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Sigma-Aldrich

Polystyrene-block-polyisoprene-block-polystyrene

styrene 14 wt. %

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Synonym(s):
Polystyrene-block-polyisoprene, multi-arm
Linear Formula:
[CH2CH(C6H5)]X[CH2CH=C(CH3)CH2]Y[CH2CH(C6H5)]z
CAS Number:
25038-32-8
MDL number:
MFCD00217755
UNSPSC Code:
12162002
PubChem Substance ID:
24867085
NACRES:
NA.23

form

beads

Quality Level

100

melt index

11 g/10 min (200°C/5.0kg)

contains

phenolic as antioxidant

composition

styrene, 14 wt. %

hardness

37 (Shore A)

viscosity

14.5 poise, 25 wt. % in toluene(25 °C, Brookfield)(lit.)

solubility

solvents with solubility parameters between 7.7 and 9.4: soluble

density

0.92 g/mL at 25 °C

elongation

ASTM D 412 - 1,300% (ultimate)

SMILES string

CC(=C)C=C.C=Cc1ccccc1

InChI

1S/C8H8.C5H8/c1-2-8-6-4-3-5-7-8;1-4-5(2)3/h2-7H,1H2;4H,1-2H2,3H3

InChI key

ROGIWVXWXZRRMZ-UHFFFAOYSA-N

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Application

Component of hot melt adhesives, sealants, asphalt and oil gels. Modifier for polymers, thermosets and general rubber compounding. Direct molded or extruded auto parts, sporting goods, footware and film.

Features and Benefits

High strength and low viscosity for easy melt and solution processing. High temperature degradation results in cross-linking. Flexible to -65°C. Excellent electrical insulator, resists acids and alkali.

Physical form

Thermoplastic elastomer.

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

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