Patent ID: 8329810

Claim:
A dry crumb elastomeric polymeric composition with crumb rubber and silica formed using a continuous flow emulsion polymerization with an activator, a free radical initiator, water, and a terminating agent, wherein the continuous flow emulsion polymerization is performed at no pressure or low pressure and at ambient to above ambient temperature, the composition comprising: a. eighteen percent to ninety three percent by weight of a synthetic elastomeric polymer based on a total weight of the composition, wherein the synthetic elastomeric polymer comprises: (i) sixty percent to eighty two percent by weight of a liquid 1,3-butadiene monomer based on the total weight of the composition; or (ii) eighteen percent to forty percent by weight of a styrene monomer based on the total weight of the composition; b. five percent to eighty percent by weight of a compatibilized silica based on the total weight of the composition, wherein the compatibilized silica has at least one percent by weight of an organosilicon coupling agent bound to at least twenty percent by weight of a surface of the compatibilized silica; c. from one percent to fifty percent by weight of a recycled crumb rubber based on the total weight of the composition; and d. from one percent to forty percent by weight of a carbon black based on the total weight of the composition, wherein the synthetic elastomeric polymer, the compatibilized silica, the recycled crumb rubber, and the carbon black are coagulated and dried to form the dry crumb elastomeric polymeric composition.