In fact, living carbocationic polymerization systems have been developed for a number of monomers including vinyl ethers, isobutylene, and styrene.
Since homopolymers of the plant oil-based vinyl ethers possess a very low Tg, it was of interest to increase polymer Tg by copolymerization.
In addition, the fatty acid-substituted vinyl ethers
can be copolymerized with water-soluble monomers to form polymers that can be dispersed in water without the need for an added surfactant.
Curable candidates include acrylates, methacrylates, styrene, epoxies, vinyl ethers
, and cyanate esters.
When the photolysis of the vinyl ethers
were carried out in presence of air in acetonitrile as solvent, a C=C bond scission occurred, that resulted in the formation of the ketone (about 60%), while the expected aldehyde was obtained as a minor product (about 20%).
Raw materials are discussed for both free radical and cationic systems in terms of monomers, oligomers, vinyl ethers
, epoxies as well as photoinitiators.
To make the dispersions, equimolar amounts of chlorotrifluoroethylene and a variety of functionalized vinyl ethers were polymerized.
Solvent, several types of vinyl ethers, and potassium carbonate were placed in a stainless steel autoclave.
increase for ethylene carbonate and propylene carbonate and 8% increase for propargyl alcohol, vinyl ethers
and specialty pyrrolidones in U.
Products: Propargyl alcohol, vinyl ethers
, and specialty pyrrolidones
Rohm and Haas Company has received a patent for a method for making a coating having a low gloss finish comprised of disposing a layer of a coating powder onto a substrate, wherein the coating powder comprises one or more than one cationic curable resin chosen from aromatic epoxides, polyglycidyl compounds having an aromatic structure, epoxy novolac resins, epoxy cresol resins, vinyl ethers
, oxetanes, oxolanes, cyclic acetals, thiiranes, thiotanes, and combinations thereof; one or more cationic photoinitiator; one or more free radical curable resin; and one or more free radical photoinitiator.
Features strong solvent for polymers (epoxies and polyamides), acrylate monomer free, excellent toxicology profile, good adhesion on difficult substrates, low, but effective levels of vinyl ether