Bituminous compositions and methods of application to surfaces

Details Bituminous compositions and methods of application to surfaces Bituminous compositions and methods of application to surfaces

1991-01-30

1992-03-31

Morgan, Kriellion S.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524 60, 524 71, C08L 9500

Patent

active

051009382

ABSTRACT:
Disclosed are bituminous blends having improved toughness and elasticity. The blends contain an emulsion of a bituminous binder and an emulsion of a tapered block copolymer formed from a monovinyl aromatic compound and a conjugated diene. Suitable tapered block copolymers include a tapered A-B-A type block copolymer of the A-t-B-t-A configuration, particularly those having an isolated monovinyl aromatic compound content of about 20 to about 90 weight percent, and tapered A-B-A type block copolymers of the A-B-t-A configuration having an isolated styrene content of about 20 to about 90 weight percent of the total monovinyl aromatic compound in the tapered block copolymer. Also disclosed is a method of applying the blends to various surfaces.

REFERENCES:
patent: 3778397 (1973-12-01), Ganon et al.
patent: 4172190 (1979-10-01), Tung et al.
patent: 4196154 (1980-04-01), Tung et al.
patent: 4427837 (1984-01-01), Tung et al.
patent: 4431777 (1984-02-01), Tung et al.
patent: 4904713 (1990-02-01), Vonk et al.

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