and their use

A dye, C1-C6 technology, used in dyeing, textiles and papermaking, peri-ketone, etc., can solve problems such as poor light fastness, low thermal stability, etc.

Inactive Publication Date: 2012-04-18
DYSTAR COLOURS DISTRIBUTION GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, many of these known dyes have poor light fastness or low thermal stability in polyolefins

Method used

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  • Dyes for polymer coloration, their preparation and their use
  • Dyes for polymer coloration, their preparation and their use
  • Dyes for polymer coloration, their preparation and their use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0216] a) A mixture of 31.4 parts of the compound of formula (IXa) and 93 parts of chlorosulfonic acid was stirred at 60°C for 2 hours. The reaction mixture was cooled, then mixed with 31 parts of thionyl chloride, stirred overnight, and then poured into ice water. The separated precipitate was washed with water to neutrality and dried to obtain 47.5 parts of a dye mixture of formula (VIIa),

[0217]

[0218] Where t is 1 or 2.

[0219] b) A mixture consisting of 80 parts of dioxane aqueous solution, 13.1 parts of hexadecylamine (from Merck KGaA), 4.15 parts of sodium carbonate and 10.74 parts of the compound of formula (VIIa) was stirred at 50°C for 5 hours. After the reaction, the reaction mixture was mixed with methanol. The separated precipitate is purified and dried to obtain 15 parts of a dye mixture of formula (Ig),

[0220]

[0221] Where t is 1 or 2.

[0222] c) 1 g of the dye prepared in step b) is pulverized in a mortar and then added to a total of 2 kg of polypropylene ...

Embodiment 2

[0224] a) A mixture consisting of 80 parts of dioxane aqueous solution, 13.5 parts of octadecylamine (from Chempur Feinchemikalien und Forschungsbedarf GmbH), 4.15 parts of sodium carbonate and 10.70 parts of a compound of formula (VIIa) was stirred and reacted at 50°C for 5 hours. After the reaction, the reaction mixture was mixed with methanol. The separated precipitate is purified and dried to obtain 15.1 parts of a dye mixture of formula (Ih),

[0225]

[0226] Where t is 1 or 2.

[0227] b) 1.28 g of the dye prepared in step a) was pulverized in a mortar and then added to a total of 2 kg of polypropylene pellets (Moplen RP340R from Basell). The mixture was crushed to homogeneity in a rolling mill, then extruded and pelletized in a twin screw extruder (ZSE 18HP-D40 from Leistritz). The pellets obtained can be processed in an injection molding machine (420C 1000-100 from Arburg) to form a transparent orange-red sample substrate. The dye has high bleed fastness (according to p...

Embodiment 3

[0229] a) A mixture of 40 parts of dioxane aqueous solution, 9.3 parts of dodecylamine (from Sigma-Aldrich Inc.), 4.15 parts of sodium carbonate and 10.74 parts of the compound of formula (VIIa) was stirred at 50°C for reaction hour. After the reaction, the reaction mixture was mixed with methanol. The separated precipitate was purified and dried to obtain 6.9 parts of a dye mixture of formula (Ii),

[0230]

[0231] Where t is 1 or 2.

[0232] b) 1 g of the dye prepared in step a) was pulverized in a mortar and then added to a total of 2 kg of polypropylene pellets (Moplen RP340R from Basell). The mixture was crushed to homogeneity in a rolling mill, and then extruded and pelletized in a twin screw extruder (ZSE 18HP-D40 from Leistritz). The obtained pellets can be processed in an injection molding machine (420C 1000-100 from Arburg) to form a transparent orange-red sample substrate. The dye has high bleed fastness (according to prEN14469-4), high heat-resistant color stabilit...

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Abstract

The present invention relates to a dye of formula (I) where R1, R2, X, Y and t are each as defined in claim 1, to its preparation and to its use.

Description

(1) Technical field [0001] The present invention relates to dyes for coloring polymers, their preparation and use. (2) Background technology [0002] Polymers can be colored in different ways using dyes. One way is the pre-spinning of the polymer, such as mixing a pigment or a dye with the polymer and melting the polymer so that the dye enters the polymer matrix. Other methods involve coloring (more accurately dyeing) the polymer by diffusing the dye from the solution or dispersion into the polymer. Examples are for example polyester, polyacrylonitrile, polyurethane, cellulose or Polymer fibers composed of polyamide are dyed using, for example, disperse dyes, cationic dyes, acid dyes, metal complex dyes or reactive dyes. The use of reactive dyes forms a covalent bond between the dye and the substrate, which gives these dyes / colorings a particularly high fastness. Another method of coloring a polymer is to add a dye to the polymer's monomers or oligomers before the polymer is f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B57/12C08K5/00D06P3/79C08K5/3465
CPCC09B57/12C08K5/0041
Inventor R·伯尔别鲁W·鲁斯J·屈尔魏因C·哈尔夫曼
Owner DYSTAR COLOURS DISTRIBUTION GMBH
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