US Patent 7402619 Cross-linking compositions for polymer-modified asphalt compositions

Patent 7402619 was granted and assigned to Kraton (polymer) on July, 2008 by the United States Patent and Trademark Office.

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Patent

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Current Assignee

Kraton (polymer)

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

74026190

Patent Inventor Names

Keith E. Stephens0

Date of Patent

July 22, 2008

Patent Application Number

110953680

Date Filed

March 31, 2005

Patent Primary Examiner

‌

Peter Szekely

Patent abstract

The present invention relates to a bituminous composition comprising a bituminous component, an elastomeric polymer component, and a specific cross-linking composition component comprising elemental sulfur, a sulfur-containing derivative, a sulfur activator, a fatty acid or fatty acid derivative and a polymeric carrier. Compositions according to the invention are particularly useful in preparing polymer-modified asphalt (“PMA”) for road applications.

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