CAS 24937-78-8 Poly(ethylene-co-vinyl acetate), vinyl acetate 25 wt. %, 19 g/10 min

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Poly(ethylene-co-vinyl acetate), vinyl acetate 25 wt. %, 19 g/10 min

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Catalog Number

ACM24937788-25

CAS Number

24937-78-8

Product Name

Poly(ethylene-co-vinyl acetate), vinyl acetate 25 wt. %, 19 g/10 min

Structure

Category

Ethylene-vinyl acetate (EVA)

Molecular Formula

(CH2CH2)m[CH2CH(OCOCH3)]n

Melting Point

75 °C

Density

0.948 g/mL at 25 °C (lit.)

Application

Poly(ethylene-co-vinyl acetate), with 25% vinyl acetate by weight and a melt flow index of 19 g/10 min, is primarily designed to enhance the performance and adaptability of various products and applications. This elastomer is known for its ability to improve adhesion in hot-melt and pressure-sensitive adhesives, as well as its application in conversion coatings and thermoplastic products. It exhibits excellent impact resistance, stress crack resistance, softness, high elasticity, puncture resistance, and chemical stability. Additionally, it possesses good electrical properties, biocompatibility, and low density, making it an ideal component for flexible tubing, color concentrates, gaskets, molded automotive parts, plastic lenses, and pumps. It also shows compatibility with fillers and flame retardants. Beyond industrial uses, it serves a vital role in healthcare, specifically in laminated transdermal drug delivery systems, acting as a membrane and backing. It effectively controls the delivery of medications such as atenolol, triprolidine, and furosemide, and its functionality can be enhanced by incorporating plasticizers for more advanced controlled-release systems.

Composition

vinyl acetate, 25 wt. %

MDL Number

MFCD00133996

Melt Index

19 g/10 min (190°C/2.16 kg)

Transition Temperature

softening point 46 °C (Vicat, ASTM D 1525)

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