High Quality Dyes for Leather, Leather Dyes

• Usage: Leather
• Colour: White, Green, Yellow, Purple, Brown, Red, Black, Orange, Blue
• Application Material: Leather
• Appearance: Powder
• Type: Natural
• Solubility: Solubility
• Model NO.: Leather dye
• Transport Package: 25kg/Drum
• Trademark: emperor chemical
• Origin: China
• Production Capacity: 50000mt/Year

Product Description

Product Description

 

What are leather dyes today
The relationship between the dye structure and its performance properties

Introduction
The coloration of leather is typically made with azo dyes and it is interesting to take a deeper look at the factors that allow us to understand these dyes and the process of dyeing leather, While a considerable amount on dyes and dyeing properties has been written over time it has often been out-dated due to new legislation or tannery needs in terms of leather performance. Here we will attempt to bring together the ideas regarding leather dyes as used today and how the structural properties influence the performance properties. The theory being that if one needs specific fastness characteristics one can then use thestructure that best meets these needs.
An overview of the future trends in dyes and the properties they will need tofulfill will also be presented.

Classification of dyes, what are azo dyes?

Coloring agents are those substances that absorb light in the visible wavelength region of 400-700 nm. Hence they appear colored to our eyes.These coloring agents can be either organic or inorganic in nature. We will consider only the organic coloring agents here and from these only those that come under the definition dyes. That is, those organic compounds which aresoluble in the medium they are applied to the substrate, in this case leather dyes applied in water.
The vast majority of dyes used today for dyeing leather fall into the "azo dyes" category. Some 70%of all leather(and textile) dyes listed inthe literature have the azo chromophore as the reason for their colour. In practice today more than 90% of all dyed leather will be coloured with dye(s) containing the azo chromophore.The "azo dyes" have become a much talked about subject, since the introduction of legislation in Germany in 1995 banning the use of a small number of azo dyes that could split under reductive conditions to release toxic aromatic amines. Uninformed comments, especially in the media, about the toxic nature of azo dyes in general have in many instances lead to requests from retailers for textile and leather clothes dyed "without using azo dyes". Such requests are based on ignorance and are misleading for the tanner and dye supplier, since they are a wrong interpretation of the actual situation. It is worth reinforcing again that the German ban on using certain azo dyes that split to release specific toxic aromatic amines, relates only to a very small number of dyes and that the majority of the azo dyes can be used without any grounds for concern. Any reputable dye supplier does not use such amines in their production.
An azo dye is made by coupling an aromatic amine with another aromatic component. A very simple schematic example for the formation of a mono-azo dye is as follows:
What are dye performance requirements today? For quality leathers the leather tanning industry has over recent times tended away from focussing almost exclusively on chrome tanned leather and specifying just the leather dyeing properties of light and wet fastness. Today there is a strong demand for other fastness properties such as migration into PVC and migration into a lacquer finish, which now often have priority before wet fastness and light fastness.Other new properties like stability of colour to climate changes and temperature are also gaining in importance, especially for the car interiorrequirements.

Color Shade

 

 

Packaging & Shipping

Company Profile

HANGHZOU EMPEROR CHEMICAL CO, , Ltd Is engaged in dyestuff

Research and development and production of high-tech enterprises.

Our Company was established in 1998, located in Zhejiang province,

Hangzhou city, Our dyestuff is widely use on different applications such as painting, leather, paper, cotton, wood, fertilizer, seed and so on.

In 2000, Our Brand "Enoch® " was born, with years of service

Quality improvement and technical innovation, Today "Enoch ® "have been reputed for both domestic and international market.

EMPEROR, is committed to provide complete customer satisfaction when it comes to the quality, performance, timely delivery and prices of products. We believe Quality is the life of EMPEROR, We′ve addressed certain critical measurements to assure quality and performance, such as viscosity, surface tension, pH, conductivity, color, and purity, light fastness in order to control as many variables as possible and produce best product possible.

OUR MISSION is to lead the industry in creating value for our customers through dedication on standards, quality, productivity and customer satisfaction.

OUR VISION is EMPEROR aims to be best dyestuff producer in the chemical industry.

FAQ

 

FAQ: WHAT YOU CARE

Q1. How can I get the samples for testing?

A:

1.We can provide a certain quantity of free samples. Please give the specific CAS or CI NO. of the product and we will give you the sample based on our standard.

2.You can send your samples to our office and we will send back the copy samples for you. It's a more efficient way.

Q2. How can I get the price of needed products?

A:

1.Please give the exactly CAS or CI Number, quantity, packing, destination port or specs requirements. We can according to your exact requirements to give you the price.

2.You can send us a sample, we can according to your sample give you a counter sample and price.

Q3. I don't know whether your product can be available, how can I order this from you?

A:

It's the best way if you can send us a sample, so we can according to your samples give you a counter sample for checking the quality. Also we will quote a price for you to check the cost. After confirming all of this, you can contact our sales for an order.

Q4. I am a small wholesaler, do you accept small order?

A:

It's no problem if you are a small wholesale, we would like to grow up with you together.

Q5. How to use the product?

A:

We are pleased to be requested the application methods from you and we will use words and videos to tell how to use. We also have application engineers can provide onsite service for you customers.

 

Q6. Can you make OEM service of your products?

A:

Yes. We can accept OEM service. Also we have provided OEM service to lots of big and famous companies in the order.