Vinyl Ethers Application

1930s based on the reppe reaction of acetylene with alcohols.

Vinyl ethers application.

It is used as a synthetic building block and a monomer. Ethyl vinyl ether is an organic compound with the chemical formula ch 3 ch 2 och ch 2. Vinyl ether hydroxy vinyl ethers prior art date 1950 03 02 legal status the legal status is an assumption and is not a legal conclusion. From the portfolio of available vinyl ethers the higher boiling and the difunctional vinyl ethers are preferred in coatings applications.

Low molecular weight vinyl ethers are versatile monomers for polymerization. Many different vinyl ethers are commercially available today. The electron rich nature of vinyl ethers ch2 chor enables their versatile reactivity patterns with transition metal catalysts. It is also important that r is a good radical leaving group.

Polyvinyl ethers are a class of organic polymers derived from vinyl ethers common monomers include methyl vinyl ether and ethyl vinyl ether the polymer having the formula ch 2 ch or n r methyl ethyl. Vinyl ester resins are produced by the reaction esterification between an epoxy resin and an unsaturated monocarboxylic acid. Vinyl esters also use peroxides e g. Teator and leibfarth report a general protocol to polymerize a variety of such vinyl ethers isotactically see the perspective by foster and o reilly.

Essentially they comprise a base of polyester resin strengthened with epoxy molecules in the backbone of the molecular chain. Certain vinyl ethers obtained through the carbide route can be utilized as monomers in polymerization by cationic and free radical mechanisms. Usage of calcium carbide for vinylation reaction is a rapidly expanding area with numerous research efforts to produce ves from alcohols thiols amines among many other examples 69 71 74. 8 21 227 228 the mechanism for chain transfer is shown in scheme 9 for the case of α benzyloxystyrene 15 the driving force for fragmentation is provided by formation of a strong carbonyl double bond.

Well optimized catalysts produce vast quantities of isotactic polypropylene in which the side chains all face the same way. Vinyl ethers undergo homopolymerization via a cationic mechanism. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed expired lifetime application number us147333a inventor robert l adelman. Vinyl ethers undergo radical initiated copolymerization in the presence of specific monomers such as maleates fumarates and acrylics.

Vinyl ethers 1 x ch 2 a o can be very effective addition fragmentation chain transfer agents. It is the simplest enol ether that is liquid at room temperature. They are increasingly used in radiation curing systems because of a lower toxicity profile than the commonly used acrylic monomers. Add an oxygen into the monomer though and that degree of uniformity becomes harder to enforce.