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POLY(VINYL FORMAL)

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POLY(VINYL FORMAL) Suppliers list
Company Name: Monomer Polymer & Dajac Labs  
Tel: 215-364-1155
Email: info@monomerpolymer.com
Products Intro: Product Name:Vinyl Formal Polymer
CAS:26876-25-5
Company Name: Beijing Hengye Zhongyuan Chemical Co., Ltd  
Tel: 010-85895316 85895316 85890267
Email: 13552281129@163.com
Products Intro:
POLY(VINYL FORMAL) Basic information
Product Name:POLY(VINYL FORMAL)
Synonyms:formaldehyde,polymerwithethenol;FORMVAR 15/95;FORMVAR 15/95 RESIN;FORMVAR RESIN;VINYLEC K;VINYL FORMAL POLYMER;POLY(VINYL FORMAL);PVFM
CAS:26876-25-5
MF:C3H6O2
MW:74.07854
EINECS:
Product Categories:
Mol File:26876-25-5.mol
POLY(VINYL FORMAL) Structure
POLY(VINYL FORMAL) Chemical Properties
density 1.23 g/mL at 25 °C(lit.)
refractive index n20/D 1.502
form powder
EPA Substance Registry SystemFormaldehyde, polymer with ethenol (26876-25-5)
Safety Information
WGK Germany 3
MSDS Information
ProviderLanguage
SigmaAldrich English
ALFA English
POLY(VINYL FORMAL) Usage And Synthesis
PreparationPoly(vinyl formal) is generally prepared directly from poly(vinyl acetate) without isolation ofthe intermediate poly(vinyl alcohol). In a typical process, poly(vinyl acetate) is dissolved in acetic acid and then formalin and a small quantity of sulphuric acid (catalyst) are added. The mixture is heated at 70°C for 24 hours. Water is then added to the product with rapid agitation and the poly(vinyl formal) is precipitated as granules, which are washed with alkali and dried.
As the formal content increases there is a progressive increase in softening point, impact strength and hardness. The materials, being amorphous, are soluble in solvents of similar solubility parameter, such as dichloroethylene and dioxan; as the acetate content increases, the polymers become more soluble in ketones, esters and glycol ethers.
The principal use of poly(vinyl formal) is in the electrical insulation of magnet wire. For this purpose, polymers with low hydroxyl content (5-6%) and low acetate content (10-13%) are used in admixture with a resol phenolic resin. On heating at about 175°C, cross-linking occurs; this reaction probably involves the formation of ether links by condensation of methylol groups in the resol and hydroxyl groups in the poly(vinyl formal). These coatings are extremely tough; of particular significance is the fact that they are able to withstand high-speed winding operations.
POLY(VINYL FORMAL) Preparation Products And Raw materials
Tag:POLY(VINYL FORMAL)(26876-25-5) Related Product Information
COBALT(II) ACETYLACETONATE Ethyl isocyanoacetate TERT-BUTYL ISOCYANIDE 1,1,3,3-TETRAMETHYLBUTYL ISOCYANIDE Tosylmethyl isocyanide METHYL ISOCYANOACETATE PHENYLSELENOL Tris(2,4-pentanedionato)chroMiuM(III) TRIS(2,2,6,6-TETRAMETHYL-3,5-HEPTANEDIONATO)EUROPIUM(III) TRIS(2,2,6,6-TETRAMETHYL-3,5-HEPTANEDIONATO)DYSPROSIUM(III) Benzyl isocyanide Cupric acetylacetonate DICHLORO(ETHYLENEDIAMINE)PLATINUM(II) Ferric acetylacetonate SALCOMINE 2,4-PENTANEDIONE, SILVER DERIVATIVE N-BUTYLISOCYANIDE Poly(vinyl alcohol)