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POLY(VINYL FORMAL)

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POLY(VINYL FORMAL) Basic information

Product Name:
POLY(VINYL FORMAL)
Synonyms:
  • polyvinylformalstaplefiber
  • Vinylacetate,polymerwithformaldehyde
  • FORMVAR RESIN
  • FORMVAR 15/95
  • FORMVAR 15/95 RESIN
  • FORMVAR 15/95 (POLY[VINYL FORMAL]), 0.5% SOLN. IN ETHYLENE DICHLORIDE
  • vinyl formal homopolymer
  • PVF;PVFO
CAS:
9003-33-2
MF:
C5H8O2
MW:
100.11582
Product Categories:
  • Hydrophobic Polymers
  • Polymer Science
  • Polymers
  • Vinyl Acetals
  • Hydrophobic Polymers
  • Materials Science
  • Polymer Science
  • Vinyl Acetals
Mol File:
9003-33-2.mol
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POLY(VINYL FORMAL) Chemical Properties

Melting point:
85-120 °C
Density 
1.23 g/mL at 25 °C (lit.)
refractive index 
n20/D 1.502
solubility 
Soluble in acetone, chloroform, dioxane, THF
form 
powder
Specific Gravity
1.23
EPA Substance Registry System
Ethene, 1,1'-[methylenebis(oxy)]bis-, homopolymer (9003-33-2)
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Safety Information

WGK Germany 
3
TSCA 
Yes

MSDS

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POLY(VINYL FORMAL) Usage And Synthesis

Uses

It is used in the anomalous sorption and pervaporation of aqueous organic mixtures by poly(vinyl acetal) membranes. Poly(vinyl formal) is mainly used in three general applications wire coatings, surface coatings and adhesives. The first and extensive application of poly(vinyl formal) is in the manufacture of a tough, adhesive and heat resistant wire enamel.

Preparation

Poly(vinyl formal) was developed by General Electric as a wire coating and the early process involved direct reaction of a mixture of poly(vinyl acetate), glacial acetic acid, formalin and concentrated sulfuric acid at 70°C. After the desired degree of polymerization is obtained, ammonium hydroxide is added to bring the pH to about 9-10. The reaction mixture is poured into water to precipitate the poly(vinyl formal). Poly(vinyl formais) have also been used as fibers.

POLY(VINYL FORMAL)Supplier

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