388726

Polybutenes

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

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

Properties

• form: liquid
• Quality Level: 100
• mol wt: average M_n ~2,300 by VPO
• composition: isobutylene, >90%
• refractive index: n20/D 1.504
• viscosity: 4,000-4,400 cSt(99 °C)(lit.)
• transition temp: T_g −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

Description

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

Safety Information

• pictograms: GHS08,GHS07
• signalword: Danger
• hcodes: H304,H315
• pcodes: P264 - P280 - P301 + P310 - P302 + P352 - P331 - P332 + P313
• 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