C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 95/00 (2006.01) C09D 195/00 (2006.01)
Patent
CA 2058006
A bitumen emulsion of anionic or cationic type having a breaking additive is disclosed. The breaking addi- tive comprises a water-in-oil emulsion wherein an aqueous solution of a substance which has a neutrali- zing effect upon the bitumen emulsion when added there- to is dispersed in an oil continuous phase. The bitumen emulsion is prepared by a) preparing an aqueous solution of a neutralizing substance, b) emulsifying the aqueous solution of a) in oil to form an invert emulsion, and c) mixing the invert emulsion of b) into a bitumen emulsion of anionic or cationic type. The bitumen emulsion can be used as a bind er in road building or road maintenance or in construction work.
Aktiebolaget Nynas Petroleum
Ridout & Maybee Llp
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