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  Seminar schedule

: Plasticizers & processing aids   with Dinner

Healey Museum, Bergseweg 28

Vreeland 3633AK

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Seminar schedule


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Opening door voorzitter VKRT




Visco-Elastic Modifiers from a Renewable Resource: The Performance of the Newly Developed Terpene-Based Tread Enhancement Additive™ (TEA) Technology in PCR Tread Compounds


Roy Juriens

Waxes : new challenges for an ‘old’ product

Waxes : new challenges for an ‘old’ product   

Both vegetable (rice bran, montan, carnauba, etc) and synthetic waxes (paraffins,
polyethylene, Fischer Tropsch) – many times ‘forgotten’ due to the low % in recipes – are
experiencing structural changes in both production technologies and market conditions.
To take advantage of this one must be prepared to be flexible in formulating.
The usage of vegetable waxes will get a boost due to the ‘green wave’ with montan waxes
probably on the losing side (‘Kohlenausstieg’ in Germany). Rice bran wax seems to be the
winner long term but for now growth is hampered by lack of adequate suppliers.
The trend for the availability of paraffin wax, from Group 1 lubricants, is downwards.
Decreasing production capacities in USA and Europe is for now compensated by exports
from especially China. Question is for how long? Also, the increased capacities of Fischer
Tropsch waxes in China are possibly on the brink to replace Fully Refined paraffins in the
larger applications as candles and wood coating. Turmoil is to be expected. And the duopoly
Sasol/Shell under threat.
PE waxes are dominantly supplied by BASF (Luwax), Clariant (Licowax), Innospec (Viscowax),
Honeywell (AC), Great Lakes (Epolene) and BakerHughes (Polywax). Unknown to many
consumers is the existence of competing producers of non-polmerized PE waxes, which can
bring important economic advantages. In many applications also Fischer Tropsch waxes are
increasingly competitive and will replace polymerized PE waxes and their derivatives as
oxidized PE waxes. This is most important in hot melt adhesives, plastics processing and
bitumen modification.
Waxes used in rubber processing is small in non-tire applications and done on the basis of
tradition. A wide range of grades is used. In the tire sector, wax blends are offered by
suppliers, which are closely linked to paraffin wax producers.
In EMEA , Qingdao Sinoplas (China) offers both FT and PE waxes to both direct accounts and
via distribution partners like Fournier Benelux (Oosterhout).


Robert Kobel-Bryk; Schill & Seilacher Struktol AG

Rubber Additives for optimized compounds, processes and products

Rubber Additives for optimized compounds, processes and products   

The manufacturing of rubber articles is a delicate process. Next to the production and the finished article itself many other factors have to be taken into account. Among others those can be of economic, environmental or regulatory nature.

Depending on the target for optimization or existing problems different additive solutions can be selected. Also an important factor to consider is the composition of the compound. Here depending on the polymer, curing system and filler different solutions have to be chosen. For some applications one single product can be sufficient to improve multiple properties at the same time while for others combinations of additives are needed. We will show some examples of how the smart application of additives for the production of rubber articles can help optimize all stages of the production cycle. 

The mixing of rubber compounds on the open mill or in the internal mixer can be clearly improved by the use of additives. Here, shorter mixing cycles or reduced mixing stage can be achieved while the dispersion and homogenization of materials like different polymers or fillers is increased. In standard processing like extrusion, injection or compression moulding the output can be increased or the flow in the mould optimized. Also the curing characteristics can be influenced through the usage of additives and the demoulding facilitated. And of course the most important factor, the properties of the finished product, can also be improved and adjusted according to the final application.

We will show that rubber additives can yield significant processing benefits and property improvements. This way a more effective and economical production of rubber articles can be achieved.






Dr. Holger Bartels; Avokal

Waxes in rubber

Waxes in rubber   

Rubber is a material with so much dissimilar and often incompatible components like raw rubbers, fillers,
plasticizers, antioxidants, metal oxides, processing aids, curing agents and curing accelerators – and a number
of different waxes.
Waxes can be biogenic, from fossil sources or synthetic. Waxes of different sources have got different chemical
structures and different technical utilization. Biogenic waxes typically consist of esters of fatty and waxy acids
and alcohols. Waxes that are contained in crude oil are generally hydrocarbons. Synthetic waxes based on
biological material often still have got carboxylic groups. Synthetic waxes from ethylene and similar are
hydrocarbons differing in structure from those from crude oil. Waxes are used for a wide range of purposes, that
rubber technology is only one of.
To handle the broad variety of materials and compose the best products for each purpose – this is the profession
of wax compounders like company Tromm at Cologne, that is represented by company Heinrich Heller. Their
trade names Carnicotect, Polarwachs, Polarit and others are well known in rubber industry.
Waxes fulfil different tasks in a rubber compound. The best known is that of an antioxidant and anti-ozonant.
But there are others, too.
The different chemical structures are shown and the different usages explained.


Juergen Trimbag; H&R

Plasticizer - What is their function in modern compounds?

Plasticizer - What is their function in modern compounds?   

Plasticizer – What is their Function in Modern Compounds?


Plasticicers are used in nearly all our compounds in different concentrations. The plan is every time to improve the final physical properties of the finished articles. However, we have to succeed with often very inhomogeneous collections of molecules in a often changing chemical environment. The presentation tries to explain the function of plasticizers in our industry and shows somes.


 Seminar schedule


full status: € 25

student: € 25

AIO/OIO: € 25

retired: gratis

BPRI member: € 25


full status: € 50

student: € 50

AIO/OIO: € 50

retired: € 25

BPRI member: € 50

DINNER: € 35

Refund of seminar fee is only possible if cancellation has been received 3 working days before the seminar date.