Production method of high-boiling silicone oil

• Main Authors: HE QIHONG, LI CHENXI
• Format: Patent
• Language: Chinese; English
• Published: 14.11.2023
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

The invention relates to the technical field of silicone oil, in particular to a production method of high-boiling-point silicone oil, which comprises the following steps: mixing an organic silicon high-boiling-point substance, a treating agent, an alkaline neutralizer and water for reaction; the reaction temperature is controlled to be 60-85 DEG C, and the reaction time is 2-3 hours. Alkali metal alkoxide is added into reactants, the reactants are mixed for a reaction, the reaction temperature is controlled to be 68-95 DEG C, and the reaction time is 2.5-3 h. Adding urea, a fluxing agent and a neutralizer, standing for layering when the pH value of the upper oil layer reaches 4-6, and removing a lower eutectic; and adding a neutralizer into the upper oil layer for neutralization until the pH value reaches 6-8, and filtering to obtain the high-boiling silicone oil finished product. The method can replace the traditional cracking preparation method of the organic silicon high-boiling residue, and solves the te