SIS (Styrene-Isoprene-Styrene Block Copolymer) typically features a linear, radial (star), or mixed molecular structure. The radial structure often exhibits superior adhesive performance due to its more regular morphology. Combining the processing characteristics of thermoplastics with the elasticity of vulcanized rubber, SIS is widely used in hot melt pressure-sensitive adhesives (HMPSA), sealants, and modified bitumen for roofing waterproofing membranes.
Features:
Styrene Isoprene Styrene Block Copolymer (SIS) Product Summary:
| Grades | YH-1105 | YH-1106 | YH-1209 | YH-1124 | YH-1126 | YH-4019 | YH-1125 | YH-1128 |
| Structure | Linear | Linear | Linear | Linear | Linear | Radial | Radial | Linear |
| SM Content (%) | 15 | 16 | 29 | 14 | 16 | 19 | 25 | 15 |
| Volatile Matter (wt %) | ≤ 0.7 | ≤ 0.7 | ≤ 0.7 | ≤ 0.7 | ≤ 0.7 | ≤ 0.7 | ≤ 0.7 | ≤ 0.7 |
| SI Content (%) | 0 | 17 | 0 | 24 | 50 | 30 | 25 | 38 |
| Tensile Strength (Mpa) | 13 | 10 | 15 | 8 | 5 | 12 | 10 | 12 |
| Hardness (Shore A) | 41 | 40 | 61 | 38 | 38 | 45 | 54 | 38 |
|
Melt Flow Rate (200℃ ,5kg) (g/10 min) |
10 | 11 | 10 | 10 | 11 | 10 | 9 | 23 |
|
Toluene Solution Viscosity (25 ℃, 25%) (Mpa.s) |
1250 | 900 | 320 | 1200 | 900 | 350 | 500 | 600 |
| Form | White Fluffy Particle | |||||||
| Notes | FDA177.1810,FDA177.2600,Regulation (EC) No 1935/2004 | |||||||
| Applications | ||||||||
| Pressure Sensitive Adhesive | • | • | • | • | • | • | • | • |
| Label Adhesive | • | • | • | • | ||||
| Sanitary Adhesive | • | • | • | |||||
| Waterproof Membrane | • | |||||||
| Grades | YH-1125H | YH-1108 | YH-4016 | YH-4015 | YH-1716 | YH-1716L | YH-4203 |
| Structure | Linear | Linear | Radial | Hybrid | Linear | Linear | Linear |
| SM Content (%) | 30 | 16 | 18 | 15 | 17 | 16 | 23 |
| Volatile Matter (wt %) | ≤ 0.7 | ≤ 0.7 | ≤ 0.7 | ≤ 0.7 | ≤ 0.7 | ≤ 0.7 | ≤ 0.7 |
| SI Content (%) | 25 | 20 | 75 | 15 | 62 | 66 | 20 |
| Tensile Strength (Mpa) | 13 | 10 | 3 | 10 | 2.8 | 2.3 | 12 |
| Hardness (Shore A) | 60 | 40 | 40 | 38 | 35 | 30 | 52 |
|
Melt Flow Rate (200℃ ,5kg) (g/10 min) |
12 | 13 | 23 | 10 | 5 | 7 | 2 |
|
Toluene Solution Viscosity (25 ℃,25%) (Mpa.s) |
250 | 850 | 500 | 1300 | 1200 | 1250 | 900 |
| Form | White Fluffy Particle | ||||||
| Notes | FDA177.1810,FDA177.2600,Regulation (EC) No 1935/2004 | ||||||
| Applications | |||||||
| Pressure Sensitive Adhesive | • | • | • | • | • | • | • |
| Label Adhesive | • | ||||||
| Sanitary Adhesive | • | • | |||||
| Flexographic Printing | • | ||||||
| Waterproof Membrane | • | • | • | ||||
Package:
20kg PE bag 520/740kg super bag.
Storage:
Store at room temperature (below 30°C), away from direct sunlight and UV radiation to prevent oxidative degradation of the isoprene middle block. The standard shelf life is 12 months from the date of manufacture.