The common technical route of methyl phenyl 108 adhesive is as follows: (1) the low boiling point and saturated vapor pressure of water lead to the water that actually participates in the reaction can not be precisely controlled, which leads to the problems of the viscosity of the product and the wide molecular weight distribution of the product, etc. . (2) the main problems are: (1) the high requirement of equipment, especially the use of acid as the catalyst for the polymerization of methyl phenyl hydrolysate and dimethyl hydrolysate with the help of acid catalyst; (2) the neutralization of acid catalyst produces more salts, which also leads to the poor transparency of the product, the difficulty of filtering salt and the uncontrollable viscosity of the product, etc. . 3) using hydrolysis equilibrium method of dimethyl dichlorosilane and methylphenyldichlorosilane, although the cost is relatively low, but there are many problems, mainly as follows: 1) there will be a large number of acidic wastewater, the equipment requirements are high; 2) the viscosity can not be controlled and so on.