Transparent hard styrene-acrylic emulsion and preparation method thereof

The invention discloses a transparent hard styrene-acrylic emulsion and a preparation method thereof, the styrene-acrylic emulsion comprises a first component, a second component, a third component and water, the first component comprises 2-10% by mass of an emulsifier and less than 0.1% by mass of a sodium hydroxide solution; the second component comprises less than 2% of an initiator, 0-2% of an emulsifier, 20-30% of a styrene monomer and 0-5% of an acrylic polymeric monomer; a third component: 4-10% of a neutralizer and 5-20% of protective glue; and the balance of water. According to the styrene-acrylic emulsion disclosed by the invention, aiming at improving transparency and high glossiness, the latex is prepared from the hard monomer, then the protective glue is added, and the emulsion is emulsified and modified, so that the emulsion is high in transparency, high in glossiness and good in adhesion fastness, and is more suitable for being used in the fields of highlight gloss oil, ink, transparent coating