This styrene-isoprene-styrene (SIS) block copolymer system allows heat-resistant, photo-cured crosslinking, serving to eliminate the tradeoffs between hot-melt SIS systems and solvent-based SIS rubber systems. The crosslinkable SIS technology, or “x-linked SIS”, preserves the simple, low energy processibility, low VOC level, and general mechanical properties of SIS, while improving heat resistance.
Key Features and Benefits
- Peel and tack performance suitable for adhesive applications
- Heat resistant to 120-150° C (depending on level of photocuring), as demonstrated by the shear adhesion failure temperature test; typical SIS materials heat resistant only to 80-100° C
- Can be prepared via low energy, low viscosity hot-melt processing
- Quicker, more efficient processing and production for adhesive applications compared to solvent-based systems
- Low VOC level, particularly compared to solvent-based SIS rubber systems
- Estimated processing cost savings, despite 10-20% higher raw material cost
- 10-20% higher material cost compared to typical SIS
Technology Development Status
Zeon’s crosslinkable SIS materials are currently at the advanced product development stage. Zeon is seeking input from professionals in various markets on application requirements and fit.
ZEON CORPORATION is a $3.3B, 3,300-person chemical company focused on specialty elastomers, polymers, and specialty chemicals founded in 1950. The company produces a variety of products including high nitrile rubber that can be used in strong cements and adhesives, acrylonitrile butadiene copolymer latex, resins and other rubber additives.
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