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Merck
CN

432407

Polystyrene-block-polyisoprene-block-polystyrene

styrene 17 wt. %

Synonym(s):

Polystyrene-block-polyisoprene, multi-arm

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About This Item

Linear Formula:
[CH2CH(C6H5)]X[CH2CH=C(CH3)CH2]Y[CH2CH(C6H5)]z
CAS Number:
25038-32-8
NACRES:
NA.23
PubChem Substance ID:
24867086
UNSPSC Code:
12162002
MDL number:
MFCD00217755

Key Documents

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Product Name

Polystyrene-block-polyisoprene-block-polystyrene, styrene 17 wt. %

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

SMILES string

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

InChI key

ROGIWVXWXZRRMZ-UHFFFAOYSA-N

form

beads

melt index

106 g/10 min (200°C/5.0kg)

mol wt

Mn 1,900

contains

phenolic as antioxidant

composition

styrene, 17 wt. %

hardness

32 (Shore A)

viscosity

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)

Quality Level

100

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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.

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
MKCT3997
MKCQ1031
MKCC4902
MKCC8527
06009LD

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Joseph D Sandt et al.
Advanced healthcare materials, 7(15), e1800293-e1800293 (2018-05-29)
Medical textiles are widely used to exert pressure on human tissues during treatment of post-surgical hematoma, burn-related wounds, chronic venous ulceration, and other maladies. However, the inability to dynamically sense and adjust the applied pressure often leads to suboptimal pressure

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