Preparation of silicone rubber self-adhesive tape base

Michael Addition Reaction of Aminoalkyl Decyloxymethane with Y-Propylene Glyoxypropyltrimethoxysilane: In a 1000 mL flask equipped with a stirrer, thermometer, reflux cooler, and addition funnel, add 221 g 7-Aminopropyltrimethoxysilane (11,110 Å) was slowly dripped from the addition funnel over 234 g (1 mol) of 7-acryloyloxypropyltrimethoxymethane over 3 h. Then, the reaction was continued at 80 X: reaction for 5 h. When gas chromatographic analysis confirmed that the aminopropyltrimethoxystearate having a molar fraction of 95% or more had reacted, the reaction was terminated to obtain an addition reaction product of a pale yellow transparent liquid. The product structure was confirmed by IR and 1 H-NMR analysis:

(CH30)s SiQHjOCCi!^ NHCs H( SiCOCHj),

Base material preparation: 100 parts of dilight-based polydimethylsiloxane (2510) with a viscosity of 20000 mPa.s, and 80 parts of colloidal calcium carbonate treated with resin acid were mixed and mixed into a base materia