Stock solutions having high concentrations of polymers based on oils of plant and/or animal origin for the preparation of bitumen/polymer compositions

US8748517B2 · kind B2 · utility

Assignee

• TOTAL RAFFINAGE MARKETING · FR

Inventors

• Sylvia Harders · Kürten, DE
• Guillaume Dulac · Falaise, FR

Key dates

• Filing date: Oct 14, 2010
• Grant date: Jun 10, 2014
• Expiry date: Oct 14, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L53/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present disclosure relates to a mother solution free from oil of petroleum origin including at least one oil of vegetable and/or animal origin, from 20% to 50% by mass of polymer, with respect to the mass of the mother solution, with or without at least one cross-linking agent, the oil of vegetable and/or animal origin being acid, with an acid value measured according to the standard NF EN ISO 660 including between 50 and 300 mg KOH/g. This mother solution with a very high concentration of polymer is stable and does not gel and can therefore be diluted and used for preparing cross-linked bitumen/polymer compositions, then bituminous mixes.