ZDT/S - WebShop - Rhein Chemie

Technical Data SheetRhenocure ® ZDT/SSpecialty and standardchemicalsFunctionNon-staining specialty accelerators for rapid vulcanization of EPDM and otherdiene rubbers not containing any secondary amines which can formN-nitrosamines.Product descriptionComposition:Appearance:Density, 20 °C:Sulfur content:Discoloration of vulcanizates:Physiological properties:70 % zinc dialkyl dithiophosphate(selected molecular structure) bound to30 % high-activity silicawhite powderapprox. 1.3 g/cm³approx. 11 %nonesee safety data sheetUseMode of action:Rhenocure ZDT/S is used in conjunction with sulfenamide, thiazole, thiuram,carbamate, and guanidine as a secondary accelerator in the sulfur vulcanizationof EPDM, synthetic diene rubbers, and natural rubber. During vulcanization itdoes not form any secondary amines which can be converted to carcinogenicN-nitrosamines. Rhenocure ZDT/S is highly soluble and disperses very well inall the conventional types of rubber, especially EPDM. Accelerator systems forEPDM manufactured with Rhenocure ZDT/S do not bloom and are characterizedby rapid vulcanization. Due to very good processing safety, the greencompounds have a good shelf life.When optimum proportions are used, accelerator systems for NR demonstrateexcellent reversion and heat aging resistance. With its excellent solubility andnon-staining characteristics, Rhenocure ZDT/S is particularly suitable forcolored, transparent, or translucent compounds. In efficient vulcanization of NRand other rubbers such as IR, SBR, NBR, and IIR, Rhenocure ZDT/S providesvulcanizates with good heat resistance and gives a high degree of crosslinking.Processing:Dosage:The free-flowing powder form of Rhenocure ZDT/S makes it easy to dispenseand ensures rapid dispersion in the mix.When Rhenocure ZDT/S is used as a secondary accelerator, the usual amountadded is 1-4 phr, which can be effectively combined with 0.5-2 phr of a primaryaccelerator. In highly filled compounds (carbon black, mineral fillers, plasticizeroils), the optimum amount may be higher.Rhenocure ZDT/S Version: 5/08. Jun 20121 / 2

Recommended proportions for NR (nitrosamine-free):Rhenogran S-80 0.3-2.0 phrRhenogran MBTS-80 0.5-2.0 phrRhenocure ZDT/S 1.0-4.0 phrRecommended proportions for EPDM (nitrosamine-free):Rhenogran S-80 1.2-2.5 phrRhenogran MBTS-80 1.0-2.5 phrRhenocure ZDT/S 1.5-3.5 phrIf necessary, the aforementioned recommendations can be further adapted tomeet requirements by adding other accelerators such as Rhenogran ZADT-50,Rhenogran Geniplex-80, Rhenogran ZBEC-70 or Rhenogran Retarder E-80.Application:PackagingStorage stabilityHandlingInjection-molded and extruded technical articles of all kinds, e.g. profiles,hoses, sheeting, tank linings25 kg carton with PE bag inside on 600 kg skidin original closed containers under cool and dry conditions 730 dys from date ofproductionFor additional handling information on Rhenocure ZDT/S please consult currentsafety data sheet.With respect to production sites in all world regions technical data sheets may vary indetails among regions. For regional versions would you please contact your local salesrepresentative.Version: 5/08. Jun 2012Our technical advice - whether verbal, inwriting or by way of trials - is given in goodfaith but without warranty, and this alsoapplies where proprietary rights of thirdparties are involved. It does not release youfrom the obligation to test theproducts supplied by us as to their suitabilityfor the intended processes and uses. Theapplication, use and processing of theproducts are beyond our control and,therefore, enti- rely your own responsibility.Should, in spite of this,liability be established for any damage, itwill be limited to the value of the goodsdelivered by us and used by you. We will, ofcourse, provide products of consistentquality within the scope of our GeneralConditions of Sale and Delivery.Rhein Chemie Rheinau GmbHDuesseldorfer Strasse 23-2768219 Mannheim, GermanyTel.: +49-621-8907-0Fax: +49-621-8907-675E-Mail: rubber.info@rheinchemie.comwww.rheinchemie.comRhenocure ZDT/S Version: 5/08. Jun 20122 / 2