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Sigma-Aldrich

Polybutenes

average Mn ~920 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:
24864243
NACRES:
NA.23

form

liquid

mol wt

average Mn ~920 by VPO

composition

isobutylene, >90%

viscosity

200-235 cSt(100 °C)(lit.)

transition temp

pour point (ASTM D 97) −7 °C

density

0.89 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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Takanori Tanino et al.
Applied microbiology and biotechnology, 82(1), 59-66 (2008-11-06)
A Candida antarctica lipase B (CALB)-displaying yeast whole-cell biocatalyst was constructed with the integration of the CALB cell-surface display expression cassette in the yeast genome and cell fusion by mating. Lipase hydrolytic activity of the yeast whole-cell biocatalyst subsequently increased
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Microfluidics has emerged as a valuable tool for the high-resolution patterning of biological probes on solid supports. Yet, its widespread adoption as a universal biological immobilization tool is still limited by several technical challenges, particularly for the patterning of isolated
Ibrahim Bulent Buttanri et al.
Ophthalmic plastic and reconstructive surgery, 29(2), 98-100 (2012-12-14)
To evaluate the effect of suturing the silicone rod to the tarsal plate and the suture material used in suturing on surgical success of frontalis suspension for congenital ptosis. Eighty eyes of 56 consecutive patients who underwent frontalis suspension surgery
Pieter Van Royen et al.
Rapid communications in mass spectrometry : RCM, 19(4), 552-560 (2005-01-25)
Static secondary ion mass spectrometry (S-SIMS) emerges as one of the most adequate methods for the surface characterisation of polymers with an information depth of essentially one monolayer. The continuing search for increased analytical sensitivity and specificity has led to
Sofia Malberg et al.
Biomacromolecules, 12(6), 2382-2388 (2011-05-03)
An innovative type of triblock copolymer that maintains and even increases the mechanical properties of poly(l-lactide) (PLLA) and poly(ε-caprolactone) (PCL) with a controlled, predictable, and rapid degradation profile has been synthesized. Elastic triblock copolymers were formed from the hydrophobic and
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