Overview
HYBRAR™ is a triblock co-polymer with polystyrene end blocks and a vinyl bonded rich polydiene mid-block. HYBRAR™ exhibits high vibration damping and shock absorption properties. HYBRAR™ can be processed in a wide variety of forms, including films, tubes and injection molding.
Products made with HYBRAR™ don’t require a plasticizer, unlike those made with flexible PVC, which lessens the environmental impact across the entire supply chain. This highly flexible styrene block copolymer, HYBRAR™, can be formed into numerous shapes, such as films and tubes, and is suitable for injection molding.
Example
HYBRAR™ grades
Non-hydrogenated grades
| Grade | Type | Styrene content | Tg | MFR | Solution viscosity (Toluene solution 30ºC) | Physical form | Hardness (Type A) | |||
|---|---|---|---|---|---|---|---|---|---|---|
| 190°C, 2.16 kg (g/10 min) | 230°C, 2.16 kg (g/10 min) | 15wt% (mPa•s) | 20wt% (mPa•s) | 30wt% (mPa•s) | ||||||
| 5125 | Vinyl-bond rich SIS | 20 | -13 | 4 | - | - | 100 | 650 | Pellet | 60 |
| 5127 | Vinyl-bond rich SIS | 20 | 8 | 5 | - | - | - | 540 | Pellet | 84 |
HYBRAR™ is a proprietary block copolymer that consists of a polystyrene hard block and vinyl-polydiene soft block.
It exhibits high damping performance at room temperature because its glass transition temperature falls in this range.
Taking advantage of this damping performance, it is used in damping foam sealants and sports products. Other potential applications are electronic parts, building materials, household appliances, automotive parts, adhesives, coating agents and sealing materials.
Hydrogenated grades
| Grade | Type | Styrene content | Tg | MFR | Solution viscosity (Toluene solution 30ºC) | Physical form | Hardness (Type A) | |||
|---|---|---|---|---|---|---|---|---|---|---|
| 190°C, 2.16 kg (g/10 min) | 230°C, 2.16 kg (g/10 min) | 15wt% (mPa•s) | 20wt% (mPa•s) | 30wt% (mPa•s) | ||||||
| 7125F | Vinyl-bond rich SEPS | 20 | -15 | 0.7 | 4 | - | 55 | 350 | Pellet | 64 |
| 7311F | Vinyl-bond rich SEEPS | 12 | -32 | 0.5 | 2 | 90 | 240 | - | Pellet | 41 |
HYBRAR™ features hydrogenated grades (7000 series) and non-hydrogenated grades (5000 series). In particular, the hydrogenated grades provide excellent heat resistance and weather resistance. HYBRAR™ has good compatibility with polypropylene, and related blends offer excellent transparency with good flexibility.It is used in films, sheets, tubes, and other products as an environmentally friendly softener material without the need for a plasticizer, in contrast to soft PVC.
Further information about HYBRAR™
