Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1988-11-10
1990-12-18
Jacobs, Lewis T.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
524 59, 524 68, 524 69, 524 70, 524 71, C08L 9500, C08L 9106
Patent
active
049786989
ABSTRACT:
Bitumen-polyolefin compositions, e.g. for use as binders in paving compositions, are stabilized by an emulsifier system comprising a polyethylene wax terminally functionalized with acidic groups and having a polymeric main chain structure which is compatible with the polyolefin of the dispersed phase of the binder. In a preferred embodiment, the emulsifier system also includes an inorganic metal compound which will react chemically with the terminal functional groups of the polyethylene wax. Especially preferred is maleated polyethylene wax (as the polyethylene wax) and ferric oxide (as the inorganic metal compound). 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.
REFERENCES:
patent: 3853800 (1974-12-01), Haberl
patent: 3896069 (1975-07-01), Kosaka et al.
patent: 4248749 (1981-02-01), Hayashi et al.
patent: 4738998 (1988-04-01), Uffner et al.
Jacobs Lewis T.
The University of Toronto Innovations Foundation
Woodward David W.
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