Organotin Heat Stabilizer
Organotin heat stabilizer is a kind of heat stabilizer, the main features are high efficiency, high transparency, excellent heat resistance, and resistance to sulfur pollution1 . Organotin heat stabilizers are mainly used in food packaging films and other transparent PVC products1. Both Xindian Chemical Materials and PMC Organometallix offer organotin heat stabilizer products. Organotin heat stabilizers are widely used plastic heat stabilizers, mainly composed of organotin and halogen compounds. Commonly used organotin heat stabilizers include 4,4′-di(tert-butyloxy)diphenyltin (DOS), tri(tert-butyloxy)imidazotin acetate (ITOX) and the like.
Organotin heat stabilizer has the following advantages:
1. Good heat resistance: organotin heat stabilizers can decompose at high temperatures to produce beneficial The active intermediate plays a role in stabilizing the molecular chain of the polymer.
2. Efficient oxidation resistance: organotin heat stabilizers can promote The free radical exchange reaction can effectively reduce the rate of oxidative decomposition of the polymer.
3. Excellent processability: the amount of organotin heat stabilizer added Less, the addition has little effect on the processing and molding properties of the polymer, and will not affect the appearance and performance of the product.
Organotin heat stabilizers are widely used in PVC, PVA, ABS and other plastics In the production of products, it can improve the thermal stability and weather resistance of materials. However, in the process of production and use, it is necessary to pay attention to the impact of organotin heat stabilizers on the environment and take corresponding environmental protection measures.
Organotin heat stabilizers are additives used to prevent polyvinyl chloride (PVC) from degrading during processing and use. They work by scavenging free radicals generated during processing and forming a protective layer on the PVC surface to prevent it from reacting with oxygen and other chemicals.
Organotin heat stabilizers are usually based on tin, a metal that is very effective at scavenging free radicals. The tin atoms in organotin heat stabilizers are bonded to organic groups that help make them compatible with PVC.
There are many different types of organotin heat stabilizers, each with their own advantages and disadvantages. Some of the most common types include:
Tin Mercaptides: These are the most widely used organotin heat stabilizers. They can effectively scavenge free radicals and form a protective layer on the PVC surface. However, they may evaporate and give off an unpleasant odor.
Carboxylic acid Tin: These are less volatile than tin mercaptides and do not have as strong a smell. However, they are not as effective at scavenging free radicals.
phosphonic acid Tin: This is the most expensive organotin heat stabilizer, but it is also the most effective. They are very effective at scavenging free radicals and forming a protective layer on PVC surfaces. They are also non-volatile and odorless.
The selection of an organotin heat stabilizer for a particular application depends on many factors, including the type of PVC used, processing conditions and the desired properties of the final product.
Organotin heat stabilizers are generally considered safe when used according to the manufacturer’s recommendations. However, they can be harmful if ingested or inhaled. It is important to take precautions to avoid contact with organotin heat stabilizers, such as wearing gloves and a respirator when handling them.
Organotin heat stabilizer is an essential component in the production of PVC products. They help keep PVC products safe and durable.