Method of internally coating pipeline

Details Method of internally coating pipeline Method of internally coating pipeline

1984-08-27

1985-11-19

Hoffman, James R.

Coating processes

Restoring or repairing

427142, 427232, 427235, B05D 722

Patent

active

045541787

ABSTRACT:
A pipeline needing leakage repair and/or prevention is filled with a liquid sealant in foamed state of the aqueous emulsion type. Then an excess amount of the sealant in the center of the pipeline is drained from the pipeline, and the sealant remaining on the interior wall of the pipeline is allowed to cure wherein the sealant contains fine particles of inorganic oxide weakly adhering to one another into aggregations, said aggregations easily breaking into such fine particles that they can enter and plug fine cavities of the interior of said pipeline.

REFERENCES:
patent: 3287148 (1966-11-01), Hilbush
patent: 4327132 (1982-04-01), Shinno

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