BECmaterials – SIS styrene isoprene styrene rubber polymer 1209

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SIS(styrene isoprene styrene)1209,  SIS rubber 1209, SIS polymer 1209


Thermoplastic elastomer SIS polymer 1209 is polystyrene-polyisoprene-polystyrene triblock copolymer with styrene content of 29%. The high content of styrene provides it with higher cohesive strength, low viscosity, outstanding holding power, and excellent heat-resistance.



Adhesive /Sanitary products



Structure: L

Styrene Content  (%) : 29

Diblock Content  (%):  <1

Solution Viscosity  (25%,25℃,mPa.s):  ≤1600

MFI  (g/10min):  6-15

Shore A  (/) : ≥60

Tensile Strength  (Mpa) : ≥11

Elongation  (%) : ≥800



HMPSA (Parts by mass)

SIS(YH1209): 10 – 15

SBS: 10 – 15

Softeners: 10 – 15

Tackifier: 50 – 60

Antioxidants: 1



Taipol 4211

Vector 4211

Kraton 1164P





About US

BEC Materials  is a leading global technology service company in thermoplastic elastomers(TPE) and hydrogenated hydrocarbon resins headquartered in Nanjing, China.


We have been proudly serving over 4000 global partners including Kraiburg, Henkel, Bostik, H.B. Fuller etc for the adhesive/compounding/asphalt modification and many other industries for the past two decades, with annual sales surging to USD $200,000,000 and 60,000 metric tons.

Our technical-focused service team provides one-stop integrated solutions from grade identification, formula design, manufacturing assistance, and quality assurance.  Targeting customers’  specific requirement, our research lab provides customized product with highest quality and most competing price.


We hope to be your reliable partner in the future.


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