Patent ID: 6380284
Filing Date: 2002-04-30
Classification: C08L,E01C

Abstract:
Process for the production of an asphalt binder that contains at least one asphalt, one vulcanizing agent, and at least one polymer that is an elastomer or a thermoplastic, wherein said process includes the following steps:preparing a first concentrated asphalt/polymer material, with a quantity of polymer between 5-35 parts by weight to 95-65 parts by weight asphalt; preparing a second asphalt/vulcanizing reagent material, with a quantity of vulcanizing reagent that is able to release free sulfur in proportions of 1-150 parts by weight free sulfur to 999-850 parts by weight asphalt; continuously mixing at least a portion of the first material with at least a portion of the second material so as to produce a final proportion of polymer greater than at least 4% by weight and up to 35% by weight of the total thereby producing a binder; and transferring the binder to a unit for immediate use.