| abstract |
The present invention relates to an ethylene-vinyl acetate copolymer (hereinafter, EVA) resin and a method of manufacturing the same, more particularly, to high by GPC-LSD Deacon volumetric illustration, as measured by GPC-LSD-molecular weight component (F HMW) 10% And a low molecular weight component (F LMW ) of less than 40%, and a process for producing the EVA resin. As a production method therefor, 65 to 78% by weight of an ethylene monomer and 22 to 35% by weight of a vinyl acetate monomer were fed into a reactor and the polymerization temperature was 190 to 250 ° C, polymerization pressure was 2,600 to 2,700 kg / cm 2 , polymerization time was 2 to 5 minutes Lt; / RTI > Wherein the peroxide type polymerization initiator is (A) an alkyl peroxyneodecanoate compound having 4 to 5 carbon atoms in an alkyl group bonded to peroxide; And (B) an alkylperoxy pivalate compound having 4 to 5 carbon atoms in an alkyl group bonded with a peroxide, and (C) an alkyl peroxyhexanoate compound having 4 to 5 carbon atoms in an alkyl group bonded with a peroxide (A): (B): (C) = 30 to 50:20 to 40:20 to 40 in the first reaction stage, and then the peroxide implantation in the reaction stage (A): (B): (C) = 1 to 20: 10 to 30: 50 to 80 in the mixing ratio of water to water. |