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Everything You Need to Know About Chimassorb 944: A Comprehensive Guide

What is Chimassorb 944?

What is Chimassorb 944?

Chimassorb 944 is a high molecular weight hindered amine light stabilizer (HALS). Characterized by its excellent polymer compatibility and high extraction resistance, it provides exceptional light stability for many polymers such as polypropylene, polyethylene, styrenes, unsaturated polyesters, acrylics, vinyl polymers (PVC, PVB), and others. A key benefit of Chimassorb 944 is its ability to provide long-term thermal oxidative stability, making it especially suitable for use in applications exposed to high-temperature processing or extreme environmental conditions.

Chemical composition and properties of Chimassorb 944

Chimassorb 944 is a poly[[6-[(1,1,3,3-tetramethyl butyl)amino]-1,3,5-triazine-2,4-diyl][(2,2,6,6-tetramethyl-4-piperidinyl)imino]-1,6-hexanediol. As a high molecular weight hindered amine light stabilizer (HALS), it possesses the following key chemical properties:

  1. Molecular weight: It has a high molecular weight of 2500 g/mol, which contributes to its excellent resistance to extraction.
  2. Solubility: Chimassorb 944 is insoluble in water and has limited solubility in most organic solvents.
  3. Stability: It exhibits exceptional light and thermal oxidative stability, providing long-term protection for polymers against degradation.
  4. Compatibility: It demonstrates excellent compatibility with a wide range of polymers, enhancing their performance and longevity.
  5. Melting Point: The melting point of Chimassorb 944 is about 85 – 125°C, which allows it to withstand high-temperature processing.

These properties make Chimassorb 944 an ideal choice for many applications, including automotive, agricultural films, and synthetic fibers.

Application and use of Chimassorb 944 in industries

Chimassorb 944 finds application across a broad spectrum of industries due to its superior stability and compatibility properties. Here are some key industries where it plays a critical role:

  1. Automotive Industry: Given its exceptional thermal oxidative stability, Chimassorb 944 is extensively used in the automotive sector, particularly in manufacturing car parts exposed to high temperatures and harsh environmental conditions.
  2. Agriculture: In the agricultural sector, this additive is often incorporated into agricultural films to enhance their resistance against weathering and UV light, thereby prolonging their operational lifespan.
  3. Textile Industry: Chimassorb 944 is used in the synthesis of fibers used in the textile industry, lending them improved stability against degradation and enhancing their durability.
  4. Construction: The construction industry also benefits from the use of Chimassorb 944, which is used in PVC applications to improve resistance to weathering and extend the life of building materials.
  5. Packaging: In the packaging industry, Chimassorb 944 is used in the production of plastic packaging materials, helping to confer improved light and thermal stability and therefore prolonging the shelf-life of packaged products.

These are just a few examples of the widespread utility of Chimassorb 944 across various industries. Its unique combination of high molecular weight, excellent compatibility, and superior stability make it a versatile and valuable additive in various applications.

Understanding the safety implications of using Chimassorb 944

Chimassorb 944, a high molecular weight HALS, is widely used due to its low volatility and minimal migration. However, precautions should be taken to prevent skin and eye irritation and respiratory problems. Proper handling, storage, and personal protective equipment are crucial for safe use across applications.

Relating Chimassorb 944 to hindered amine light stabilizers (HALS)

Hindered Amine Light Stabilizers (HALS) represent a class of additives that offer superior protective characteristics against harmful ultraviolet radiation. Within this category, Chimassorb 944 holds a distinctive position due to its high molecular weight and low volatility. These properties confer upon it a unique ability to provide effective long-term surface and depth protection in various applications. As a HALS, Chimassorb 944 operates through a free radical trapping mechanism, mitigating the harmful effects of UV light on polymers. Furthermore, unlike many UV absorbers, HALS such as Chimassorb 944 does not get consumed in the stabilization process. This characteristic results in an extended effective lifespan, making it a cost-efficient choice in many industrial applications.

How to Utilize Chimassorb 944 Effectively?

How to Utilize Chimassorb 944 Effectively?

Optimal use and blending of Chimassorb 944 with polyethylene and polypropylene

Chimassorb 944 exhibits optimal performance when appropriately mixed with polyethylene and polypropylene. The blending process starts with the measurement of precise quantities of each component. For polyethylene and polypropylene, incorporating Chimassorb 944 at a rate of 0.1 to 0.5% by weight is typically recommended. However, the exact quantity may vary based on the specific requirements of the application in consideration. The components should then be mixed under controlled temperature conditions, ensuring that the mixture achieves a uniform consistency. This uniform distribution of Chimassorb 944 allows for maximum surface and depth protection of the polymer from harmful ultraviolet radiation. Care should be taken during the blending process to avoid overheating, which could potentially degrade the components and reduce the efficacy of the light stabilizer.

