Knowde Enhanced TDS
Identification & Functionality
- Plastics & Elastomers Functions
- Technologies
Features & Benefits
- Advantages
- Free-flowing low dust
- Excellent resistance to extraction
- Excellent long-term light stability in thick sections, specifically polyethylene applications
- Excellent long-term light stability, particularly in thin articles like fibers and films
- Low volatility
- FDA clearances in polypropylene and polyethylene
- Ease of compatibility with other stabilizers
Applications & Uses
- Markets
- Compatible Polymers & Resins
- Applications
BLS 1944 is a polymeric hindered amine light stabilizer offering excellent protection against ultraviolet degradation. BLS 1944 areas of application include polyolefins (polypropylene, polyethylene), olefin copolymers such as EVA as well as blends of polypropylene with elastomers. In addition, BLS 1944 can be highly effective in polyacetals polyamides, polyurethanes, flexible and rigid PVC, as well as PVC blends and in some styrenic elastomer and adhesive specialty applications.
- Guidelines for Use
The recommended loading concentrations in thick sections of HDPE, LLDPE, LDPE and PP range between 0.05% and 0.6% depending on substrate, processing conditions, and long-term stability requirements. Concentration levels of BLS 1944 in films like LLDPE and LDPE range from 0.1% to 1%, and in tapes like PP and HDPE, BLS 1944 concentrations range between 0.2% and 0.8%. Concentrations levels of BLS 1944 in fibers of PP range between 0.1% and 1.0%. The presence of a UV absorber like BLS 1328 is recommended in unpigmented or slightly pigmented articles or or to improve lightfastness of certain organic pigments. The exact formulation to be used is dependent on the substrate, performance requirements, and other factors, and should be determined by the user based on testing to simulate actual conditions of use.
Properties
- Typical Properties
Value | Units | Test Method / Conditions | |
Melting Point | 100-135 | °C | — |
Melting Range | 50 - 70 | °C | — |
Molecular Weight | min. 2,500 | g/mol | — |
Regulatory & Compliance
- Certifications & Compliance
- FDA Regulations
BLS 1944 has been cleared for use in polypropylene and polyethylene under 21 CFR §178.2010.
Packaging & Availability
- Country Availability
- Regional Availability
Storage & Handling
- Shelf Life
- 24 Months
- Storage
This product may be stored up to two years in a sealed container. Containers should be kept tightly closed when not in use and stored in a cool, dry place.