Designed Polymers for Processing Aids
Anti-Corrosion-Protection
Polymer Modification
The modification of polyolefin based polymers with VESTOPLAST® leads to improved flexibility at low temperatures and strengthened interlayer adhesion (especially in PE/PP based multilayer films). In combination with crystalline PP polymers VESTOPLAST® is able to reduce the Tg and leads to fully recyclable compounds.
POLYVEST® is used in a large variety of ways in polymer modifications due to its unique properties, esp. as it is a stereospecific polymer, low in viscosity, solvent-free and highly reactive.
Defoamer for Coatings
POLYVEST®
POLYVEST® has been employed as solvent-free synthetic oil in the development of defoamers and de-aerating agents for various coatings and plastics.
EPS Nucleating Agents
VESTOWAX®
VESTOWAX® Fischer-Tropsch waxes are used as processing aids for numerous plastics.
Most important applications are Nucleating agent for expandable polystyrene (EPS).
The addition of VESTOWAX® during polymerisation of styrene results in uniform, reproducible cell structures during the prefoaming process. Furthermore VESTOWAX® acts as a release agent in the final expanding and moulding process resulting in reduced cycle times and waste reduction.
Masterbatches
Best dispersion of fillers and pigments in polymers is very important to effectively influence properties and appearance of finished polymer products. No matter if the target is significant increase of filler contents or highest efficiency with smallest quantities of pigments, Evonik offers solutions for a lot of standard polymers and engineering plastics, either with single additives or combinations of products from different chemistry.
The amorphous character of VESTOPLAST® APAOs effects an outstanding filler and pigment loading capacity. Therefore VESTOPLAST® is used as carrier in highly filled systems, e.g. 85 % filler- and 50 % pigment- masterbatches.
The low viscosity VESTOWAX® Fischer-Tropsch hard paraffins secure outstanding pigment wetting and are therefore designed as dispersing aids for pigments in polyolefine masterbatches. Furthermore, VESTOWAX® is employed in additive concentrates resulting in e.g. improved processability of polyolefines during injection moulding and higher thermal- and UV-stability.
PU Release Agents
POLYVEST®
Aqueous formulations are very popular as release agents for polyurethane foams due to their low VOC.
POLYVEST® in such formulations provide good release properties and has no influence on the foam structure.
Lubricants for PVC
VESTOWAX® is used as external lubricant to facilitate cheap, reliable processes and high quality standing for
- low energy consumption
- high throughput
- perfect (glossy) appearance of the finished article