|Grade||Product form||Active substance [%]||Dosage[phr]||Literatur|
|Conventional single accelerator preparations|
|Deovulc OTOS-80||beige granules||80||0,5 – 2||Laboratory Exposé 1|
|Deovulc M||white to beige powder||> 95||0,6 – 1,0 (Konv.)
0,5 - 1,5 (SEV)
0,5 - 2,0 (EV)
|Nitrosamine-free single accelerator preparations|
|Deovulc TP 4-75||white to beige powder||75||1,5 – 4,0||DOG-Kontakt 43 Laboratory Exposé 2|
|Deovulc TP 4-75 V||white to beige powder||75||1,5 – 4,0||DOG-Kontakt 43 Laboratory Exposé 2|
|Deovulc DPG||whitish powder||96||0,2 – 2,0||DOG-Kontakt 43|
|Deovulc HDC-70||beige granules||70||1,0 - 3,0||Laboratory Report 4551|
Deovulc OTOS is a preparation of the sulphenamide accelerator OTOS (N-Oxydiethylenethiocarbamyl-N’-oxydiethylenesulphenamide) and is supplied as soft granules. Deovulc OTOS enables this accelerator to be incorporated dust-free and spot-free. Deovulc OTOS improves the reversion stability, as well as the mechanical and dynamical properties of compounds. It has proven to be very effective for antivibration applications (lower compression set, fatigue resistance, and oxidative stability).
Deovulc M (DTDM – Dithiodimorpholine) is a sulphur donor which splits off sulphur during vulcanization, thus enabling steep vulcanization curves. Monosulphidic bridges are formed, resulting in good heat-resistance and low compression sets for the vulcanizates. Deovulc M can be used in all standard polymers as a replacement for sulphur in heat-resistant compounds. In conventional systems, 1.0 to 1.5 phr sulphur can be replaced by 0.6 to 1.0 phr Deovulc M. In many cases, ratios of 1:1 Deovulc M / Sulphenamide or 1:1.5 Deovulc M / MBTS have proven to be most effective. In SEV systems, equal amounts of sulphur can be replaced by Deovulc M. In EV systems, double amounts of Deovulc M are recommended.
Deovulc TP 4-75 / TP 4-75 V are zincdialkyldithiophosphates absorbed on a silica carrier. They are typically employed as primary accelerators for nitrosamine-free EPDM and diene rubbers. Due to a high solubility and light colour, both are particularly suitable for the application in light compounds and also allow for high dosages without staining or blooming.
Deovulc DPG (Diphenylguanidine) is a widely used accelerator with good dispersion characteristics. Deovulc DPG can be used as a strong secondary accelerator, preferably in combination with thiazoles or sulphenamides. As a secondary accelerator, Deovulc DPG clearly increases the cure rate and state of cure. Particularly for compounds containing precipitated silica, Deovulc DPG acts as an activator, achieving good mechanical properties.
Deovulc HDC-70 is an aminic curing agent for AEM, ACM and HT-ACM polymers. The soft and non-dusting granules are protected against moisture and easy to dose, weigh in and disperse.