阅读说明：本技术 一种高耐氯漂牢度艳蓝色还原染料组合物 (Bright blue vat dye composition with high fastness to chlorine bleaching ) 是由 孙传清 王桂玲 于 2019-10-09 设计创作，主要内容包括：本发明属于精细化工领域,具体涉及一种高耐氯漂牢度艳蓝色还原染料组合物,由重量份数为15~40%的的染料单体A、重量份数为5~20%的染料单体B和分散剂组成。采用本发明的技术方案的有益效果是：本发明提供的艳蓝色还原染料综合性能优异,其耐氯漂牢度可达4级以上。解决了一般艳蓝色还原染料耐氯漂牢度差的问题。(The invention belongs to the field of fine chemical engineering, and particularly relates to a brilliant blue vat dye composition with high fastness to chlorine, which consists of 15 8540% of dye monomer A, 5 ~% of dye monomer B and a dispersing agent in parts by weight.)

1. A brilliant blue vat dye composition with high fastness to chlorine, characterized in that it consists of:

15-40% by weight of a dye monomer A shown in a chemical formula (1);

5-20% by weight of a dye monomer B as shown in chemical formula (2);

the balance is dispersant.

2. The brilliant blue vat dye composition of claim 1, wherein the weight portion of dye monomer A is 20-40%, the weight portion of dye monomer B is 5-18%, and the balance is dispersant.

3. The brilliant blue vat dye composition of claim 1, wherein the weight portion of dye monomer A is 26-35%, the weight portion of dye monomer B is 5-15%, and the balance is dispersant.

4. The brilliant blue vat dye composition with high fastness to chlorine of any one of claims 1 to 3, wherein said dispersant comprises one or a mixture of: sodium lignosulfonate and methyl naphthalene sulfonate formaldehyde condensate.

5. A process for preparing a brilliant blue vat dye composition having high fastness to chlorine as claimed in any one of claims 1 to 3, characterized by comprising the steps of: weighing filter cakes of the dye monomers A and B and a dispersing agent according to the proportion, adding the filter cakes and the dispersing agent into a pulping pot, mixing and pulping, grinding in a high-efficiency sand mill to a terminal point, and filtering and spray-drying to obtain the brilliant blue vat dye composition with high fastness to chlorine bleaching.

Technical Field

The invention belongs to the field of fine chemical engineering, and particularly relates to a brilliant blue vat dye composition with high fastness to chlorine bleaching.

Background

Dyes used for dyeing cellulose fibers: reactive and vat dyes, direct, sulphur and ice dyes, are currently used mainly because of the severe imperfection of direct, sulphur and ice chromatograms and the severe defect of fastness of dyeing. Compared with vat dyes, the reactive dye has complete chromatogram, good rubbing fastness, relatively simple synthesis and dyeing process and relatively low price, but has the defects of poor light resistance, chlorine bleaching resistance, light-sweat-washing resistance and other composite fastnesses, so that the reactive dye is the most main reason for being incapable of completely replacing the vat dye, and the vat dye becomes the first choice especially in the conventional light and medium-depth card leisure fabrics, most of tools, medical and military clothing and the like.

Vat dyes are excellent in various dyefastnesses, whereas many dyes of the blue series have relatively poor fastness to chlorine, such as: blue 1, blue 4, blue 5, blue 6, blue 14 and the like, the fastness to chlorine bleaching is only different in grade 1-3, and the popularization of the dyeing in special application fields is also limited.

Disclosure of Invention

The invention aims to solve the technical problem of providing a brilliant blue vat dye composition with high fastness to chlorine bleaching.

In order to solve the technical problems, the invention is realized by the following technical scheme:

a brilliant blue vat dye composition with high fastness to chlorine is characterized in that the dye composition consists of the following components:

15-40% by weight of a dye monomer A (vat blue 6) of the formula (1)

5-20% by weight of a dye monomer B (vat violet 9) as shown in chemical formula (2)

The balance is dispersant.

Preferably, the dye composition consists of the following components:

20-40% by weight of a dye monomer A (vat blue 6) as shown in chemical formula (1)

5-18% by weight of a dye monomer B (vat violet 9) as shown in chemical formula (2)

The balance is dispersant.

Further, the dye composition consists of the following components:

26-35% by weight of a dye monomer A (vat blue 6) as shown in chemical formula (1)

5-15% by weight of a dye monomer B (vat violet 9) as shown in chemical formula (2)

The balance is dispersant.

Preferably, the dispersant comprises one or a mixture of the following: sodium lignosulfonate and methyl naphthalene sulfonate formaldehyde condensate.

The brilliant blue vat dye with high fastness to chlorine bleaching provided by the invention can be prepared according to the following steps: weighing filter cakes of the dye monomers A and B and a dispersing agent according to a proportion, adding the filter cakes and the dispersing agent into a pulping pot, mixing and pulping, grinding in a high-efficiency sand mill to a terminal point, and filtering and spray-drying to obtain a commodity.

The technical scheme adopted by the invention has the beneficial effects that: the brilliant blue vat dye provided by the invention has excellent comprehensive performance, the fastness to chlorine bleaching can reach more than 4 grade, and the problem of poor fastness to chlorine of common brilliant blue vat dyes is solved.

The dye A adopted by the invention is C.I. vat blue 6, the dye monomer B is C.I. vat violet 9, and the dye A and the dye B can be selected from commercially available products such as C.I. vat blue 6 and C.I. vat violet 9 produced by Jiangsu Yabang dye GmbH.

Color Index (c.i.) is the meaning of "dye Index" which is the international generic name for dyes.

Detailed Description

The present invention will be further specifically described below with reference to examples, but is not limited thereto.