Manufacturing method of asphalt foam

Details Manufacturing method of asphalt foam Manufacturing method of asphalt foam

1987-12-02

1989-03-07

Yarbrough, Amelia Burgess

Compositions: coating or plastic

Coating or plastic compositions

Bituminous material or tarry residue

106277, 521101, 521110, 521122, C08L 9500

Patent

active

048102989

ABSTRACT:
A method of manufacturing asphalt foam comprising the steps of preparing polyether polyol containing 15 mole % or more of ethylene oxide, preparing urethane prepolymer by making the polyether polyol react with organic isocyanate, and obtaining asphalt foam by mixing the urethane prepolymer with (i) a silicone oil and (ii) an aqueous emulsion of asphalt to obtain an asphalt foam having a five cell structure and excellent water repellancy.

REFERENCES:
patent: 3835117 (1974-09-01), Walaschek
patent: 3932331 (1976-01-01), Doi et al.
Derwent Abstract Accession No. 84-021174/04, Japanese Patent No., J58213029, 12/10/83.

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