Fluorescent whitening agent KCB

Optical brightener KCB (C.I.: 367 CAS NO: 5089-22-5) is a highly efficient optical brightener known for its reliable whitening effect. It has good heat resistance, weather resistance and chemical stability. Fluorescent whitening agent KCB is mainly used to whiten plastics and synthetic fibers, and can significantly improve the brightness of colored plastic products.

Application areas:
1. Plastic industry:
- Polyethylene (PE): Enhances the whiteness of PE materials, making them brighter and more attractive.
- Polypropylene (PP): Provides a good whitening effect in PP materials.
- Polystyrene (PS): Improve the brightness of PS products.
- Polyvinyl Chloride (PVC): Effectively whitens hard and soft PVC products.
- Acrylonitrile-butadiene-styrene (ABS): brings significant whitening effect to ABS materials.
- Ethylene vinyl acetate (EVA): Enhances 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: Enhances the brightness of natural varnish, making it more visually appealing.

3. Food packaging:
- Food packaging materials: can be used for food packaging, ensuring the materials are bright and attractive.

Product advantages:
1. Good whitening effect:
- Highly effective: Even with low concentration, good whitening effect can be achieved.
- 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: Good performance in outdoor applications.
- Chemical stability: Compatible with various additives and will not cause adverse reactions.

3. Security:
- Low toxicity: Produced in accordance with regulatory standards and can be safely used in food packaging materials.
- Environmentally friendly: low toxicity, reducing impact on the environment.

Features:
1. Physical properties:
- Appearance: Light yellow-green crystalline powder, easy to handle and can be mixed with other materials.
- Compatibility: Can be used with a variety of polymers and additives to ensure uniform distribution and no migration.

2. Performance characteristics:
- Efficient whitening: Only a small amount is needed to achieve obvious whitening effect, which is highly cost-effective.
- Uniform brightness: Evenly dispersed in the material, providing consistent whitening effect.

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

Instructions for use:
1. Dry method:
- Add an appropriate amount of optical brightener KCB directly into 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 KCB with a binder or plasticizer to form a homogeneous slurry.
- Extruding the slurry together with the plastic in batches.

3. Masterbatch method :
- Pre-mix the optical brightener KCB 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:
In the general use of plastics or resins, the recommended reference dosage is 0.01-0.03%, that is, 10-30 grams per 100 kilograms of plastic raw materials. For different materials, the specific dosage is as follows:

- Polyethylene (PE): add 10-25 grams per 100 kg
- Polypropylene (PP): add 10-25 grams per 100 kg
- Polystyrene (PS): add 10-20 grams per 100 kg
- Polyvinyl chloride (PVC): add 10-30 grams per 100 kilograms
- Acrylonitrile-butadiene-styrene (ABS): add 10-30 grams per 100 kg
- Ethylene vinyl acetate (EVA): add 10-30 grams per 100 kg
- Transparent plastic film: add 1-10 grams 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 KCB make it a reliable choice for industries requiring reliable whitening solutions.