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US 5,190,679 AGranted
Aqueous based loosener composition adapted for removing cable from a conduit
AssigneeAmerican Polywater Corporation
InventorWilliam P. McDonald
Life of this patent
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Abstract
An aqueous based loosener composition is provided which is particularly useful in removing cable from a conduit. The composition comprises an effective amount of a lubricating agent such as a fatty acid salt compound, an effective amount of a solvating agent such as a nonpolar hydrocarbon compound, and a major proportion of water. A method for removing cable from a conduit using the aqueous based composition is also provided.
Claims14
An aqueous based composition for removing cable from a conduit comprising:
- (a) about 0.5 to 10 wt % of a lubricating agent selected from the group consisting of a C.sub.8 -C.sub.25 fatty acid salt compound, a polyacrylamide compound having a molecular weight of about 1.times.10.sup.5 to 20.times.10.sup.6, and mixtures thereof;
- (b) about 5 to 30 wt % of a solvating agent comprising a nonpolar hydrocarbon compound selected from the group consisting of a liquid terpene, a petrochemical hydrocarbon, a liquid halogenated hydrocarbon, and mixtures thereof, wherein said solvating agent softens or dissolves a binding agent present in said conduit which binds said cable to said conduit;
- (c) about 0.2 to 5 wt % of a nonionic surfactant;
- (d) about 0.1 to 5 wt % of sequestrant;
- and
- (e) a major proportion of water;
- wherein the aqueous composition has a pH of about 3 to 12.
4 more elements
A method for removing cable from a conduit comprising the steps of:
- (a) dispersing the aqueous based composition of claim 17 within the conduit;
- and
- (b) pulling the cable from the conduit after a period of time of about 1 to 3 hours in which said composition has softened or dissolved a binder present in the conduit which binds the cable to the conduit.
Dependencies are inferred from the claim text.