Fluorescent Whitening Agent CL

Fluorescent Whitening Agent CL is a high-performance, yellow liquid that belongs to the class of triazole stilbene derivatives. With an anionic nature, this agent is known for its neutral shade and is highly comparable to similar products such as Uvitex CLE (Baver). It has been specifically designed to enhance the brightness and whiteness of various fibers, making it a crucial component in textile processing.

Product Features

1. Superior Fastness on Nylon  
   - Elastic Nylon: Fluorescent Whitening Agent CL is particularly effective on nylon fibers, especially elastic nylon. It offers good fastness characteristics, ensuring that the whiteness and brightness of the fabric remain intact even under challenging conditions.
   - Lightfastness: The agent provides outstanding lightfastness, making it ideal for applications where fabrics need to withstand sunlight exposure. It maintains a lightfastness grade above 5, ensuring long-lasting brightness.
   - Stability in Harsh Conditions: Fluorescent Whitening Agent CL is stable under conditions involving chlorous acid compounds, seawater, and heat, making it versatile for various environments.
   - Hard Water Resistance: It exhibits strong stability and fastness even under hard water conditions, ensuring consistent results across different water qualities.

2. Compatibility with Cellulosic Fibers  
   - pH-Sensitive Applications: This agent is also suitable for cellulosic fibers when used in a pH environment of less than 9. It ensures the fibers achieve a high level of whiteness without compromising the fabric's integrity.

Product Applications

1. Nylon Processing  
   - Batch Processing: Fluorescent Whitening Agent CL is ideal for nylon batch processes. It can be used in both hydrosulfite and sodium chlorite baths, ensuring thorough and even whitening of the nylon fabric. It offers flexibility in terms of dosage and processing conditions, making it adaptable to various manufacturing needs.
   - Padding Process: This agent is also highly effective in nylon padding processes. By using the correct dosage along with leveling and fixing agents, manufacturers can achieve uniform whitening. The drying process, conducted at temperatures between 105-120℃, ensures the agent is well-fixed on the fibers.

2. Cotton Exhaust Process  
   - Cotton Whitening: Fluorescent Whitening Agent CL can be used in the cotton exhaust process, providing efficient whitening of cotton fibers. The agent is compatible with sodium sulfate and fixing agents, ensuring good results in a short processing time.

Usage Methods

1. Nylon Batch Process
   - Hydrosulfite Bath:  
     Dosage: 0.5-1.5% o.w.f  
     Hydrosulfite: 2-3g/L  
     Detergent: 0.5-1.0g/L  
     pH: 4-5 (adjusted with formic acid)  
     Liquor ratio: 1:10-20  
     Temperature × Time: 95-100℃ × 30-40 minutes

   - Sodium Chlorite Bath:  
     Dosage: 0.5-1.5% o.w.f  
     Sodium chlorite: 3-8g/L  
     Sodium nitrate: 1g/L  
     Detergent: 0.5-1.0g/L  
     Stabilizer: 0.5-1.0g/L  
     pH: 3-4 (adjusted with formic acid)  
     Liquor ratio: 1:10-20  
     Temperature × Time: 95-100℃ × 30-40 minutes

2. Nylon Padding Process
   - Dosage: 10-20g/L  
   - Leveling agent: 1-2g/L  
   - Fixing agent: 5-10g/L  
   - Pick up: 60%-80%  
   - Drying: 105-120℃

3. Cotton Exhaust Process
   - Dosage: 0.2-1.5% o.w.f  
   - Sodium sulfate: 2-5g/L  
   - Fixing agent: 5-10g/L  
   - Liquor ratio: 1:10-20  
   - Temperature × Time: 80-100℃ × 30-40 minutes

Packing

Fluorescent Whitening Agent CL is available in 25kg PE buckets or can be customized according to customer requirements, ensuring convenient and flexible packaging options for different industrial needs.

This comprehensive introduction to Fluorescent Whitening Agent CL highlights its key features, versatile applications, and effective usage methods, making it an essential product for achieving high-quality whitening results in the textile industry.