POLY(VINYL METHYL ETHER) Chemical Properties

Melting point:

112-144 °C

Density 

1.03 g/mL at 25 °C

vapor pressure 

0.03 atm ( 20 °C)

refractive index 

n20/D 1.467

Water Solubility 

Soluble in water

form 

clear liquid

color 

Colorless to Yellow to Orange

SMILES

C(OC)(CC(*)OC)CC(OC)C* |$;;;;;*;;;;;;;;*$|

CAS DataBase Reference

9003-09-2

EPA Substance Registry System

Ethene, methoxy-, homopolymer (9003-09-2)

Safety Information

Risk Statements 

36/37/38

Safety Statements 

26-36/37/39

RIDADR 

UN 1230 3/6.1/PG II

WGK Germany 

1

HS Code 

2909.19.6000

HazardClass 

3/6.1

PackingGroup 

II

MSDS

• Language:English Provider:SigmaAldrich

POLY(VINYL METHYL ETHER) Usage And Synthesis

Definition

ChEBI: A macromolecule composed of repeating methoxyethyl groups.

Preparation

Vinyl ethers are prepared by reaction of acetylene and alcohols in the presence of the potassium alkoxide as catalyst:

For the production of polymers, methyl, ethyl and isobutyl vinyl ethers are the most common monomers.
Vinyl ethers are susceptible only to cationic polymerization. In a typical process, methyl vinyl ether is agitated with boron trifluoride (BF 3. 2H20). The temperature is kept at about l0?? by cooling for 3-4 hours; the reactor is then sealed and the temperature allowed to rise to 100??C. Reaction is complete in about 10 hours and the polymer is obtained as a viscous mass. It is interesting to note that poly(vinyl isobuty ether) may be obtained in crystalline form by conducting polymerization at - 80?? to -60??C in liquid propane using boron trifluoride etherate as initiator. This was the first stereoregular polymerization to be achieved. Incidentally, isotactic polymer has also been prepared by the use of Ziegler-Natta type catalysts and this was the first indication that these catalysts could polymerize a suitable monomer by a cationic mechanism.
Poly(vinyl methyl ether) is water-soluble and is used in adhesive and textile sizes. The ethyl and isobutyl polymers find use in pressure-sensitive adhesives.

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