Stratum having release properties and method of making
US3957724A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 1973 |
| Grant date | May 18, 1976 |
| Priority date | — |
| Expiry date | Dec 11, 1993 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31663
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.