Polyurethane dispersions in an aqueous asphalt emulsion

Details Polyurethane dispersions in an aqueous asphalt emulsion Polyurethane dispersions in an aqueous asphalt emulsion

2011-03-22

2011-03-22

Harlan, Robert D. (Department: 1762)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C524S060000

Reexamination Certificate

active

07910633

ABSTRACT:
The invention relates to liquid compositions that include an aqueous asphalt mixture and polyurethane dispersion. The polyurethane dispersion includes a polyurethane that is based on an aliphatic polyol backbone based on polytetramethyl ethlene glycol and/or polycaprolactone. The aqueous asphalt mixture in the liquid composition generally constitutes a majority volume percent of the liquid composition. The polyurethane dispersion generally constitutes at least about 0.1 volume percent of said liquid composition.

REFERENCES:
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patent: 4724245 (1988-02-01), Lalanne et al.
patent: 5104938 (1992-04-01), Toyama et al.
patent: 2005/0124736 (2005-06-01), Bonnet et al.
patent: 4039151 (1992-06-01), None
patent: 4408154 (1995-09-01), None

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