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388726

Sigma-Aldrich

Polybutenes

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

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About This Item

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

form

liquid

Quality Level

100

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

SMILES string

CCC=C.C\C=C\C

InChI

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

InChI key

WTOOLIQYCQJDBG-BJILWQEISA-N

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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.

Physical form

Terminal vinyl group.

Other Notes

remainder 1- and 2-butenes

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_germany

WGK 1

flash_point_f

159.8 °F - closed cup

flash_point_c

71 °C - closed cup

ppe

Eyeshields, Gloves

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Certificados de análisis (COA)

Lot/Batch Number
MKCR1499
MKBV0908V
MKBR5256V
MKBN5459V
MKBH7405V

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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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