Process for mixing modified bitumen by extrusion

Details Process for mixing modified bitumen by extrusion Process for mixing modified bitumen by extrusion

2011-06-28

2011-06-28

Harlan, Robert D. (Department: 1762)

Compositions: coating or plastic

Coating or plastic compositions

Bituminous material or tarry residue

C366S089000, C524S069000, C524S059000, C524S070000

Reexamination Certificate

active

07967905

ABSTRACT:
Provided is a method of mixing a modified bitumen composition and feeding one or more polymeric materials to an extruder, together with asphalt fed at more than one location along a length of the extruder. Improved mixing and elimination of asphalt melting in the production of rolled goods and other products is improved.

REFERENCES:
patent: 3484507 (1969-12-01), Smith
patent: 4610902 (1986-09-01), Eastman et al.
patent: 4873303 (1989-10-01), Blackwood et al.
patent: 5393819 (1995-02-01), Peters
patent: 2007/0092708 (2007-04-01), Gleich et al.
patent: 2009/0213681 (2009-08-01), Ek et al.

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