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388645

Sigma-Aldrich

Polybutenes

average Mn ~460 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:
329755796

mol wt

average Mn ~460 by VPO

composition

isobutylene, >90%

viscosity

210-227 cSt(38 °C)(lit.)

transition temp

Tg −69.6 °C
pour point (ASTM D 97) −35 °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

Certificados de análisis (COA)

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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
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
M Risbud et al.
Biomaterials, 22(12), 1591-1597 (2001-05-26)
The aim of the study was to prepare composites of poly(butylene terepthalate)/wollastonite (PBT/W), evaluate their properties and in vitro biocompatibility. Composites of PBT with wollastonite in two different proportions, viz. 70/30 (PW-30), 50/50 (PW-50) were prepared. The DSC studies indicate
Daniel Brassard et al.
Lab on a chip, 11(23), 4099-4107 (2011-11-02)
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
A M Belu et al.
Rapid communications in mass spectrometry : RCM, 14(7), 564-571 (2000-04-25)
A series of 16 polyarylates, with well-controlled and systematically varying chemistry, has been characterized by time-of-flight secondary ion mass spectrometry (TOF-SIMS). The polymers are structurally identical except for the incremental additions of C2H4 units to the backbone and sidechain. From
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