Application And Trial Discussion
Direct answer:SBS 4402 is a high-styrene, star-structure SBS discussion direction for projects that need stronger modification behavior than general-purpose SBS grades, especially in waterproofing, modification materials, and selected specialty industrial trials.
Waterproofing systems
Modification materials
Specialty industrial applications
Used for projects that need a more demanding modification or specialty industrial SBS direction.
Typical Reference Data
| Data Item | Typical Value |
|---|---|
| Styrene Content | 40 wt.% |
| Melt Flow Rate | Non-flowing |
| Toluene Solution Viscosity | – |
| Tensile Strength | 22 MPa |
| Elongation at Break | 550 % |
| Hardness | 88 Shore A |
Selection Factors To Confirm
| Review Area | What To Confirm Before Choosing SBS 4402 |
|---|---|
| Modification target | Confirm whether the project needs waterproofing modification, bitumen compatibility, or another specialty industrial modification route. |
| Processing window | Review mixing conditions, temperature profile, dispersion behavior, and process limitations before scale-up. |
| Performance priority | Compare tensile strength, elongation, hardness, low-temperature behavior, and aging expectations against the finished product target. |
| Alternative grades | Compare SBS 1301L, SBS 1301H, SBS 1401, or SBS 4303 when a softer, easier-flowing, or lower-styrene direction may fit better. |
Buyer Checklist
Share the finished product type, base material, process route, and performance priority.
Prepare current formulation or benchmark grade information so alternatives can be compared efficiently.
Confirm whether the discussion needs a grade comparison, sample direction, or technical document first.
Record trial feedback using consistent tensile, elongation, heat aging, flexibility, or compatibility test methods.
SBS 4402 FAQ
Is SBS 4402 a general-purpose SBS grade?
No. SBS 4402 is better treated as a more demanding modification direction. Buyers should compare it with lower-styrene or easier-processing SBS grades when the project does not require this level of modification behavior.
Can SBS 4402 be selected by styrene content only?
No. Styrene content is only one screening point. The finished formulation, process window, compatibility, hardness target, and end-use validation all need review.
When should buyers discuss alternatives?
Discuss alternatives when the process needs better flow, the finished product needs softer behavior, or the waterproofing/modification target can be met with a different SBS structure.