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Merck
CN

388726

Polybutenes

average Mn ~2,300 by VPO, isobutylene >90 %

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About This Item

Linear Formula:
[-CH2C(CH3)2-]x[-CH2CH(C2H5)-]y
CAS Number:
9003-29-6
NACRES:
NA.23
PubChem Substance ID:
24864245
UNSPSC Code:
12162002
MDL number:
MFCD00197897

Key Documents

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Product Name

Polybutenes, average Mn ~2,300 by VPO, isobutylene >90 %

InChI

1S/2C4H8/c2*1-3-4-2/h3-4H,1-2H3;3H,1,4H2,2H3/b4-3+;

SMILES string

CCC=C.C\C=C\C

InChI key

WTOOLIQYCQJDBG-BJILWQEISA-N

form

liquid

mol wt

average Mn ~2,300 by VPO

composition

isobutylene, >90%

refractive index

n20/D 1.504

viscosity

4,000-4,400 cSt(99 °C)(lit.)

transition temp

Tg −64.9 °C
pour point (ASTM D 97) +18 °C

density

0.908 g/mL at 25 °C

Quality Level

100

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Application

Hydrophobic material is derivatized to make detergents and anti-rust additives. Adds tack, flexibility and water repellency to adhesives and coatings. Contributes ′cling′ to LLDPE films. Plasticizer for polymers, lubricants and metal-working fluids.

Features and Benefits

Tackiness increases with molecular weight. Some internal double bonds may be present.

Other Notes

remainder 1- and 2-butenes

Physical form

Terminal vinyl group.

pictograms

Health hazardExclamation mark
GHS08,GHS07

signalword

Danger

hcodes

H304,H315

Hazard Classifications

Asp. Tox. 1 - Skin Irrit. 2

Storage Class

10 - Combustible liquids

wgk

WGK 1

flash_point_f

159.8 °F - closed cup

flash_point_c

71 °C - closed cup

ppe

Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
MKCZ8117
MKCR1499
MKBV0908V
MKBR5256V
MKBN5459V

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Colin Booth et al.
Physical chemistry chemical physics : PCCP, 8(31), 3612-3622 (2006-08-03)
The article deals with the association behaviour in dilute aqueous solution of block copoly(oxyalkylene)s in which hydrophilic poly(ethylene oxide) is combined with hydrophobic poly(propylene oxide), poly(1,2-butylene oxide) or poly(styrene oxide). Polymers with three simple architectures are considered, i.e. copolymers of
Lin Jia et al.
Macromolecular bioscience, 5(6), 526-538 (2005-06-11)
In situ self-assemblies of new biodegradable triblock PLLA-b-PBS-b-PLLA and PDLA-b-PBS-b-PDLA have been investigated in acetonitrile solution. At first, two series of PLLA-b-PBS-b-PLLA and PDLA-b-PBS-b-PDLA, respectively denoted as the P and Q triblock copolyester series, were prepared with fixed PBS block
Huaiyu Wang et al.
Acta biomaterialia, 5(1), 279-287 (2008-09-02)
Poly(butylene succinate) (PBSu), a novel biodegradable aliphatic polyester with excellent processability and mechanical properties, is a promising substance for bone and cartilage repair. However, it typically suffers from insufficient biocompatibility and bioactivity after implantation into the human body. In this
Syutaro Yamamoto et al.
Journal of oleo science, 56(9), 463-469 (2007-09-28)
Water-soluble metal working fluids are used for processing of aluminum alloy materials. This short article describes properties of new additives in water-soluble metal working fluids for aluminum alloy materials. Many half esters or diesters were prepared from the reactions of
X Y Wu et al.
The British journal of ophthalmology, 82(5), 569-576 (1998-08-26)
The goal was to compare the biological response of the corneal stroma with three porous materials: a melt blown microfibre web of polybutylene:polypropylene (80:20); a polyester spun laced fabric (polyethylene terephthalate), and an expanded polytetrafluoroethylene. Fifty per cent of each
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