Impacts of Chimassorb 944 on UV stability and light resistance of materials

Chimassorb 944 is a Hindered Amine Light Stabilizer (HALS) that greatly enhances the UV stability and light resistance of materials. It neutralizes free radicals produced by photo-oxidation, preventing degradation of the polymer matrix. This comprehensive protection extends to both surface and bulk, resulting in increased lifespan and maintained physical properties. With exceptional thermal stability, it is suitable for high processing temperatures. However, other factors such as additives, thickness, and environmental conditions can influence overall stability. A thorough analysis is recommended for optimal performance.

Incorporating Chimassorb 944 in food packaging and related applications

Chimassorb 944 is a light stabilizer used in food packaging to protect polymers from UV-induced degradation. It enhances product longevity and maintains aesthetic and physical properties. With high thermal stability, it withstands processing temperatures. Compliance with food safety regulations ensures durable and reliable packaging. However, optimal results may require adjusting the additive proportion based on specific conditions and requirements. Careful evaluation is necessary before incorporating Chimassorb 944 in food packaging.

Researching the compatibility and performance of Chimassorb 944 in various materials

The compatibility and performance of Chimassorb 944 have been extensively researched in various materials, revealing its broad applicability and efficiency.

  1. Polypropylene (PP): Chimassorb 944 exhibits outstanding stabilization performance in polypropylene, effectively preventing photo-oxidative degradation. This results in improved color stability and retention of mechanical properties.
  2. Polyethylene (PE): In polyethylene, Chimassorb 944 provides excellent light stability, enhancing the material’s overall longevity and durability. It is especially beneficial in outdoor applications where the material is exposed to UV light.
  3. Polyvinyl Chloride (PVC): While PVC has inherent UV resistance, the addition of Chimassorb 944 further boosts this resistance, making it suitable for long-term outdoor applications.
  4. Polystyrene (PS): Chimassorb 944 can stabilize polystyrene against UV-induced degradation, maintaining its physical properties and aesthetic appearance.
  5. Polyurethane (PU): In polyurethane, Chimassorb 944 provides effective light stabilization, protecting the material from UV light and ensuring the preservation of its properties.

In conclusion, Chimassorb 944 shows a wide range of compatibility with various polymers, ensuring enhanced UV stability and improved material performance. However, the exact proportion and method of incorporation may vary based on specific polymer characteristics and application requirements.

Understanding the recommended dosage and usage guidelines of Chimassorb 944

The dosage and usage of Chimassorb 944 are crucial to its effectiveness in various applications. Here are the recommended guidelines:

  1. Polypropylene (PP): The recommended dosage for PP ranges between 0.1% and 0.5%, depending on the application’s UV exposure levels.
  2. Polyethylene (PE): A dosage of 0.2% to 0.5% is typically recommended for PE to achieve optimal UV resistance.
  3. Polyvinyl Chloride (PVC): For PVC, a dosage of 0.1% to 0.3% is usually sufficient due to its inherent UV resistance.
  4. Polystyrene (PS): For PS, a dosage of 0.2% to 0.5% is recommended to maintain stability and aesthetic appearance.
  5. Polyurethane (PU): PU requires a higher dosage – typically between 0.5% and 1% – due to its lower inherent UV resistance.

These recommended dosages serve as a starting point. Manufacturers should adjust the dosage based on the specific application, UV exposure levels, and other factors. Always perform material compatibility and stability tests before full-scale production.

The Key Features and Properties of Chimassorb 944

The Key Features and Properties of Chimassorb 944

Examining the high molecular weight hindered amine light stabilizer (HALS) in Chimassorb 944

Chimassorb 944 is an effective UV stabilizer with a high molecular weight hindered amine light stabilizer (HALS). It provides excellent light stability for plastics and materials, resisting migration and extraction. With superior thermal stability, it is suitable for high-temperature processing. This HALS improves UV stability and enhances the performance and longevity of incorporated materials.

Assessing the resistance and stability properties of Chimassorb 944 in different applications

Chimassorb 944 displays exceptional stability and resistance properties across a spectrum of applications:

  1. Agricultural Films: Chimassorb 944 provides long-term stability against UV radiation, extending the life of agricultural films and reducing the frequency of replacement.
  2. Automotive Applications: In automotive applications, Chimassorb 944 exhibits excellent heat resistance, maintaining the stability and integrity of components exposed to high temperatures.
  3. Packaging Materials: For packaging materials, this substance ensures color and material stability, offering resistance against migration and extraction, which is crucial for preserving the quality and safety of the packaged goods.
  4. Building and Construction Materials: Its superior resistance to UV radiation helps maintain the aesthetic and structural stability of construction materials, reducing maintenance costs and improving longevity.
  5. Outdoor Furniture: In outdoor furniture exposed to the elements, Chimassorb 944 enhances longevity by preventing UV-induced discoloration and material degradation.

Remember to consider specific environmental and operational conditions while selecting UV stabilizers. Chimassorb 944’s performance may vary depending on the application, UV exposure levels, and other factors. As always, material compatibility and stability tests are recommended before full-scale production.

