POLY(VINYL BUTYRAL) Chemical Properties

Melting point:

150

Melting point:

170

Density 

1.083 g/mL at 25 °C (lit.)

Tg

51

refractive index 

n20/D 1.485

solubility 

alcohols, glycol ethers and dioxane: soluble

form 

powder

Dielectric constant

3.3 - 3.9（0.0℃）

EPA Substance Registry System

Acetic acid ethenyl ester, polymer with 1,1-bis(ethenyloxy)butane and ethenol (27360-07-2)

Safety Information

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36

WGK Germany 

3

RTECS 

TR4955000

TSCA 

TSCA listed

MSDS

• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS

POLY(VINYL BUTYRAL) Usage And Synthesis

Uses

Ceramic binder, dry toners, wood coatings, composite fiber binders, structural adhesives and interlayer in safety glass.

Preparation

Poly(vinyl butyral) may be prepared by dissolving poly(vinyl alcohol) (PVA) in a mixture of water and methanol and adding butyraldehyde and a small amount of sulfuric acid as a condensation agent and heating to 60°-70°C. The best quality poly(vinyl butyral) is stabilized by slurrying in alkali in order to prevent viscosity changes and discolorization. Urea is also used to stabilize the pH to about 1.5.
Some processes involve saponifying poly(vinyl acetate) (PVAc) to PVA with aqueous hydrochloric acid; butyraldehyde is then added directly. The resulting poly(vinyl butyral) solution is neutralized and the product precipitated with water, washed, and dried.

Solubility in organics

Acetone, butanol, ethanol, isopropanol, MEK, THF

POLY(VINYL BUTYRAL)(27360-07-2)Related Product Information

• Cupric acetylacetonate
• N-BUTYLISOCYANIDE
• 2,4-PENTANEDIONE, SILVER DERIVATIVE
• TRIS(2,2,6,6-TETRAMETHYL-3,5-HEPTANEDIONATO)EUROPIUM(III)
• 1,1,3,3-TETRAMETHYLBUTYL ISOCYANIDE
• DICHLORO(ETHYLENEDIAMINE)PLATINUM(II)
• Tosylmethyl isocyanide
• TRIS(2,2,6,6-TETRAMETHYL-3,5-HEPTANEDIONATO)DYSPROSIUM(III)
• PHENYLSELENOL
• Aluminum acetylacetonate
• TERT-BUTYL ISOCYANIDE
• METHYL ISOCYANOACETATE
• COBALT(II) ACETYLACETONATE
• Tris(2,4-pentanedionato)chroMiuM(III)
• SALCOMINE
• Ferric acetylacetonate
• Benzyl isocyanide
• Polyethylene