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:
Jun. 19, 2012
Filed:
Apr. 06, 2009
Process for cross-linking bitumen/polymer compositions having reduced emissions of hydrogen sulphide
Romuald Botel, Feyzin, FR;
Sylvia Dreessen, Solaize, FR;
Pierre Chaverot, Saint Croix en Jarez, FR;
Charlotte Godivier, Malakoff, FR;
Romuald Botel, Feyzin, FR;
Sylvia Dreessen, Solaize, FR;
Pierre Chaverot, Saint Croix en Jarez, FR;
Charlotte Godivier, Malakoff, FR;
Total Raffinage Marketing, Puteaux, FR;
Abstract
The disclosure relates to a method of preparing crosslinked bitumen/polymer compositions having reduced emissions of hydrogen sulphide, in which, while operating at temperatures between 100° C. and 230° C. and with stirring, for a duration of at least ten minutes, at least one bitumen or mixture of bitumens is brought into contact with at least one polymer and at least one crosslinking agent, said crosslinking agent being represented by the general formula HS—R—SH where R represents a saturated or unsaturated, linear or branched, cyclic and/or aromatic hydrocarbon-based group having 2 to 40 carbon atoms, optionally comprising one or more heteroatoms, and that does not comprise a C═O carbonyl function and/or a O—C═O carboxylate function.