Ink-absorbing coating emulsion and preparation method thereof

The invention relates to the technical field of ink printing, and particularly discloses an ink-absorbing coating emulsion and a preparation method thereof. The ink-absorbing coating emulsion is prepared from the following components in parts by weight: 40 to 45 parts of methyl methacrylate, 30 to 40 parts of butyl acrylate, 10 to 15 parts of styrene, 1 to 3 parts of methacrylic acid, 1.5 to 3 parts of an emulsifier, 0.3 to 2 parts of a cross-linking monomer, 1 to 3 parts of an initiator and 100 parts of deionized water. According to the invention, by selecting the types and proportions of monomers such as methyl methacrylate, styrene, butyl acrylate and methacrylic acid and adding reasonable types and proportions of crosslinking monomers, the prepared emulsion has the characteristics of proper glass transition temperature, excellent yellowing performance, high printing and drying speed, bright and uniform printing color and low cost; and the requirements of an existing outdoor photo printing ink-absorbing co