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Anti Oxidant Masterbatch

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We also provide Anti Oxidant Masterbatch that are formulated with the different loadings of active ingredients. These masterbatches are considered ideal for the specific needs of styrenics and polyolefins. Our rage of antioxidant masterbatches is also marketed under the brand name of “AOKON”.
Need of Anti Oxidant Masterbatch for polymer processing.

During the processing at elevated temperature, all the polymeric material undergo thermal degradation in the presence of atmospheric oxygen. All the critical aspects should be kept in consideration in order to select antioxidant carefully. Degardation of polymers causes in the form of following:

  • Changes in color
  • Detrimental effects on physio mechanical properties
  • Long term aging

Polymers are extensively used in automotive components, electronic goods, furniture, appliances & parts. For this, polymers should be protected from outdoor exposure. To assure this, antioxidants are added to polymers in order to protect them against thermal degradation process.
In addition, we also offer antioxidants in the following two forms:
  • Primary Antioxidants
  • Secondary Antioxidants

Primary Antioxidants:

We also hold expertise in offering primary antioxidants that are used to prevent degradation by destroying free radicals. These radicals have been generated during the degradation of polymers. The primary antioxidants offered by us include hundered amines.
Secondary Antioxidant:

We also provide Secondary Antioxidant that are used to decompose the hydroxide. This has been formed during the reaction of primary antioxidant with free radicals. Therefore, secondary antioxidants can also be used synergically with primary antioxidants. Examples of secondary antioxidants are sulphide, thioesters, phosphates and many more.

Application areas:

Our range of Antioxidant Master batches is extensively used in the following application areas:

Melt Stabilization of Polypropylene:
Owing to the tertiary hydrogen in its structure, polypropylene is considered sensitive to oxidative degradation. By producing lower molecular weight resin with enhancement in melt index and lower physical properties, chain scission results in being the primary outcome of the oxidative degradation.

Melt Stabilization of Controlled Rheology ( CR ) PP:

Controlled rheology is uses a peroxide cracking agent to indicate that Polypropylene has been subjected to post polymerization compounding process. Further, this results in the modification of molecular weight distribution and helps in increasing in the melt flow and Polypropylene resin properties for different applications like fiber spinning and injection molding. Careful selection of antioxidant is of utmost importance in order to have an effective control on the melt stabilization of controlled rheology Polypropylene. Further, antioxidant also forbid increase in the melt flow which has been caused due to the peroxide cracking agent.

Melt Stabilization of HDPE / LLDPE:
The melt index of HDPE/ LLDPE decreases during the multiple extrusion. Through careful selection of antioxidant excellent melt stabilization activity van be achieved.During multiple passes antioxidant should also provide efficient control on the colors that is yellow index of polymer.
Polypropylene Fibers:

The reactivity of nitrogen oxide generated by combustion of natural gases results in the following:

  • Gas yellowing of polyproplyene fibers

  • Extraction of additives of the fibers by lubricant components in the spin finish


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