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388726

Sigma-Aldrich

Polybutenes

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

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About This Item

Formule linéaire :
[-CH2C(CH3)2-]x[-CH2CH(C2H5)-]y
Numéro CAS:
9003-29-6
Numéro MDL:
MFCD00197897
Code UNSPSC :
12162002
ID de substance PubChem :
24864245
Nomenclature NACRES :
NA.23

Forme

liquid

Poids mol.

average Mn ~2,300 by VPO

Composition

isobutylene, >90%

Indice de réfraction

n20/D 1.504

Viscosité

4,000-4,400 cSt(99 °C)(lit.)

Température de transition

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

Densité

0.908 g/mL at 25 °C

Chaîne SMILES 

CCC=C.C\C=C\C

InChI

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

Clé InChI

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.

Caractéristiques et avantages

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

Forme physique

Terminal vinyl group.

Autres remarques

remainder 1- and 2-butenes

Pictogrammes

Health hazardExclamation mark
GHS08,GHS07

Mention d'avertissement

Danger

Mentions de danger

H304,H315

Classification des risques

Asp. Tox. 1 - Skin Irrit. 2

Code de la classe de stockage

10 - Combustible liquids

Classe de danger pour l'eau (WGK)

WGK 1

Point d'éclair (°F)

159.8 °F - closed cup

Point d'éclair (°C)

71 °C - closed cup

Équipement de protection individuelle

Eyeshields, Gloves

Certificats d'analyse (COA)

Recherchez un Certificats d'analyse (COA) en saisissant le numéro de lot du produit. Les numéros de lot figurent sur l'étiquette du produit après les mots "Lot" ou "Batch".

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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
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A purified lipase from the yeast Cryptococcus sp. strain S-2 exhibited remote homology to proteins belonging to the cutinase family rather than to lipases. This enzyme could effectively degrade the high-molecular-weight compound polylactic acid, as well as other biodegradable plastics
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Poly(ethylene oxide)-block-poly(styrene oxide) (PEO-b-PSO) and PEO-b-poly(butylene oxide) (PEO-b-PBO) of different chain lengths were synthesized and characterized for their self-assembling properties in water by dynamic/static light scattering, spectrofluorimetry, and transmission electron microscopy. The resulting polymeric micelles were evaluated for their ability
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Journal of colloid and interface science, 325(2), 309-315 (2008-07-01)
Adsorption studies by optical reflectometry show that complex coacervate core micelles (C3Ms) composed of poly([4-(2-amino-ethylthio)-butylene] hydrochloride)(49)-block-poly(ethylene oxide)(212) and poly([4-(2-carboxy-ethylthio)-butylene] sodium salt)(47)-block-poly(ethylene oxide)(212) adsorb in equal amounts to both silica and cross-linked 1,2-polybutadiene (PB). The C3Ms have an almost glass-like core
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