Patent ID: 8304460
Filing Date: 2012-11-06
Classification: C08C,C08F,C08J,C08L,Y02W,Y10T

Abstract:
1. A method of making a shapeable composite comprising: forming a mixture by (i) treating an aqueous composition comprising one or more aqueous thermoplastic acrylic or vinyl polymer emulsion to increase the particle size of the polymer to a weight average particle size of 1 μm or more, and, optionally, subjecting the treated aqueous polymer to dewatering to form a crumb mixture; and, (ii) combining the one or more acrylic or vinyl polymer with one or more waste rubber vulcanizate having a sieve particle size ranging from 10 to 600 μm in the amount of from 15 to 95 wt. %, based on the total weight of polymer and rubber to form a crumb slurry, wherein, the combining can take place before the treating of the aqueous composition, during the treating of the aqueous composition, after the treating of the aqueous composition but before any dewatering, and after any dewatering; and, (iii) thermoplastic processing the mixture to form the shapeable composite.