Water-swellable composition and leakage preventing material therewith
US4386172A · kind A · utility
8Cited by
2References
11Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | May 18, 1981 |
| Grant date | May 31, 1983 |
| Priority date | — |
| Expiry date | May 18, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2200/0625
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention provides a novel water-swellable polymeric composition useful as a leakage-preventing material filling an interstice, for example, in a concrete body or at a pipe joint. The polymeric composition comprises (a) a hydrophilic or water-soluble polymer having carboxyl groups in the molecule, (b) a water-soluble epoxy compound having at least two epoxy groups per molecule and (c) a rubbery polymer as blended with the components (a) and (b) in the form of an aqueous dispersion, e.g. a rubber latex, having been dried and subjected to a heat treatment, preferably, as impregnating a fibrous core material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.