Pressure-sensitive adhesive tape or pressure-sensitive adhesive sheet containing nitroglycerin
Patent 4421737 Issued on December 20, 1983. Estimated Expiration Date: 
March 25, 2001. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 25, 2001. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3632740 3734097 3742951 InventorsAssigneeApplicationNo. 06/247307 filed on 03/25/1981US Classes:424/449, Transdermal or percutaneous156/334, Hydrocarbon resin424/448, Pressure sensitive adhesive means427/208.4, Pressure sensitive adhesive428/352, With release or antistick coating428/355NIncluding nitrogen containing condensation polymer (e.g., polyurethane, polyisocyanate, etc.)ExaminersPrimary: McCamish, Marion E.Assistant: Buffalow, E. Rollins Attorney, Agent or FirmInternational ClassesA61K 9/70 (20060101)A61K 31/21 (20060101) Foreign Application Priority Data1980-03-25 JPAbstractPressure-sensitive adhesive tapes or sheets containing nitroglycerin whose release and retention are regulated. Process for the production of pressure-sensitive adhesive tapes or sheets containing nitroglycerin, in which a rubber base adhesives applied on a backing is coated with softeners containing nitroglycerin and then covered with an impermeable protection sheet. Process for the production of pressure-sensitive adhesive tapes or sheets containing nitroglycerin, in which a backing is coated with adhesives comprising a rubber base adhesive basis and tackifiers, while a separator is coated with a solution of softeners for rubber base adhesives in which nitroglycerin is dissolved, and then the softener coated surface of the separator is laid on the adhesive-coated surface of the backing and they are kept at the temperature at which nitroglycerin is stable so that the nitroglycerin and softeners transfer into the adhesives. | |
