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Kraton Polymers' Innovation Reaches New Heights

Published on 2009-05-04. Author : SpecialChem

HOUSTON -- Kraton Polymers LLC (Kraton), a leading global producer of engineered polymers announces an innovation with proven ability to double styrene-butadienestyrene (SBS) modification levels in pre-modified asphalt emulsions. These new high polymer content (HPC) emulsions are a result of Kraton Polymers utilizing its latest development in high vinyl products. The effects of the enhanced mechanical properties can enable a transformation of traditional modified asphalt emulsion applications as well as open the door to new opportunities.

The modification levels in atmospheric emulsification systems historically have been limited to three to four weight percent of SBS polymer based on asphalt. Higher percentages can result in increased average and broad particle size distribution leading to insufficient emulsion stability and viscosity or inadequate drying and curing behavior. The pressurized emulsification systems have the capacity to increase the level to five or six weight percent.

Kraton Polymers' innovation allows for low pre-modified asphalt viscosity and emulsions to be created with polymer contents up to eleven weight percent in atmospheric emulsification systems. The polymer content can be substantially higher in pressurized emulsification systems. The performance advantages can be tuned through selection from Kraton Polymers' portfolio of high vinyl polymer grades. The potential applications for the HPC emulsions also include:
  • Surface dressing/Chip Seals
  • Micro surfacing
  • Slurry Seals
  • Stress-absorbing membrane interlayer (SAMI)
  • Tack coat / Trackless tack coat
  • Fog seal
  • Cold-applied crack or joint sealant
  • Pre-modified SBS emulsions for warm mix

The new high polymer content can also be applied in asphalt emulsion-based waterproofing applications; modified roofing membrane base sheets, bridge deck seals and standard or below-grade residential and commercial waterproofing membranes. They can be formulated as temporary, permanent as well as spray-applied systems. In addition, the benefits of HPC emulsions can be achieved in several other industrial applications such as pipe and metal coatings. Kraton Polymers is the world's leading supplier of SBS block copolymers for asphalt modification and continues to be the gold standard in the asphalt industry. For decades, its SBS grades have been widely used in pre-modified asphalt emulsions. Kraton Polymers will continue its long tradition of pushing innovation to new heights and providing solutions to its customers in the asphalt emulsion industry.

About Kraton Polymers

Kraton is a leading global producer of engineered polymers and, we believe, the world's largest producer of styrenic block copolymers (SBCs), a family of products whose chemistry was pioneered by us over forty years ago. SBCs are highly-engineered thermoplastic elastomers, which enhance the performance of numerous products by delivering a variety of attributes, including greater flexibility, resilience, strength, durability and processability. Kraton polymers are used in a wide range of applications including adhesives, coatings, consumer and personal care products, sealants, lubricants, medical, packaging, automotive, paving, roofing, and footwear products. Kraton has the leading position in nearly all of its core markets and is the only producer of SBCs with global manufacturing capability. Its production facilities are located in the United States, Germany, France, The Netherlands, Brazil and Japan.

Kraton, the Kraton logo and design, and the "Giving Innovators their Edge" tagline are trademarks of Kraton Polymers LLC.

Forward Looking Statements

This press release includes "forward-looking statements" which are statements other than statements of historical fact and are often characterized by the use of words such as "believes," "expects," "estimates," "projects," "may," "will," "intends," "plans" or "anticipates," or by discussions of strategy, plans or intentions. All forward-looking statements in this press release are made based on management's current expectations and estimates, which involve risks, uncertainties and other factors that could cause results to differ materially from those expressed in forward-looking statements. Readers are cautioned not to place undue reliance on forward-looking statements. We assume no obligation to update such information.

Source: Kraton Polymers LLC

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