Rosin resin SOR 422 ke resin ea maleic acid, e tsejoang hape e le dehydrated maleic acid resin.Ke granular solid e lokisitsoeng ke karabelo ea rosin le maleic acid e fetotsoeng ka ho kenyelletsa rosin ho maleic acid anhydride le esterification ka glycerol kapa pentaerythritol.