Abstract: The present invention relates to a secondary lid for use with a package containing a foodstuff. That package has an opening that is initially sealed at purchase but the opening is unsealed by the consumer in order to obtain access to the contents of the package. There is a secondary lid that is affixed to the package and which reseals the opening and protects the contents from the external environment. The secondary lid may contact a flap or flaps of the package to hold the flap or flaps tightly closed to the opening or, in the case of a liquid, there may be a plug that enters the opening to prevent the contents from spilling. In any case, there is a seal formed in the secondary lid that surrounds and seals the opening from the environment to protect against the intrusion of air or moisture or other contaminants.

Abstract: A laminate structure includes an internal layer of foamed polymer. The foamed polymer replaces a paperboard layer used in prior laminate structures. Built upon the foamed polymer are three layers of low density polyethylene (LDPE), a layer of aluminum foil, and a tie layer. The foamed polymer may be polyethylene terephthalate (PET), polypropylene, high density polyethylene HDPE, LDPE, polystyrene, compositions comprising any of these polymers, or any other suitable foamed polymer compositions. The first LDPE layer coats a first surface of the foamed polymer, and the second LDPE layer coats a second surface of the foamed polymer. The aluminum foil layer is applied atop the second LDPE layer. The exposed surface of the aluminum foil is then coated with the tie layer, which is then topped with a third layer of LDPE. A non-polar homogeneous heat seal may be created at a temperature ranging from 250° F. to 500° F.

Abstract: A container constructed from a laminate structure that includes a layer of foamed polymer. The layer of foamed polymer replaces the paperboard layer of known laminate structures. A preferred embodiment of the laminate structure is comprised of a layer of foamed polymer, a first layer of low density polyethylene, a second layer of low density polyethylene, a layer of aluminum foil, a tie layer, and a third layer of low density polyethylene. The container has a non-polar homogeneous heat seal that may be created by conventional equipment at a temperature ranging from about 250 degrees Fahrenheit to about 500 degrees Fahrenheit.

Abstract: A container constructed from a laminate structure that includes a layer of foamed polymer. The layer of foamed polymer replaces the paperboard layer of known laminate structures. A preferred embodiment of the laminate structure is comprised of a layer of foamed polymer, a first layer of low density polyethylene, a second layer of low density polyethylene, a layer of aluminum foil, a tie layer, and a third layer of low density polyethylene. The layer of foamed polymer may be comprised of polyethylene terephthalate, polypropylene, high density polyethylene, low density polyethylene, polystyrene, compositions comprising any of these polymers, or any other suitable foamed polymer compositions that possess similar physical characteristics. The first layer of low density polyethylene coats the outer surface of the layer of foamed polymer, and the second layer of low density polyethylene coats the inner surface of the layer of foamed polymer.

Abstract: An improved thermoplastic nylon molding resin comprising intimately mixed nylon molding resin and glass reinforcing agents in the presence of polyethylene terephthalate resin.

Abstract: A process for the purification of crude 3,3'-diaminobenzidine comprising contacting it with sulfuric acid. The 3,3'-diaminobenzidine can be produced by the reaction of NH.sub.3 and 3,3'-dichlorobenzidine in the presence of various catalysts.