Conduit having hydrophilic and oleophobic inner surfaces for oil

Details Conduit having hydrophilic and oleophobic inner surfaces for oil Conduit having hydrophilic and oleophobic inner surfaces for oil

1993-11-01

1995-01-31

Bryant, III, James E.

Pipes and tubular conduits

Distinct layers

Coated

138103, 138110, 138143, 138175, 137 13, F16L 916, F17D 116

Patent

active

053851757

ABSTRACT:
A conduit for transporting an oil and water mixture wherein the conduit has an inner surface is substantially hydrophilic and oleophobic. The surface is characterized by a water absorption capacity of greater than or equal to about 8% by weight, and by a contact angle with the oil of greater than or equal to about 120.degree.. The inner surface material may be a silica containing concrete composition or a polymeric coating composition. A conduit having such an inner surface is wetted by water so as to inhibit adhesion of oil to the conduit.

REFERENCES:
patent: 3639156 (1972-02-01), Pittman et al.
patent: 3892252 (1975-01-01), Poeltmann
patent: 3977469 (1976-08-01), Broussard et al.
patent: 4267213 (1981-05-01), Beck et al.
patent: 4421569 (1983-12-01), Dichter et al.
patent: 4421569 (1983-12-01), Dichter et al.
patent: 5186217 (1993-02-01), Kallinich et al.
patent: 5207248 (1993-05-01), Seki et al.

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