Fluorescent whitening agent VBL

Optical Brightener VBL is an advanced optical brightener designed specifically for textiles. It is particularly effective on cotton and its blends, but also works on linen and silk fabrics. VBL increases whiteness and is ideal for manufacturers looking for bright, vibrant textiles. VBL is versatile and suitable for both dip and pad dyeing processes, ensuring that the whitening effect is evenly distributed on the fabric.

Main features and typical advantages:
1. Neutral color tone and good wash fastness: One of the significant advantages of VBL is its neutral tone, which enhances whiteness while also creating a more natural look. In addition, VBL has good wash fastness, ensuring that treated fabrics retain their brightness after repeated laundering. This durability is critical to consumer satisfaction and brand reputation.
2. Low dosage, high whitening: VBL allows manufacturers to achieve higher whiteness at lower dosages. This property not only makes VBL a cost-effective option but also reduces the environmental impact of using chemical additives during textile processing. VBL's efficiency ensures manufacturers can meet strict quality standards while controlling production costs.
3. Resistant to weak acids, alkalis and hydrogen peroxide: VBL is formulated to be resistant to weak acids, alkalis and hydrogen peroxide, making it highly stable during all stages of textile processing. This stability ensures that the whitening effect is maintained throughout the dyeing and finishing process to produce the fabric.
4. Alkali-hydrogen peroxide bleaching process: VBL is designed for the alkali-oxygen peroxide whitening process, enabling highly efficient whitening in a single treatment tank. This feature simplifies the production process, shortens processing time, and improves operational efficiency.

Product features:
1. Physical form: VBL is supplied as a solid powder that is easy to handle and integrate into a variety of textile processing systems.
2. Appearance: The appearance of the product is light yellow to yellow powder. This visual signature is typical of optical brighteners and indicates the presence of active whitening ingredients.
3. Ionic properties: VBL is an anionic product ensuring compatibility with other textile auxiliaries and dyes commonly used in textile production. This compatibility is essential to achieve consistent results across different applications.
4. UV absorbency: VBL's UV absorption is greater than 350 nanometers, which helps improve its effectiveness as an optical brightener. This property increases the fabric's reflectivity against UV rays, giving the fabric a more dazzling, vibrant appearance.
5. Moisture content: VBL contains less than 5.0% moisture, ensuring product stability and effectiveness during storage and use.

Product application:
The optical brightener VBL is particularly suitable for the whitening process of cotton and its blended fabrics. It also works effectively on linen and silk fabrics. VBL is highly compatible with a variety of textile processing methods, including:
1. Overflow machine: VBL is ideally suited for use in overflow dyeing machines where its whitening effect can be unleashed to achieve consistent results on a large number of fabrics.
2. Jig dyeing process: The properties of this product make it suitable for jig dyeing processes, effectively dispersing and improving the whiteness of fabrics.

Preparation
1. Pulping: Start by mixing 1 part VBL with 2 parts cold water into a paste. This initial step ensures that the product is fully hydrated and ready for further dilution.
2. Dilution: Gradually add 70-80°C hot water to the paste in a ratio of 50 times the amount of prepared paste. Stir the mixture evenly to make sure the whitener is completely dissolved and evenly distributed.
3. Ready to use: After dilution is completed, the solution can be used in the whitening process of various fabrics.