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Qingdao Hexas Chemical Co., Ltd.
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Thermoplastic Elastomer SIS HEXAS EL-9220D

short description:

General Properties and Applications

EL9220D is a clear linear of branched co-polymer and liner triblock copolymer based on styrene and isoprene, with a polystyrene content of 25% and dense pellet shape. EL9220 is used as an ingredient in formulating adhesives, sealants and coatings. It also could be used as a modifier of bitumen and plastic.


Product Detail

Product Introduction

In the production of SBS and SIS, styrene and either butadiene or isoprene are polymerized (their single-unit molecules linked together to form long, chainlike, multiple-unit molecules) under the action of anionic initiators. Various polymerization procedures are followed, including building up a styrene chain, adding on butadiene or isoprene units to form a diblock copolymer, and then linking two diblock chains to form the triblock copolymer. In the final solidified product the polystyrene end-blocks of adjacent chains collect together in small domains, so that clusters of hard, thermoplastic polystyrene are distributed through a network of rubbery polybutadiene or polyisoprene.

Application

Pressure sensitive adhesives, Sealants, Road marking paint, Bitumen modification , Waterproof membrane adhesive,Hygiene adhesive.

Specifications

Test Items Unit Sales Specification range
Polystyrene content wt% 23 to 27
Di-block Content Di-block Content 23 to 27
Melt Flow rate g/10min 8.5 to 13.5
Tensile Strength Mpa ≥5.0
Elongation at Break % ≥750
Solution Vicosity mPa.s ≤1200
Volatile Matter Wt% ≤0.7
Ash Wt% ≤0.7

Typical Value

Test Items Unit Sales Specification range
Polystyrene content wt% 24
Di-block Content Di-block Content 26.82
Melt Flow rate g/10min 10
Tensile Strength Mpa 10
Elongation at Break % 1000
Solution Vicosity mPa.s 465
Volatile Matter Wt% 0.5
Ash Wt% 0.2
Mn(SIS) - 84000
Mn(SI) - 38000

Regulatory/Classifications

CAS No. 25038-32-8

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Brand Recommendation

Label

Label

EL9126, EL9270, EL9270D, EL9470, EL9220, EL9220D, EL9370


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