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Modified carbon black as well as preparation method and application thereof

A technology for modifying carbon black and carbon black, which is applied in textile/flexible product manufacturing, final product manufacturing, climate sustainability, etc., to achieve the effects of improving dispersibility, eliminating yellow light, and good storage stability

Active Publication Date: 2022-02-15
SUZHOU SUNMUN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, grafting phthalocyanine derivatives onto the surface of carbon black to improve the blackness, dispersibility and storage stability of carbon black, and the related technology of coloring in the polyester polymerization process has not been reported

Method used

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  • Modified carbon black as well as preparation method and application thereof

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Effect test

preparation example Construction

[0030] The present invention further provides a kind of preparation method of modified carbon black, comprises the steps:

[0031] (a) Add phthalocyanine to chlorosulfonic acid, carry out sulfonation reaction at a temperature of 130-150°C under the protection of an inert gas, the reaction time is 4-8 hours, then add thionyl chloride, at a temperature of 70-78 The chlorination reaction is carried out at ℃, and the reaction time is 1-3 hours; after the reaction is completed, the phthalocyaninesulfonyl chloride is obtained by cooling suction filtration in ice water and washing to neutrality; wherein, one phthalocyaninesulfonyl chloride molecule contains 2 to 4 a sulfonyl chloride group; in this step (a), the molar ratio of phthalocyanine, chlorosulfonic acid and sulfur oxychloride is 1: (20~30): (5~10); wherein phthalocyanine is metal-free Phthalocyanine or metal phthalocyanine, wherein the metal can be copper, iron, cobalt, aluminum, nickel, calcium, sodium, magnesium, zinc, etc.,...

Embodiment 1

[0037] (a) Add 1 mol of copper phthalocyanine to 25 mol of chlorosulfonic acid, carry out sulfonation reaction at 140°C under nitrogen protection for 6 hours; then add 8 mol of thionyl chloride, carry out chlorination reaction at 75°C for 2 hours ; Suction filtration in ice water and washing to neutrality to obtain phthalocyanine sulfonyl chloride; wherein, one phthalocyanine sulfonyl chloride molecule contains an average of 3.8 sulfonyl chloride groups.

[0038] (b) Add 1 mol of phthalocyanine sulfonyl chloride obtained in step (a) into ice water to disperse evenly, adjust the pH value to 8.5 with ammonia water, add 2.8 mol of modified additives containing polyether chains and 1 mol of pyridine, at a temperature of 30 React at ℃ for 6h, filter and dry to obtain phthalocyanine derivatives containing sulfonyl chloride groups and polyether chains; wherein, the modified additive is NH 2 (OC 2 h 4 ) n OH, the molecular weight is 3400.

[0039] (c) 0.2 parts of phthalocyanine d...

Embodiment 2

[0041] (a) Add 1 mol copper phthalocyanine to 20 mol chlorosulfonic acid, carry out sulfonation reaction at a temperature of 150°C under nitrogen protection for 4 hours; then add 10 mol of thionyl chloride, carry out chlorination reaction at a temperature of 73°C for 3 hours Suction filtration and washing in ice water to neutrality to obtain phthalocyanine sulfonyl chloride; wherein, one phthalocyanine sulfonyl chloride molecule contains an average of 2.0 sulfonyl chloride groups;

[0042] (b) 1mol phthalocyanine sulfonyl chloride obtained in step (a) is added to ice water to disperse evenly, adjust the pH value to 8.0 with ammonia water, add 1.0mol of modified additives containing polyether chains and 1mol pyridine, at a temperature of React at 25°C for 8 hours, filter and dry to obtain phthalocyanine derivatives containing sulfonyl chloride groups and polyether chains; wherein, the modified additive is NH 2 (OC 2 h 4 ) n OH, the molecular weight is 1000;

[0043] (c) 0.1...

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Abstract

The invention discloses modified carbon black as well as a preparation method and application thereof. The modified carbon black is prepared by grafting a phthalocyanine derivative to carbon black of which the surface contains hydroxyl. The preparation method of the modified carbon black comprises the following steps: adding phthalocyanine into chlorosulfonic acid to carry out sulfonation reaction, then adding thionyl chloride to carry out chlorination reaction, and after the reaction, carrying out cooling suction filtration and washing to be neutral to obtain phthalocyanine sulfonyl chloride; then, adding the obtained phthalocyanine sulfonyl chloride into ice water, uniformly dispersing, adjusting the pH value, adding a modified additive containing a polyether chain and pyridine, reacting the mixture, and filtering and drying the reaction product to obtain a phthalocyanine derivative; finally, adding a phthalocyanine derivative and carbon black of which the surface contains hydroxyl into a pyridine-containing solvent, and reacting the system to obtain the modified carbon black. The modified carbon black is small in particle size, good in storage stability and good in self-dispersity, and after the modified carbon black is applied to polyester fiber stock solution coloring, the blackness of polyester fibers can be improved, and therefore, it is guaranteed that the polyester fibers have good mechanical and color fastness performance.

Description

technical field [0001] The invention relates to the technical field of fine chemicals, in particular to a modified carbon black and its preparation method and application, in particular to a modified carbon black applied to polyester fiber dope coloring and its preparation method. Background technique [0002] Polyester fiber is a synthetic fiber obtained by spinning polyester obtained by polycondensation of organic dibasic acid and dibasic alcohol. Because the molecules of polyester fibers are arranged neatly in a linear straight chain, with high crystallinity, good orientation, and small intermolecular gaps, and there are no polar functional groups such as hydroxyl groups and amino groups on the macromolecular chains, there are only ester groups with less polarity. Dye is not easy to penetrate into polyester fiber, resulting in poor dyeability of polyester fiber. [0003] The traditional technology uses the dyeing method to color polyester fibers, which has problems such ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/56C09C3/08C09C3/10D01F1/04D01F6/92
CPCC09C1/56C09C3/08C09C3/10D01F6/92D01F1/04Y02P70/62
Inventor 吕仕铭梁栋杜长森冯淑芹徐利伟
Owner SUZHOU SUNMUN TECH CO LTD
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