Elf & Koch Materials

In the early 1990s, Elf Asphalt was operating as a polymer modified asphalt and emulsion company, while Koch Materials enjoyed success as the largest liquid asphalt company in the U.S. With the acquisition of Elf in 1993, Koch Materials now owned its first branded product, Stylink®, a polymer modified asphalt cement (PMAC) technology. This marked the company’s entrance into the market for high performace products. Over the next 12 years, Koch Materials acquired, licensed and developed nine additional branded technologies (NovaChip®, Ralumac® *, Recycle Plus®, ReFlex®, Restore®, Strata®, RoadArmor®, Encore® and Fortress®) and pioneered the concept of offering field services to support their use and application.

*A MWV technology

Koch Materials & SemMaterials

In June of 2005, Koch Materials was divested to SemGroup, L.P., a midstream service company to the energy industry. Operating as SemMaterials, L.P., the company maintained its status as one of the largest asphalt producers and marketers in the U.S. and Mexico. In three short years, SemMaterials:

• Adopted a consultative approach to building business relationships with customers.
• Increased the adoption of its technologies by focusing on contractor and manufacturer licensing.
• Constructed one of the world’s most advanced asphalt pavement technology laboratories in Tulsa, OK.
• Advanced technologies in the categories of ultrathin overlays, cold in-place and hot in-place recycling, microsurfacing, base stabilization, high performance chip seals, and fatigue resistant pavements.

SemMaterials & Road Science, LLC

Beginning in February of 2008, SemMaterials’ U.S. assets were sold over a 16 month period. In May of 2009, Rhone Midstream Holdings, LLC, a Chicago-based capital management firm, purchased the intellectual property of SemMaterials and began what is today Road Science, LLC.