Optical brightener KSB

Optical Brightener KSB (C.I.: 367 CAS NO: 5089-22-5) is an advanced optical brightener known for its reliable whitening effect. It is heat-resistant, weather-resistant and chemically stable. Fluorescent whitening agent KSB is mainly used to whiten plastics and synthetic fibers, and can significantly improve the brightness of colored plastic products.

Product application
1. Plastic industry:
- Polyethylene (PE): Improves the whiteness of polyethylene materials, making them brighter and more attractive.
- Polypropylene (PP): Provides reliable whitening effect for PP materials.
- Polystyrene (PS): Improves the brightness of PS products.
- Polyvinyl Chloride (PVC): Effectively whitens rigid and soft PVC products.
- Acrylonitrile-butadiene-styrene (ABS): has a significant whitening effect on ABS materials.
- Ethylene vinyl acetate (EVA): Improves the whiteness of EVA resin.

2. Paints and varnishes:
- Paints and Coatings: Provides visible whitening effect in a variety of paints and coatings.
- Natural Varnish: Improves the brightness of natural varnish, making it more visually appealing.

3. Food packaging:
- Food packaging materials: Approved for use in food packaging, ensuring the material is bright and beautiful.

Product advantages
1. Ideal whitening effect:
- Highly effective: Even with low concentration, it can achieve ideal whitening effect.
- Wide range of applications: Suitable for a variety of materials, including plastics and coatings.

2. Durability
- Heat resistance: It can still maintain its whitening properties under high temperature conditions.
- Weather Resistance: Reliable performance in outdoor applications.
- Chemical stability: Compatible with various additives and will not cause adverse reactions.

3. Security:
- Low toxicity: The product is produced in accordance with regulatory standards and can be safely used as food packaging materials.
- Environmentally friendly: low toxicity and little impact on the environment.

Features
1. Physical properties:
- Appearance: Light yellow-green crystalline powder, easy to handle and mix with other materials.
- Compatibility: Works well with a variety of polymers and additives, ensuring uniform distribution and no migration.

2. Flexible application:
- Various methods: Dry, wet or masterbatch methods can be used according to specific requirements.
-Customizable concentration: can be adjusted according to the specific whitening needs of different materials.

Instructions for use
1. Dry method:
- Add the optical brightener KSB directly to the plastic substrate before molding.
- Thoroughly mixed with the base material, then extruded and melted in the screw to form granules or special-shaped products.

2. Wet method:
- Mix the optical brightener KSB with a binder or plasticizer to form a homogeneous slurry.
- The slurry is extruded in batches together with the plastic.

3. Masterbatch method:
- Pre-mix the optical brightener KSB with the plastic substrate or resin in a ratio of 1:10-100.
- The mixture can be used directly or extruded to form a masterbatch.

4. Reference dosage:
- General dosage of plastic or resin: 0.01-0.03%, i.e. 10-30 grams per 100 kg of plastic raw material.
- specific materials
- PE: 10-25 g per 100 kg
- PP: 10-25 g per 100 kg
- PS: 10-20 g per 100 kg
- PVC: 10-30 g per 100 kg
- ABS: 10-30 grams per 100 kg
- EVA: 10-30 g per 100 kg
- Transparent plastic film: 1-10 g per 100 kg

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