POLY(VINYL METHYL ETHER)

CAS NO.：9003-09-2
Empirical Formula: C9H18O3X2
Molecular Weight: 174.24
MDL number: MFCD00161528
EINECS: 230-993-8
SAFETY DATA SHEET (SDS)
Update Date: 2024-07-02 17:04:22

What is POLY(VINYL METHYL ETHER)?

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:

9003-09-2 synthesis

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.

Properties of POLY(VINYL METHYL ETHER)

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
CAS DataBase Reference	9003-09-2
EPA Substance Registry System	Ethene, methoxy-, homopolymer (9003-09-2)

Safety information for POLY(VINYL METHYL ETHER)

Signal word	Danger
Pictogram(s)	Flame Flammables GHS02 Exclamation Mark Irritant GHS07 Health Hazard GHS08
GHS Hazard Statements	H225:Flammable liquids H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation H336:Specific target organ toxicity,single exposure; Narcotic effects H360:Reproductive toxicity H370:Specific target organ toxicity, single exposure H372:Specific target organ toxicity, repeated exposure
Precautionary Statement Codes	P201:Obtain special instructions before use. P202:Do not handle until all safety precautions have been read and understood. P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P233:Keep container tightly closed. P240:Ground/bond container and receiving equipment. P241:Use explosion-proof electrical/ventilating/lighting/…/equipment. P242:Use only non-sparking tools. P243:Take precautionary measures against static discharge. P260:Do not breathe dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P270:Do not eat, drink or smoke when using this product. P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P337+P313:IF eye irritation persists: Get medical advice/attention. P370+P378:In case of fire: Use … for extinction. P405:Store locked up. P403+P233:Store in a well-ventilated place. Keep container tightly closed. P403+P235:Store in a well-ventilated place. Keep cool.