SIS YH-1209 is styrene - isoprene block copolymer in the form of white porous particle, with features of good thermo-plasticity, high elasticity, good melt fluidity, good compatibility with tackifying resin, safe and non-toxic. It delivers a tensile strength of 15 MPa and a Shore A hardness of 61, distinguishing it with a comparatively firm profile. It can be applied to the hot-melt pressure-sensitive adhesives, solvent cements, flexible printing plates, plastics and asphalt modification.
Product Name: Styrene Isoprene Styrene Block Copolymer (SIS)
Grade: SIS YH-1209
Structure: Linear
SIS YH-1209 Technical Data:
| Items | Index |
| Appearance | White Fluffy Particle |
| SM Content | 29 % |
| Volatile Matter | ≤ 0.7 wt% |
| SI Content | 0 |
| Tensile Strength | 15 Mpa |
| Hardness | 61 Shore A |
| Melt Flow Rate (200℃ ,5kg) | 10 g/10 min |
| Toluene Solution Viscosity (25 ℃, 25%) | 320 Mpa.s |
Applications:
Pressure Sensitive / Sanitary Adhesive: Features high styrene content and superior tensile strength, providing clean, high-bond formulations for hygiene products and technical adhesive tapes.
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.
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.
SIS YH-1105 is a linear styrene-isoprene-styrene block copolymer with a styrene content of 15% and an SI content of 0%. It features a tensile strength of 13 MPa and a Shore A hardness of 41, providing a balanced mechanical profile within the SIS product range. Its volatile matter content is controlled at ≤0.7 wt%, and it is supplied as white fluffy particles.
SIS YH-1106 is a linear SIS copolymer containing 16% styrene and 17% SI, with a tensile strength of 10 MPa and a Shore A hardness of 40. Its melt flow rate reaches 11 g/10 min under a test condition of 200°C/5 kg, while the toluene solution viscosity is 900 mPa·s at 25°C. These parameters distinguish YH-1106 through its combination of moderate hardness, defined tensile strength, and relatively high melt flow. The grade has a volatile matter content of ≤0.7 wt% and is available in white fluffy particle form.
SIS YH-1209 is styrene - isoprene block copolymer in the form of white porous particle, with features of good thermo-plasticity, high elasticity, good melt fluidity, good compatibility with tackifying resin, safe and non-toxic. It delivers a tensile strength of 15 MPa and a Shore A hardness of 61, distinguishing it with a comparatively firm profile. It can be applied to the hot-melt pressure-sensitive adhesives, solvent cements, flexible printing plates, plastics and asphalt modification.
SIS YH-1124 is a linear SIS grade with 14% styrene and 24% SI content. It has a tensile strength of 8 MPa and a Shore A hardness of 38, maintains dependable initial tack and clean slitting properties. YH-1124 is in the form of white Fluffy particle, with features of good thermo-plasticity, high elasticity, good melt fluidity, good compatibility with tackifying resin, safe and non-toxic.
SIS YH-1126 is a linear styrene-isoprene-styrene block copolymer characterized by a styrene content of 16% and an SI content of 50%. It has a tensile strength of 5 MPa and a Shore A hardness of 38, representing a relatively low-strength, soft grade. It has medium molecule weight and high diblock content, with good melt processability.
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