Silane, (3-isocyanatopropyl)dimethoxymethyl is utilized as an adhesion promoter and surface modifier in various industries. It enhances adhesion and bonding in adhesives, sealants, and coatings.

Synthesis

A preparation method for Silane, (3-isocyanatopropyl)dimethoxymethyl, is characterized in that: it comprises the following steps:

1) 3-aminopropyl trimethoxysilane, dry urea, methyl-sulphoxide, a small amount of trimethyl orthoacetate are put in reactor;

2) under the condition stirred be heated to system to 65 ~ 95 DEG C, react deamination gas at vacuum-0.08 ~-0.09MPa, react 6 ~ 10 hours, until stop when reaction system is emerged without obvious bubble vacuumizing; The mixture of the materials such as urea propyl silane and solvent;

3) a small amount of catalyzer is added to reaction system, dimethyl sulfoxide (DMSO) is adopted to compare mixed diluting by the quality of 1:0.5 ~ 0.8 vitriol oil of 98% content, obtain mixed diluting liquid, this mixed diluting liquid is added drop-wise to stirring reaction in system lentamente, temperature of reaction controls at 75 ~ 95 DEG C, and time for adding controls at 4 ~ 6h;

4) stop dripping mixed diluting liquid when system pH value drops to 6 ~ 7; Then less than 50 DEG C are cooled to, the ammonium salt that sealing removed by filtration generates and other solid material; ; Filtrate, by filtrate decompression rectifying separation; Silane, (3-isocyanatopropyl)dimethoxymethyl product.

Main Components

Silane, (3-isocyanatopropyl)dimethoxymethyl is a chemical compound with the formula C8H19NO4Si. It contains an isocyanate group (NCO), a propyl group, a methyl group, and two methoxy groups linked to a silicon atom. 

Applications

Silane, (3-isocyanatopropyl)dimethoxymethyl is used as an adhesion promoter in paints and coatings, adhesives and sealants industries.

It is also used to improve mechanical and chemical properties of composites, acting as a coupling agent and a surface modifier, to enhance bonding between organic polymers and inorganic substrates.