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Antoxidants

The ageing of latex products is affected by a large number of interacting factors, e.g. exposure to oxygen, heat, light and ozone. Antioxidants included in latex and latex products reduce the rate of polymer’s degradation. The effectiveness of an antioxidant in latex depends not only on the chemical structure but also on its particle size and surface area.

Schill+Seilacher’s aqueous antioxidant dispersions:

  • Easy to use
  • Highly concentrated and effective at low dosages
  • Dramatically improved ageing behaviour
  • Not discolouring and non -staining

Our state of the art production processes produce emulsions that exhibit a very narrow fine particle size distribution. More than 90 % of the particles in a typical Struktol emulsion are less than 1 μm in size, leading to a significantly increased particle surface area that is five times greater than that of dispersions produced in conventional grinding machines, and up to 500 times more particles per gram of antioxidant. The result is a more uniform distribution of antioxidant particles throughout the latex product, quicker dissolution of the antioxidant into the rubber phase, and better antioxidant performance at low dosage levels.

Struktol® LA 190
  • Butylated reaction product of p-cresol and dicyclopentadiene
  • 30 % active material
     
  • General purpose antioxidant
  • Improves heat resistance

Usage:

  • Adhesives based on NR, IR, SBR, CR, NBR
  • Carboxylated rubbers and ABS
Struktol® LA 329
  • Butylated reaction product of p-cresol and dicyclopentadiene, thio synergist (1:1) and anionic surfactants
  • 40 % active material
     
  • Improves heat resistance
  • Complies with 21 CFR 177.2600 (FDA) and 21 CFR 175.105 (FDA) (Max. concentration has to be considered)
  • Complies with BfR XXI (Max. concentration has to be considered)

Usage:

  • Adhesives
  • ABS Latex
Struktol® LA 331
  • Hindered and alkylated phenols with thio synergist (1:1) and anionic surfactants
  • 40 % active material
     
  • Improves heat resistance

Usage:

  • Foam products
  • Carpet backing
  • SBR Latex
Struktol® LA 435
  • Butylated reaction product of p-cresol and dicyclopentadiene
  • 40 % active material
     
  • General purpose antioxidant
  • Improves heat resistance
  • Fine particle size
  • Non staining
  • Complies with 21 CFR 177.2600 (FDA) and 21 CFR 175.105 (FDA) (Max. concentration has to be considered)

Usage:

  • Dipped goods
  • Adhesives
  • Latex bands
Struktol® LA 455
  • Hindered and alkylated phenols and anionic surfactants
  • 40 % active material
     
  • General purpose antioxidant
  • Improves heat resistance
  • Non staining
  • Alternative to Struktol® LA 435
  • Complies with 21 CFR 177.2600 (FDA) and 21 CFR 175.105 (FDA) (Max. concentration has to be considered)

Usage:

  • Dipped goods
  • Adhesives
  • Latex bands