Elastomeric Compositions Comprising Reclaimed Elastomer Material
OwnerFrank Pappinventor
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Abstract
Curable elastomer compositions are described which include particles of reclaimed elastomeric material having a particle size of 60 mesh or smaller, sulfur and one or more accelerators, wherein the ratio by weight of the one or more accelerators to sulfur in the composition is at least 1:1. Curable styrene butadiene rubber (SBR) elastomer compositions are also described which include reclaimed elastomeric material, sulfur and one or more accelerators, wherein the ratio by weight of the one or more accelerators to sulfur in the composition is at least 1:1. The cured elastomeric compositions exhibit improved physical properties compared to elastomer compositions containing reclaim material which employ conventional high sulfur cure systems.
Claims20
A curable elastomer composition comprising:
- uncured elastomeric material;
- particles of reclaimed elastomeric material having a particle size of 60 mesh or smaller;
- sulfur;
- and
- one or more accelerators;
- wherein the ratio by weight of the one or more accelerators to sulfur in the composition is at least 1:1.
The curable elastomer composition of claim 4, wherein the micronized rubber powder (MRP) is cryogenically ground micronized rubber powder (MRP).
A curable elastomer composition comprising:
- uncured elastomeric material, wherein the uncured elastomeric material comprises styrene butadiene rubber (SBR);
- reclaimed elastomeric material;
- sulfur;
- and
- one or more accelerators;
- wherein the ratio by weight of the one or more accelerators to sulfur in the composition is at least 1:1.
Dependencies are inferred from the claim text.