| abstract |
A stratum having accurately predictable and controllable release properties toward normally tacky and pressure-sensitive adhesive sheet materials is prepared by reacting two moieties, one terminated with a plurality of isocyanate groups and the other a liquid hydroxyl- or amine-containing organosilicone. The hydroxyl or amine groups are at least three carbon atoms distant from the nearest silicone atom and constitute no more than about 4% by weight of the organosilicone. Depending upon the release characteristics achieved, the reaction product can function as a shaped article, all or part of a release liner, or as a low-adhesion backsize for pressure-sensitive adhesive tape. |