Water-swellable composition and leakage preventing material ther

Details Water-swellable composition and leakage preventing material ther Water-swellable composition and leakage preventing material ther

1981-05-18

1983-05-31

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

C08K 515

Patent

active

043861725

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.

REFERENCES:
patent: 4155957 (1979-05-01), Sasayama
patent: 4162240 (1979-07-01), Hino
Handbook of Thermoplastic Elastomers, pp. 248, 249.

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