SWELLING ELASTOMERIC POLYMERIC MATERIALS Russian patent published in 2017 - IPC C08K3/10 C08K3/22 C08K3/24 C08L101/00 C08L23/16 C08L33/20 C08L23/22 C09K3/10 C08J9/26 E21B33/12 

FIELD: chemistry.

SUBSTANCE: elastomeric composition comprises the elastomeric matrix and the precursor mixed therewith. Wherein the precursor has the limited solubility in a liquid, such as water, and can be converted into a compound which is soluble in said liquid, such as water, whereby the elastomeric composition becomes swelling. The compositions of the invention may be used in the method which comprises placing the composition in a predetermined location, and converting said precursor into a compound soluble in a liquid by contacting said composition with said liquid before, during and / or after said conversion of said precursor. The product used as an expanding-type means, a gasket or a seal is described as well.

EFFECT: ensuring the swelling regulation of sealing means when used at the application place.

9 cl, 1 dwg, 2 tbl, 1 ex