Method for setting or resetting poles in the ground with foamed

Details Method for setting or resetting poles in the ground with foamed Method for setting or resetting poles in the ground with foamed

1974-07-19

1976-07-13

Gilliam, Paul R.

E02D 526

Patent

active

039686574

ABSTRACT:
An improvement in the known method of setting or resetting poles in the ground with foamed polyurethane resins formed in-situ from polyisocyanate and resin reactive therewith, is described. Ground water is often encountered in pole setting and affects polyurethane foam formation by undesirably reacting with polyisocyanate to give a foam of insufficient density and strength. This improvement comprises extending polyurethane components with a nonvolatile water-immiscible material (e.g. hydrocarbon oil) which inhibits the undesired reaction of water and polyisocyanate and reduces the unit cost of the polyurethane foam. The addition to the polyurethane composition of termite repellant materials and preservative agents for the pole is also described.

REFERENCES:
patent: 3201359 (1965-08-01), Herrick et al.
patent: 3390119 (1968-06-01), Alexander et al.
patent: 3403520 (1968-10-01), Goodman
patent: 3798186 (1974-03-01), Nakade et al.
patent: 3805531 (1974-04-01), Kistner

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