Cooper-standard Automotive, Inc.

Roland Herd-Smith

Krishnamachari Gopalan

Robert J Lenhart

Gending Ji

A roofing membrane and a method of making the same is provided. The roofing membrane includes a top layer having a flame retardant and a first silane-crosslinked polyolefin elastomer with a density less than 0.90 g/cm; a scrim layer; and a bottom layer having a flame retardant and a second silane-crosslinked polyolefin elastomer with a density less than 0.90 g/cm. The top and bottom layers of the roofing membrane both exhibit a compression set of from about 5.0% to about 35.0%, as measured according to ASTM D 395 (22 hrs @ 70° C.).

Roofing membranes, compositions, and methods of making the same

A combined sealing member is provided that includes a composition comprising two or more polyolefin elastomers selected from the group consisting of a dense, a micro-dense and a dynamic silane-crosslinked polyolefin elastomer having a respective density of less than 0.90 g/cm, less than 0.70 g/cm, and less than 0.60 g/cm. The combined sealing member exhibits a compression set of from about 5.0% to about 35.0%, as measured according to ASTM D 395 (22 hrs @ 70&#xb0; C.).

Combined seals, compositions, and methods of making the same

An elastomeric article is provided that includes a composition having a silane-crosslinked polyolefin elastomer with a density less than 0.90 g/cm. The elastomeric article can exhibit a compression set of from about 5.0% to about 35.0%, as measured according to ASTM D 395 (22 hrs @ 70&#xb0; C.). The silane-crosslinked polyolefin elastomer can include a first polyolefin having a density less than 0.86 g/cm, a second polyolefin having a crystallinity less than 40%, a silane crosslinker, a grafting initiator, and a condensation catalyst.

Polyolefin elastomer compositions and methods of making the same

A microdense sealing member is provided. The microdense sealing member includes a composition having a foamed silane-crosslinked polyolefin elastomer with a density less than 0.70 g/cm. The microdense sealing member can exhibit a compression set of from about 5.0% to about 35.0% measured according to ASTM D 395 (22 hrs @ 70&#xb0; C.). The foamed silane-crosslinked polyolefin elastomer can be produced from a blend including a first polyolefin having a density less than 0.86 g/cm, a second polyolefin having a crystallinity less than 60&#xb0; C., a silane crosslinker, a grafting initiator, a condensation catalyst, and a microencapsulated foaming agent.

Microdense seals, compositions, and methods of making the same

A static sealing member is provided that includes a composition having a silane-crosslinked polyolefin elastomer with a density less than 0.90 g/cm. The static sealing member can exhibit a compression set of from about 5.0% to about 35.0%, as measured according to ASTM D 395 (22 hrs @ 70&#xb0; C.). The silane-crosslinked polyolefin elastomer can include a first polyolefin having a density less than 0.86 g/cm, a second polyolefin having a crystallinity less than 40%, a silane crosslinker, a grafting initiator, and a condensation catalyst.

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Brignancourt, France

Roland Herd-Smith