Vinyl Ether Process

Vinyl ether process ch polymer reacting prior art date 1998 09 28 legal status the legal status is an assumption and is not a legal conclusion.

Vinyl ether process.

Vinyl ethers undergo radical initiated copolymerization in the presence of specific monomers such as maleates fumarates and acrylics. It is used as a synthetic building block and a monomer. Poly methyl vinyl ether alt maleic acid monoethyl ester solution1 product result match criteria. Vinyl ethers undergo homopolymerization via a cationic mechanism.

The use of epoxide vinyl ether combinations alleviates this problem and the presence of the vinyl ether increases the cure speed compared to a formulation in which the vinyl ether is absent 21. Direct photolysis will not be an important removal process since butyl vinyl ether does not absorb light at wavelengths 290 nm 5. Many of the vinyl ethers exhibit good solvating properties and have been used as reactive diluents fo this purpose. Butyl vinyl ether may be susceptible to photooxidation via vapor phase reaction with ozone.

A process for efficiently producing a high purity vinyl ether represented by formula 1 from a tertiary alcohol having low reactivity is provided the process comprising reacting acetylene with the tertiary alcohol in the presence of a base using a cyclic urea compound a glyme compound or a mixture of these as a solvent. Both polymers exhibited t g s 88 and 61 c respectively well above the room temperature. The process involved capping the initiator tmpcl with dte in the presence of ticl 4 followed by fine tuning of the lewis acidity with the addition of ti oip 4 to match the reactivity of tert butyl vinyl ether or chve. According to a classification scheme 7 an estimated bcf of 3 src from an estimated log kow of 0 42 2 and a regression.

Vinyl ether is a potent anesthetic giving it a large safety margin. They are increasingly used in radiation curing systems because of a lower toxicity profile than the commonly used acrylic monomers. It is the simplest enol ether that is liquid at room temperature. Vinyl methyl ether is expected to undergo hydrolysis in the environment based on hydrolysis half lives of 9 5 hours 40 days and 10 9 years at ph 5 6 and 9 respectively in structurally similar butyl vinyl ether 6.

The half life for this reaction in air is estimated to be 6 5 days 4 src. However this potency is hard to control with simplistic equipment. Use of ethyl vinyl ether in the synthesis of glutaraldehyde.