Polymer blend
AssigneeSentinel Products Corp.
InventorsJohn D. Bambara, Matthew L. Kozma, Todd Cagwin, Robert F. Hurley
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Abstract
The invention relates to polymer blends which can be used both in foamed and unfoamed states as a replacement for conventional EPDM and other elastomers. The composition of the blend includes a single-site catalyzed polyolefin resin having a density of below 0.878 g cm.sup.-3 and up to 40 weight percent a polyolefin including ethylene and propylene. The polymer blend is cross-linked. The polymer blends are formable and foamable. The use of sulfur to vulcanize the polymer blend is not necessary. The polymer blends can be used to make foam for floatation or for making gaskets.
Claims11
A polymer blend comprising a single-site initiated polyolefin resin having a density below 0.878 g/cm.sup.-3 and no more than 40 weight percent of a polyolefin including repeating units derived from ethylene and propylene, wherein a portion of the polymer blend is cross-linked and the polymer blend is capable of being formed into a shaped article.
A method of making a cross-linked polymer blend comprising the steps of:
- providing a polymer mixture including a single-site initiated polyolefin resin and no more than 40 weight percent of a polyolefin including repeating units derived from ethylene and propylene;
- and
- cross-linking the polymer mixture.
A polymer blend comprising a single-site initiated polyolefin resin and a polyolefin including repeating units derived from ethylene and propylene wherein a portion of the polymer blend is cross-linked.
Dependencies are inferred from the claim text.