In high humidity environments, or environments with high volumes of moisture filler, rubber compounds may contain significant levels of moisture.
In high humidity environments, or environments with high volumes of moisture filler, rubber compounds may contain significant levels of moisture.
High volumes of our calcium oxide desiccants Innovox® or Innovox® MG can be used to successfully eliminate porosity - but this may lead to detrimental effects on finished rubber products, including reduced vulcanisation or increased compression set.
That’s why we’ve developed Birchset® CR, a food contact approved cure stabiliser and compression set reduction additive. Birchset® CR eliminates increased compression set or reduced vulcanisation - without compromising rubber compound performance.
Birchset® CR is an activated polymer, giving it excellent mixing and dispersion characteristics which make it easy to use. Birchset® CR should always be used in combination with Innovox® or Innovox® MG.
Formulated for use in heavy humidity environments, or compounds with high volumes of fillers, Birchset CR is a powerful cure stabiliser and compression set reduction additive, designed specifically for EPDM rubber.
Birchset® CR comes as specially formulated powder and is supplied in 20kg PE lined boxes for easy scoop addition.
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No, Birchset is an activated polymer which can be used in combination with any calcium oxide desiccant but has no desiccant properties itself.
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Birchset suppresses the competitive reaction between calcium and zinc ions in the cure system and facilitates maximum cross link density. If you would like to know more about how Birchset works, please
contact us.
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Addition level will depend on the calcium oxide levels within the compound. In practice, typical dose rate for Birchset would be around 0.5 to 2 phr, or around 20% of the calcium oxide phr If you would like advice on addition levels, please contact us.
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Typically, Birchset is added with calcium oxide at the start of the mixing process. If you would like advice on addition point please contact us.
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Birchset can be used with any calcium oxide desiccant and has been specially formulated to work with Innovox. If you would like advice on product choice please contact us.
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Yes, Birchset is usually added by weighed scoop and is suitable for use in both Banbury type and open mill mixers.
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Yes, Birchset is used by many other compounders worldwide. Ask us for details of reference customers.
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Birchset is almost exclusively used in sulphur cured EPDM systems. Please contact us for recommendations regarding your proposed use.
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There are no problems with using Birchset in combination with other additives. If you would like advice on this, please contact us.
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We have conducted extensive testing on Birchset with external laboratories, such as Artis and ACE Consultants and can provide test reports on request. We can also provide reference customer details within your own field of application. Ask to see our test reports or contact us for advice.
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Birchset is usually supplied in 20kg weight defined boxes for scoop addition to the compound mix. Ask your distributor for details or please contact us.
Here’s just a few of the ways Birchset is beating the competition…
Increase your production capacity
Operate in high humidity conditions without negative side effects
Use a wide range of raw materials while preserving rubber properties
Add Birchset® easily, along with Innovox calcium oxide
Food contact approved
