Ethylene-vinyl acetate copolymer Chemische Eigenschaften,Einsatz,Produktion Methoden
R-Sätze Betriebsanweisung:
R40:Verdacht auf krebserzeugende Wirkung.
S-Sätze Betriebsanweisung:
S24/25:Berührung mit den Augen und der Haut vermeiden.
S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.
Verwenden
Flexible tubing, color concentrates, gaskets and molded parts for autos, plastic lenses and pumps.
Vorbereitung Methode
Various molecular weights of random ethylene vinyl acetate
copolymers can be obtained by high-pressure radical polymerization,
bulk continuous polymerization, or solution polymerization.
Definition
An elastomer used to improve adhesion properties of hot-melt and pressure-sensitive adhesives, as well as for conversion coatings and thermoplastics.
Allgemeine Beschreibung
Poly(ethylene-
co-vinyl acetate) (PEVA) is a flame-retardant material with good mechanical and physical properties. It is majorly used as an insulating material in wire and cable industry.
Pharmazeutische Anwendungen
Ethylene vinyl acetate copolymers are used as membranes and
backings in laminated transdermal drug delivery systems. They can
also be incorporated as components in backings in transdermal
systems. Ethylene vinyl acetate copolymers have been shown to be
an effective matrix and membrane for the controlled delivery of
atenolol triprolidine, and furosemide. The system for the
controlled release of atenolol can be further developed using
ethylene vinyl acetate copolymers and plasticizers.
Sicherheit(Safety)
Ethylene vinyl acetate is mainly used in topical pharmaceutical
applications as a membrane or film backing. Generally it is regarded
as a relatively nontoxic and nonirritant excipient.
Lager
Ethylene vinyl acetate copolymers are stable under normal
conditions and should be stored in a cool, dry place. Films of
ethylene vinyl acetate copolymers should be stored at 0–30°C and
less than 75% relative humidity.
Inkompatibilitäten
Ethylene vinyl acetate is incompatible with strong oxidizing agents
and bases.
Regulatory Status
Included in the FDA Inactive Ingredients Database (intrauterine
suppository; ophthalmic preparations; periodontal film; transdermal
film). Included in nonparenteral medicines licensed in the UK.
Ethylene-vinyl acetate copolymer Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
