Thermally expandable rubber composition

Abstract

A thermally expandable rubber composition, including a) at least one solid rubber A from the group consisting of styrene-butadiene rubber, cis-1,4-polybutadiene, synthetic isoprene rubber, natural rubber, ethylene-propylene-diene rubber (EPDM), nitrile rubber, butyl rubber and acrylic rubber; b) processing oil PO, comprising at least one Treated Distillate Aromatic Extract (TDAE); c) at least one vulcanization system VS; d) at least one filler G; e) at least one blowing agent BA. The thermally expandable rubber composition provides low VOC content and exhibits good applicability as well as other material properties after full curing, especially above 200° C. for 40 min, especially good adhesion on substrates, especially metal substrates.

Dependencies are inferred from the claim text.