Determining the safety implications and effective handling of Chimassorb 944

Chimassorb 944 is a highly useful stabilizer, but it requires careful handling due to its chemical properties. Safety guidelines should be followed, including wearing appropriate protective equipment and rinsing thoroughly in case of contact. It should be stored in a cool, well-ventilated area and disposed of according to regulations. Regular training is crucial for staff to understand its hazards and maintain a safe working environment.

Availability and access to Material Safety Data Sheets (MSDS) and related information

Material Safety Data Sheets (MSDS) for Chimassorb 944, along with related safety and handling information, are readily available for reference. These documents provide in-depth information about the compound, including its physical and chemical properties, potential hazards, safety precautions, and first-aid measures. Manufacturers, distributors, and consumers can typically access MSDS online through the manufacturer’s website. It’s crucial to read and understand this information before using the substance. Regular updates to these documents should be monitored to stay abreast of any discoveries or changes in safety guidelines. Consulting these resources and implementing their recommendations can significantly enhance the safety and effectiveness of Chimassorb 944 usage.

Showcasing the benefits and advantages of Chimassorb 944 in various industries

Chimassorb 944 showcases considerable benefits across various industries, owing to its unique characteristics:

  • Plastics Industry: Its primary role here is as a light stabilizer. Chimassorb 944 exhibits exceptional resistance to thermal degradation and ultraviolet radiation, thus prolonging the service life of plastics subjected to these conditions. It is widely used in polyethylene, polypropylene, polystyrene, and PVC applications.
  • Agriculture: In agricultural films, Chimassorb 944 enhances the resilience of plastics used in greenhouses, mulches, and tunnels. It improves their durability and resistance to environmental stress, contributing to increased crop yield and quality.
  • Automotive: It offers superior protection against aging in car interiors and exteriors. It’s especially critical in parts such as dashboards and bumpers, which are frequently exposed to intense sunlight and heat.
  • Packaging: In food and pharmaceutical packaging, Chimassorb 944 helps maintain integrity and quality by preventing degradation due to light and heat exposure.

The versatility of Chimassorb 944 across multiple industries underscores its crucial role in enhancing the performance and lifespan of various products.

How to Source and Procure Chimassorb 944

How to Source and Procure Chimassorb 944

Sourcing Chimassorb 944 involves connecting with reliable suppliers who have a proven track record in the polymer additives industry. It is advisable to gather pricing information from multiple vendors to ensure competitive pricing. Most suppliers offer detailed product specifications, including packaging and storage requirements, to preserve the product’s efficacy.

Digital platforms, including online marketplaces and supplier websites, offer a convenient medium for procuring Chimassorb 944. These platforms often provide comprehensive product listings, including Technical Data Sheets (TDS), which offer granular information about the product’s physical and chemical properties, uses, safety and handling guidelines, and certification details.

Before committing to a large order, it is advisable to request product samples for testing in specific applications. Such tests can help determine the product’s suitability for your needs and validate the supplier’s quality claims.

Remember, the key to successful procurement lies in thorough research, due diligence, and ongoing supplier relationship management.


  1. Chimassorb® 944 LD – BASF- Technical Datasheet: This technical datasheet from BASF provides essential information about Chimassorb® 944 LD, a high molecular weight oligomeric hindered amine light stabilizer (HALS) and heat stabilizer.
  2. Chimassorb® 944 – Plastics & Rubber: A product information file from BASF that discusses the effectiveness of Chimassorb® 944 as a long-term thermal stabilizer in thin and thick articles.
  3. Chimassorb 944 FDL – BASF – Polymer Additives: Another technical datasheet from BASF detailing the specifications and properties of Chimassorb® 944 FDL.
  4. Chimassorb LS 944LD | C35H69Cl3N8 | CID 93418: PubChem’s compound page for Chimassorb LS 944LD, provides information about its molecular structure, synonyms, and related identifiers.
  5. Determination of the hindered amine additive chimassorb: An academic article from ScienceDirect detailing a chromatographic method to determine the polymeric hindered amine additive Chimassorb™ 944 in polyethylene.
  6. CIBA CHIMASSORB®944: A product information sheet from CIBA discussing the effectiveness of CHIMASSORB 944 as a long-term thermal stabilizer and its recommended uses.
  7. Upgraded UV Protection with Chimassorb 944: This source discusses the superior UV light protection offered by Chimassorb 944, making it perfect for industries aiming for quality and reliability.
  8. UV Stabilizer 101: Everything You Need to Know: A comprehensive guide on UV stabilizers, including how they work and the benefits they provide.
  9. Safety Data Sheet: A safety data sheet providing important information about the potential hazards and safety precautions associated with Chimassorb® 944 FDL.
  10. Chimassorb 944 FDL (EVP) | Advanced Materials & Additives: A product page detailing Chimassorb 944 FDL, a high molecular weight hindered amine light stabilizer (HALS), showcasing its excellent compatibility and other properties.

Recommended Reading: Light Stabilizer 622: Everything You Need to Know

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