Production method of antistatic PVB (polyvinyl butyral) resin

The invention provides a production method of antistatic PVB (Polyvinyl Butyral) resin, which comprises the following steps: preparing a PVA (Polyvinyl Alcohol) aqueous solution, adding a hydrochloric acid solution into the PVA aqueous solution, and uniformly mixing to obtain a first raw material; butyraldehyde is prepared, an antistatic agent is added into butyraldehyde, and after the antistatic agent is dissolved and dispersed, a second raw material is obtained; after the first raw material is cooled, adding a second raw material into the first raw material, uniformly stirring to obtain a mixed raw material, and then heating to react to obtain a reaction material; and adding an alkaline substance into the reaction material in the step S2 to adjust the pH to be alkaline finally, washing with water, and then drying to obtain the antistatic PVB resin. The antistatic agent is added into the production raw materials of the PVB resin, so that the prepared PVB resin particles have antistatic performance, and the s