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Merck
CN

432431

Polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene-graft-maleic anhydride

melt index ~21 g/10 min (230°C/5.0kg)

Synonym(s):

maleated copolymer, maleated polymer, maleic copolymer

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About This Item

CAS Number:
124578-11-6
UNSPSC Code:
12162002
PubChem Substance ID:
24867088
NACRES:
NA.23
MDL number:
MFCD00241501

Key Documents

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Product Name

Polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene-graft-maleic anhydride, melt index ~21 g/10 min (230°C/5.0kg)

Quality Level

200

InChI key

WBWITWZSMYQPNN-UHFFFAOYSA-N

SMILES string

C=C.C=CC=C.O=C1OC(=O)C=C1.C=Cc2ccccc2

form

pellets

melt index

~21 g/10 min (230°C/5.0kg)

composition

maleic anhydride, ~2 wt. %

hardness

75 (Shore A)

viscosity

12.5 poise, 15 wt. % in toluene(25 °C, Brookfield)(lit.)

solubility

solvents with solubility parameters between 7.7 and 9.4: soluble

density

0.91 g/mL at 25 °C (lit.)

elongation

ASTM D 412 - 500% (ultimate)

Related Categories

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

Maleic anhydride is grafted on the mid-block to increase compatibility with polar coatings and increase interaction with substrates. More oxidatively stable than unsaturated precursor. Flexible to -80°C.

Physical form

Thermoplastic elastomer.

pictograms

Exclamation mark
GHS07

signalword

Warning

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Eye Irrit. 2 - Skin Irrit. 2 - Skin Sens. 1 - STOT SE 3

target_organs

Respiratory system

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Faceshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
MKCZ5477
MKCX8226
MKCW2297
MKCX0010
MKCT0267

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Ramon Tejada-Oliveros et al.
Molecules (Basel, Switzerland), 26(1) (2021-01-21)
This research work reports the potential of maleinized linseed oil (MLO) as biobased compatibilizer in polylactide (PLA) and a thermoplastic elastomer, namely, polystyrene-b-(ethylene-ran-butylene)-b-styrene (SEBS) blends (PLA/SEBS), with improved impact strength for the packaging industry. The effects of MLO are compared

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