Polymer Process Aid with recycled content

In an effort to come up with a commercially viable recycled tire rubber based product, we developed a low viscosity plasticizer based on blends of recycled / devulcanized scrap tire rubber and virgin polymers. The new product when added in small doses of between 5 and 20 parts replacing regular plasticizers and part polymer base in various tire formulations, helps reduce mix viscosity. In this they are similar to liquid depolymerized natural rubber (DPR) in the market, except it comes in free flowing pellets, not liquid. Like DPR, it cures with the rest of the matrix. Additional attributes are that it confers dimensional stability to mixes, and reduce shrinkage in calendering and molding processes.

It is also useful as impact modifiers in plastics and base for preparation of Thermoplastic Rubbers. This paper would illustrate these attributes.