Polymer composition, swellable composition comprising the polymer composition, and articles including the swellable composition

摘要

A polymer composition includes a base polymer comprising a hydrocarbon rubber, an acrylic copolymer, and a refined oil in which the acrylic polymer is dispersed. The polymer composition is swellable when treated with an aqueous medium, non-aqueous medium, or both. A sealing element for a flow channel includes an expandable section filled with a swellable composition that swells when treated with a swelling material. The swellable composition includes the polymer composition, and the swelling material may be aqueous, non-aqueous, or both.

主权项

1. A sealing element for a flow channel comprising:
an expandable section; and a swellable composition disposed in the expandable section and comprising: a base polymer comprising polyethylenes, polypropylenes, poly(ethylene-co-propylene), polyamides, polyesters, polyurethanes, polyvinylchlorides, ethylene-propylene-diene monomer rubber, butadiene rubber, styrene-butadiene rubber, natural rubber, or a combination comprising at least one of the foregoing; an acrylic copolymer comprising an acidic monomer and an amide monomer present in a weight ratio of 95:5 to 5:95; acrylic copolymer being present in an amount of 30 to 200 parts by weight per hundred parts by weight of the base polymer; and a refined oil in which the acrylic copolymer to form a liquid dispersed polymer;
wherein the swellable composition is configured to swell when treated with a swelling material which comprises an aqueous medium, non-aqueous medium, or both.