The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 12, 1993
Filed:
Jul. 21, 1992
Francois Dawans, Bougival, FR;
Institut Francais du Petrole, Rueil Malmaison, FR;
Abstract
The invention relates to a process for the production of bituminous compositions containing residues of polymers and in particular sterile car waste resulting mainly from the crushing and cutting into small pieces of car bodies. The process involves five successive stages, namely a grinding of the polymer mixture, washing with water to eliminate soil, drying, mixing with pulverulent bitumen and shaping, preferably by extrusion and granulation or compacting by compression. The polymer residue-concentrated bituminous compositions can be advantageously used in the diluted state for improving the use and stability characteristics, as well as the mechanical properties of bitumens for use in roads or industry.