8101 SIS-Thermoplastic Elastomer It is a clear, linear triblock copolymer based on styrene and isoprene, with a polystyrene content of 16%. #8101 is used as an ingredient in formulating adhesives, sealants and coatings. Also used as a modifier of bitumen and polymers.
(SIS Rubber:  Styrene-Isoprene-Styrene Rubber)
Product quality indexes Typical Value:
Items Unit Sales specification range Items Unit Value
Polystyrene Content Wt% 14  to 18 Polystyrene Content Wt% 16.4
Diblock Content Wt% 14.5  to 18.5 Diblock Content Wt% 17
Melt Flow Rate (200°C/5kg) g/10min 8  to 14 Melt Flow Rate
g/10min 10.2
Color YI ≤6.0 Hardness Shore A 1
Tensile Strength MPa ≥10 Tensile Strength MPa 19.2
Elongation at Break % ≥1050 Elongation at Break % 1192
Volatile Matter Wt% ≤0.7 Volatile Matter Wt% 0.38
Ash Wt% ≤0.20 Ash Wt% 0.07
Solution Viscosity mPa·s 1135
a)  Adhesives
b)  Pressure sensitive adhesives
c)  Sealants
d)  Coatings
e)  Modifiers of bitumen and polymers
Hardness Shore A 34
Mn (SIS) g/mol 115,000
Mn (SI) g/mol 71,000
Pd 1.01
Pelletized forms of resins may block or lump in hot weather climates or if stored near heat sources. Inside storage is recommended and keep at temperature not exceeding 30℃.The useful life of this product can be affected by storage and handling conditions. When stored in the original unopened container in an enclosed area and protected from moisture, extreme temperatures and contamination, the shelf life of this product is estimated to continue to meet applicable sales specifications for 12 months from the date of manufacture. Shelf Life is a guide not an absolute value. The product should be reanalyzed for critical properties at the end of its shelf life to see if it meets specification for use
USA – Food and Drug Administration (FDA)
When used unmodified for food contact applications the styrene-isoprene block copolymer.
product(s) listed in the table above will comply with the U.S. Food, Drug, and Cosmetic Act with the following:
21 CFR 175.105    Adhesives
21 CFR 177.2600 Rubber articles intended for repeated use.
21 CFR 175.125    Pressure sensitive adhesives.
21 CFR 175.300    Resinous and polymeric coatings
21 CFR 176.170    Components of paper
21 CFR 176.180    Components of paper and paperboard in contact with dry food
21 CFR 175.320:   Resinous and Polymeric Coating for Polyolefin Films
21 CFR 177.1210  Closures with Sealing Gaskets for Food Containers.
Other regulatory information is available on request.
Product Safety
Read and understand the Material Safety Data Sheet before using #8101