Isocyanate group-containing organosilicon compounds, to a process for their preparation, adhesives, adhesives and coatings

The present invention provides an organosilicon compound containing an isocyanate group by an ene-thiol addition reaction of an organosilicon compound having a mercapto group and an isocyanate compound having a polymerizable group. [Effect] A silane coupling agent having a linking structure in which a sulfur atom is always included in the linking chain of an isocyanate group and a hydrolyzable silyl group represented by the formula (1), and can be used as an adhesion modifier. Compared with silane coupling agents used in existing technology, the sulfur-containing linked structure increases hydrophobicity and the proportion of organic moieties increases, resulting in improved compatibility with the resin, A pressure-sensitive adhesive that is excellent in binding force and interaction with the matrix resin it has, and can achieve both initial reworkability and high adhesive strength at high temperature or high temperature and high humidity can be obtained. [Selection figure] None