Bitumen - polyolefin compositions

Details Bitumen - polyolefin compositions Bitumen - polyolefin compositions

C - Chemistry, Metallurgy

08

L

400/1617

C08L 23/00 (2006.01) C08K 3/22 (2006.01) C08L 95/00 (2006.01) E01C 7/26 (2006.01)

Patent

CA 1282513

ABSTRACT OF THE DISCLOSURE Bitumen - polyolefin compositions, e.g. for use as binders in paving compositions, are stabilized by an emulsifier system comprising a polyolefin wax with terminal functional groups and a polymeric main chain structure which is compatible with the polyolefin of the dispersed phase of the binder. In a preferred embodiment, the emmulsifier system also includes a metal oxide compound which will chemically react with the terminal functional groups. Especially preferred is maleated polyethylene wax and ferric oxide. The emulsifier system forms a sheath of inorganic material around the dispersed polyolefin droplets, to stabilize them and to hinder their floatation to the surface of the binder composition.

503241

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