Isogran® Products

As a result of the recent developments in technology, the urgent demand for non-dusting and outstanding dispersion solution, Isogran GmbH developed a series of Pre-dispersed Polymer Bound Chemicals, which would overcome the disadvantages of traditional powder form products.

Isogran® IS 90-65

Isogran® IS 90-65 contains approx. 58.5% by weight of a modified polymeric sulphur, which is insoluble in carbon disulphide and other solvents.

Isogran® IS 90-65 is a vulcanizing agent for all natural and synthetic rubber compounds in which sulphur bloom or infiltration of neighbouring layers of compound should be avoided. The use of insoluble sulphur Isogran® IS 90-65 is therefore recommended for all applications that require laying-up, welding, or where good ply-adhesion is essential.

Processing: The thermoplastic, fully compatible polymer binder which is combined with special dispersing agents allows quick absorption and excellent dispersion in the rubber. In this way, optimal activity of the effective substance assured. In order to avoid the insoluble sulphur converting into soluble sulphur Isogran® IS 90-65 should only be added towards the end of the mixing process.

Isogran® ZDTP/S

Isogran® ZDTP/S is used as a special accelerator for EPDM compounds containing accelerators of Thiazol and Thiuram class as well as sulphur and zinc oxide. Vulcanizates accelerated by Isogran® ZDTP/S show no signs of blooming when observing the recommendation for the dosage. When using Isogran® ZDTP/S, accelerator systems can be obtained, that exhibit a very good processing safety and storage stability of the accelerated compounds.

As an ingredient of EV systems Isogran® ZDTP/S can be used to accelerate the vulcanization of NR, IR, SBR, NBR, IIR etc. The vulcanizates are then characterized by good resistance to heat ageing.

Isogran® ZDTP/S is used as a secondary accelerator in the sulphur vulcanization of EPDM and NR in combination with Sulphenamides, Thiazoles and Thiurams. It does not build secondary amines during the vulcanization process. Therefore it doesn’t form hazardous N-Nitrosamines..