Fluorescent whitening agent KSN

Optical brightener KSN (C.I.: 368 CAS NO: 5242-49-9) is a product among various optical brighteners. It is known for its reliable performance with low dosage, and has good light resistance, heat resistance and stability. This product is widely used in plastics and polyesters and is a versatile option for improving brightness in films, injection molding and extrusion materials. In addition, the optical brightener KSN can be used in all stages of whitening synthetic resins and is equally effective in coatings, paints and inks.

Product application
1. Plastic:
- General plastics: Improve the whiteness and brightness of various plastic substrates.
- Transparent plastic: Provides effective whitening effect while maintaining the transparency of the material, and requires less dosage.
- Polyester (PET): It is an ideal whitening agent for polyester fibers and resins, ensuring a bright and beautiful surface.

2. Film and molding materials:
- Thin films: Improves the brightness of thin and thick films, ensuring a consistent appearance.
- Injection Molding: Effectively whitens injection molded parts, providing a reliable appearance.
- Extrusion molding: Suitable for extrusion molding process to ensure uniform brightness of the entire material.

Product advantages
1. Effective whitening:
- Small dosage: Even if the concentration is very low, the ideal whitening effect can be achieved.
- Broad compatibility: Works with a variety of materials, including plastics, films and synthetic resins.

2. Durability
- Photostability: Maintains whitening properties even after prolonged exposure to light.
- Heat resistance: Resistant to high temperatures without deterioration, making it an ideal choice for thermal processing materials.

3. Stability:
- Chemical stability: Will not react with plasticizers, foaming agents or cross-linking agents, ensuring stable performance.
- Compatibility: Good compatibility with high molecular weight materials, preventing migration and ensuring long-lasting results.

Features
1. Physical properties:
- Appearance: Light yellow-green crystalline powder, easy to handle and can be integrated into various processes.
- Non-toxic and odorless: safe to use in a variety of applications without affecting the properties of the material.

2. Performance characteristics:
- Good whitening effect: Provides good whitening and brightening effects with a smaller dosage.
- Evenly distributed: Evenly dispersed throughout the material, providing consistent, even whitening results.

3. Flexible application:
- Dry and Wet: Suitable for both dry and wet processing, providing versatile applications.
- Masterbatch: Particularly effective in masterbatch applications to ensure vibrant and bright colors.

Instructions for use
1. Dry method:
- Mix the optical brightener KSN thoroughly with the plastic substrate or resin.
- After melting, extrude the mixture into the desired shape, ensuring even distribution and whitening effect.

2. Wet method:
- Dissolve the optical brightener KSN in a suitable solvent.
- The solution is mixed with plastic materials and processed under appropriate conditions to achieve a whitening effect.

3. Reference ratio (weight ratio):
- General plastics: The proportion of fluorescent whitening agent KSN used is 0.002-0.03%, which is equivalent to 10-30 grams per 100 kilograms of plastic materials.
- Transparent plastics: Use optical brightener KSN at a rate of 0.0005-0.002%, i.e. 0.5-2 grams per 100 kg of plastic material.
- Polyester resin (PET): The proportion of fluorescent whitening agent KSN used is 0.01-0.02%, that is, 10-20 grams per 100 kilograms of resin.

By following the above instructions, users can achieve ideal whitening results while effectively controlling costs. The versatility and effectiveness of optical brightener KSN make it a good choice for industries requiring ideal whitening solutions.