I-rosin resin SOR 424 i-resin enemibala ekhanyayo kunye nezinzile, esekelwe kwi-rosin kunye ne-polyacid engaxutywanga njengezinto ezisisiseko.I-rosin kunye ne-anhydride ye-maleic yokongeza i-reaction kunye ne-esterification ye-pentaerythritol, kwaye iphuhliswe ngokucokisa, i-decolorization, ukuguqulwa kunye nezinye iinkqubo.I-varnish eveliswa yiyo ineenzuzo zokukhanya okuphezulu, ubunzima obuphezulu kunye nokubambelela okuqinileyo.