Title: Method for preparing bitumen/functionalised elastomer compositions, use thereof in surfacing materials
Application Number: 98800699 Application Date: 1998.04.17
Publication Number: 1226909 Publication Date: 1999.08.25
Approval Pub. Date: 2003.09.03 Granted Pub. Date: 2003.09.03
International Classifi-cation: C08G81/02;C08L95/00;C10C3/02
Applicant(s) Name: Elf Antar France Address:
Inventor(s) Name: J.-P. Planche;P. Maldonado;B. Neff
Attorney & Agent: wang jie
Abstract:
    The invention provides a method comprising contacting, between 100 DEG C. and 230 DEG C. and under agitation, an elastomer, a functionalising agent and optionally, a peroxide compound. The functionalising agent is a thiolcarboxylic acid polyester or a reaction product of a thiolcarboxylic acid or ester with ethylene sulphide. The functionalised elastomer can also be pre-formed, then incorporated into the bitumen. The resulting compositions are usable directly or after dilution, for forming bituminous binders to produce surfacing, coating and waterproofing materials.
Time: 4