Polyvinyl ether
| Polyvinyl ether |
|---|
 Polyvinyl methyl ether |
 Polyvinyl ethyl ether |
 Polyvinyl isobutyl ether |
Polyvinyl ethers form a group of plastics that are yellow-brown in color and have a typical odor. They belong to the group of oily to waxy thermoplastics .
Manufacturing
Polyvinyl ethers are made from vinyl ethers by chain polymerization - e.g. B. with boron trifluoride and traces of water - produced. In practice, the techniques of block , emulsion or solution polymerization are used. In particular polyvinyl methyl ether (Lutonal M), polyvinyl ethyl ether (Lutonal A) and polyvinyl isobutyl ether (Oppanol) are produced.
Copolymers
Also copolymers from
- Vinyl ethers and
- Vinyl chloride, acrylonitrile or acrylic acid ester
are produced.
use
- Polyvinyl methyl ether is used as a sizing and emulsifying agent as well as for the heat sensitization of rubber emulsions.
- Polyvinyl ethyl ether is water-insoluble and is used for leather preparation as well as for the production of glues and varnishes. A mixture of polyvinyl ethyl ether and polyvinyl isobutyl ether is permitted as a chewing gum base.
- Polyvinyl isobutyl ether is used in adhesive technology and as a coating and impregnating agent.
Individual evidence
- ↑ a b c d e f Brockhaus ABC Chemie . VEB FA Brockhaus Verlag, Leipzig 1965, pp. 1122-1123.
- ↑ Otto-Albrecht Neumüller (Ed.): Römpps Chemie-Lexikon. Volume 5: Pl-S. 8th revised and expanded edition. Franckh'sche Verlagshandlung, Stuttgart 1987, ISBN 3-440-04515-3 , pp. 3324-3325.