Moisture-impervious water-swellable clay-containing...

Details Moisture-impervious water-swellable clay-containing... Moisture-impervious water-swellable clay-containing...

2006-04-04

2006-04-04

Egwim, Kelechi C. (Department: 1713)

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

C106S426000, C524S445000, C524S556000

Reexamination Certificate

active

07022398

ABSTRACT:
A waterproofing article in the form of rod-, or rope-shaped clay-containing compositions, and a method of waterproofing using the article, whereby a water-penetrable, degradable, or water-soluble film or coating forms an outer surface of the article for avoiding premature hydration of an underlying clay-containing composition. In the preferred embodiment, an inner core of a water-swellable clay-containing composition includes a coating of a water-removable or degradable material, completely encasing the major outer surfaces of the composition, having controlled, predetermined water-penetration; high pH degradability; or water-solubility so that the core of water-swellable clay-containing composition is quickly hydrated after water-penetration of the coating material, and to prevent clay hydration during installation, prior to water-penetration of the coating material.

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