ULTRA-FLOW™ 550

ULTRA-FLOW™ 550 by Performance additives is a zinc soaps of unsaturated, high molecular weight fatty acids. It is a very effective material for the physical peptisation of NR. It can be applied in mastication only, as well as in the pre-mastication phase of single stage mixing. The available double bonds in ULTRA-FLOW™ 550 stabilizes free radical formation, thus improving reversion resistance and tear strength. If applied at the recommended dosage which is 2 to 5 phr then it does not bloom from vulcanisates due to its high solubility level. It begins to melt at lower temperatures and is therefore suitable for mixing temperatures around 80°C. As a process additive for solution SBR it will reduce compound viscosity as well as increase flow and reversion resistance. Can be stored for at least 2 years under normal conditions.