Name | Ethylene|vinyl acetate copolymer |
Synonyms | eva VAE VAP EVA Ethylene Vinyl Acetate Ethylene-vinyl acetate latex ETHYLENE-VINYL ACETATE RESIN ETHYLENE-VINYL ACETATE LATEX Poly(ethylene-co-vinyl acetate) Ethylene-vinyl acetate copolymer ETHYLENE-VINYL ACETATE MOLDING RESIN Ethylene-vinyl acetate molding resin Ethylene-vinyl acetate copolymer resin ETHYLENE-VINYL ACETATE COPOLYMER RESIN Acetic Acid Ethenyl Ester, Polymer with Ethene |
CAS | 24937-78-8 |
EINECS | 607-457-0 |
InChI | InChI=1/C4H6O2.C2H4/c1-2-3-4(5)6;1-2/h2H,1,3H2,(H,5,6);1-2H2 |
Molecular Formula | C18H30O6X2 |
Molar Mass | 342.43 |
Density | 0.948g/mLat 25°C |
Melting Point | 75°C |
Boling Point | <200 °C |
Flash Point | 260 °C |
Solubility | toluene, THF, and MEK: soluble |
Vapor Presure | 0.714mmHg at 25°C |
Appearance | Solid |
Storage Condition | Room Temprature |
Stability | Stable. Combustible. Incompatible with strong oxidizing agents, bases. |
MDL | MFCD00133996 |
Physical and Chemical Properties | White powder. |
Use | Used as modifiers for various films, foamed products, hot melt adhesives and polymers |
Hazard Symbols | Xn - Harmful |
Risk Codes | 40 - Limited evidence of a carcinogenic effect |
Safety Description | S24/25 - Avoid contact with skin and eyes. S36/37 - Wear suitable protective clothing and gloves. |
WGK Germany | 1 |
RTECS | 000000041485 |
HS Code | 3905290000 |
An ethylene-vinyl acetate copolymer is prepared by copolymerization of ethylene and vinyl acetate. EVA obtained by copolymerization of different proportions of monomers has different VAc contents and uses. The production methods of ethylene-vinyl acetate copolymer mainly include high pressure method, solution method and emulsion method. At present, the most widely used method is the high pressure method.
The Inner packaging of the product is polyethylene film bag, the outer packaging is polypropylene woven bag, and the net weight of each bag is 25kg. During storage and transportation, iron hooks should be kept dry, clean and well-ventilated in the warehouse or compartment.
EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
introduction | ethylene-vinyl acetate copolymer (EVA) is obtained by copolymerizing ethylene and vinyl acetate in different proportions. e in the English abbreviation EVA represents ethylene component, VA represents vinyl acetate component, and its performance is closely related to the content of vinyl acetate (VA). according to the content of VA, it can be divided into three categories: EVA plastic with VA content of 5%-40% is called EVA plastic, which is mainly used for polyethylene modification, manufacturing wires and cables, other molded products and mixtures of film poles, etc. VA content in 40%-90% is called EVA rubber, which is mainly used for rubber, cables and automobile industrial components. Higher VA content than 90% is called polyvinyl acetate emulsion, which is mainly used for adhesives, coatings, etc. |
performance and application | ethylene-vinyl acetate copolymer has good impact resistance and stress cracking resistance, flexibility, high elasticity, puncture resistance, chemical stability, good electrical properties, good biocompatibility, low density, and good compatibility with fillers and flame retardants. With the different VA content, EVA has a wide range of applications from plastics, to rubber, and then to emulsions. It is suitable for extrusion, injection molding, blow molding, coating, thermoforming and other processing methods. It can be applied to cables, Seals, medical treatment, insulating films, pipes, plates, building materials, electrical accessories, auto parts and daily necessities and other products. |
preparation method | ethylene-vinyl acetate copolymers of various molecular weights can be obtained by high pressure free radical polymerization, bulk continuous polymerization or solution polymerization. |
safety | ethylene-vinyl acetate copolymer can be used as a film in some drugs. it is generally considered to be a relatively non-toxic and non-irritating excipient. |
use | ethylene-vinyl acetate copolymer can be used in the production of various films, foamed products, hot melt adhesives and polymer modifiers; It can also be used to prepare coatings and adhesives, and to paint interior and exterior walls of buildings. |
production method | evenly dusting and hot pressing. |
spontaneous combustion temperature | 500 °F |