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A dye and leather technology, applied in the field of leather dyeing, can solve the problems of unsatisfactory fastness of leather dyes and failure to meet the requirements of consumers
Active Publication Date: 2014-08-27
BEIJING FANBO CHEM
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Problems solved by technology
Yet the fastness of existing leather dyes is ...
Method used
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Embodiment 1-11
[0018] The formula of the leather dye that table 1 embodiment 1-11 provides
[0019]
Dyes (parts by weight)
The binary copolymer of acrylamide and acrylic acid (parts by weight)
1
10
2
2
40
10
3
30
6
4
20
8
5
70
4
6
60
20
7
50
14
[0020] 8
90
18
9
80
12
10
10
20
11
90
2
[0021] The leather dyes of all the above examples have the technical effects of deepening and color fixing, and all of them are realized by the binary copolymer of acrylamide and acrylic acid (hereinafter referred to as DPR). DPR can be combined with sulfonic acid groups in dyes, thereby reducing the amount of water-soluble groups in dyes, and achieving the purpose of deepening and fixing colors.
[0022] The leather dyes of all the above-mentioned embodiments can also be other functional auxiliary agents, such...
Embodiment 12
[0029] A kind of leather dye and preparation method thereof
[0030] (1) Add 40 parts of Acid Black 210 and 28 parts of Direct Black 168 into the mixing kettle.
[0031] (2) Make the temperature reach 30°C, add 10 parts of DPR, 5 parts of sodium xylene sulfonate, 2 parts of diffusing agent, 2 parts of sodium lignosulfonate, 8 parts of pull-off powder, and 5 parts of silicone brightening agent.
[0032] (3) Stir for 8 hours to fully mix the dye with the mixing aid to obtain a leather dye.
Embodiment 13
[0034] A kind of leather dye and preparation method thereof
[0035] (1) Add 10 parts of Acid Green 16 into the mixing kettle;
[0036] (2) Make the temperature reach 10°C, add 20 parts of DPR, 20 parts of sodium xylene sulfonate, 5 parts of diffusing agent, 5 parts of sodium lignosulfonate, 20 parts of pulling powder, and 20 parts of silicone brightening agent;
[0037] (3) Stir for 2 hours to fully mix the dye and the mixing aid to obtain a leather dye.
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Abstract
The invention relates to the field of leather dying, in particular to leather dye and a preparing method of the leather dye. The leather dye comprises, by weight, 10-90 parts of dye and 2-20 parts of bipolymer of acrylamide and acrylic acid. The dye is acid dye containing a sulfonic group or direct dye containing a sulfonic group. According to the leather dye, the bipolymer of the acrylamide and the acrylic acid is added to serve as a dye-fixing agent, so that the firmness of the dye is increased; compared with common leather dye without the dye-fixing agent, the firmness level of the leather dye under the circumstance of airing or dry shining or wet shining is remarkably improved; in addition, when the color of the leather dye reaches the same degree, the use amount of the leather dye can be reduced at least by 15% compared with the common leather dye without the dye-fixing agent, and thus the leather dye further has the effect of increasing the dark degree.
Description
technical field [0001] The invention relates to the field of leather dyeing, in particular to a leather dye and a preparation method thereof. Background technique [0002] In recent years, with the widespread use of leather products, such as clothing leather, sofa leather, and the demand for aniline leather that can maintain the characteristics of "natural leather" has greatly increased, consumers have put forward higher and newer requirements for leather products, which has promoted The continuous improvement of the leather dyeing process has also put forward higher requirements for the dyes used, and the coloring of leather has become a problem that people pay more and more attention to. The ideal requirements for leather are: ① can be dyed at room temperature; ② good permeability; ③ good consistency, that is, dyeing different leathers (such as chrome tanned leather, vegetable tanned leather, etc.) can get the same color tone; ④ good level dyeing; ⑤ All kinds of fastness ...
Claims
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Application Information
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