Non discoloring UV absorber for plastic materials
Hostavin™ B-CAP™
Edition Number :
5
Edition Date :
July 11, 2024
Hostavin B-CAP is a UV absorber with pronounced absorptivity in the high energy (low wavelength) range of the UV spectrum.
Product Information
Benefits
- Hostavin B-CAP is a unique UV absorber with excellent absorption especially in the UVB-range
- Hostavin B-CAP is colorless and even in high concentration in the resin does not lead to any discoloration
- It does not form colored complexes with metal ions as many other UV-absorbers do
Safety
Hazards
Classification according CLP regulation (Regulation (EC) No. 1272/2008, as amended).
Skin sensitization, Cat. 1
For further information please refer to the Material Safety Data Sheet.
Classification according CLP regulation (Regulation (EC) No. 1272/2008, as amended).
Skin sensitization, Cat. 1
For further information please refer to the Material Safety Data Sheet.
Chemical Composition
Chemical nature: Tetraethyl 2,2`-(1,4-phenylenedimethylidyne)bismalonate
Classification: UV absorber
Specifications
Delivery Specifications and (*) General Properties
| Characteristics | Unit | Target value | Test method |
| Appearance | white to off-white powder | visual | |
| Melting point | [°C] | 137 - 140 | QC-999-0452 |
| Hazen color number (10% in dichlormethan) |
max. 50 | QC-999-0452 | |
| Transmittance at 425nm (10% in dichlormethan) |
[%] | min. 93 | QC-070-2120 |
| Transmittance at 500nm (10% in dichlormethan) |
[%] | min. 97 | QC-070-2120 |
| Hostavin B-CAP (GC) | [%] | min. 99 | QC-022-0452 |
Applications
Hostavin B-CAP is recommended as UV absorber for plastic materials, particularly engineering plastics with high demands for transparency, such as polycarbonate and polyesters. It can be equally used also in PVC, styrenics, etc.
Packaging and Handling
Delivery form
Powder
Packaging
20kg PE bag lam. printed with liner
Pallet 180 kg (9 bags)
Storage
Minimum shelf life is three years from date of shipping when properly stored.
The product should be stored dry and at room temperatures.
