RHENOCURE® SDT/S

Product Description

Rhenocure® SDT/S is a sulfur donor based on phosphoryl polysulfide bound to silica for the vulcanization of natural and synthetic rubbers. Unlike conventional sulfur, Rhenocure® SDT/S forms mono- and disulfidic crosslinks, resulting in superior heat aging resistance, low compression set, and outstanding reversion stability. 

Vulcanizates show a broad curing plateau, making Rhenocure® SDT/S ideal for high-temperature processes such as salt bath vulcanization and injection molding. No blooming occurs, even at higher dosages, and the product is easily incorporated into the compound. In many cases, the use of Rhenocure® SDT/S allows for a reduction in conventional sulfur.

THESE SPECIAL FEATURES MAKE RHENOCURE® SDT/S SO SUCCESSFUL

• Forms mono- and disulfidic bridges for excellent heat aging resistance

• Outstanding reversion resistance and broad curing plateau

• Improves compression set before and after hot air aging

• Easy incorporation and uniform dispersion in all common rubbers

• Color stability of finished products

THE MOST COMMON AREAS OF APPLICATION

• NR compounds for tire carcasses, engine mounts, and dynamic parts

• SBR, NBR, and EPDM compounds requiring improved aging and reversion resistance

• Salt bath vulcanization and injection molding at high temperatures

• Technical rubber goods demanding long-term durability and stability