Abstract Thermoplastic adhesive polycarbonamide-ester compositions having molecular weights ranging from about 2000 to 7000, a viscosity of about 2000 to 5000 centipoise at 160*C. and a tensile shear strength of about 75 to 140 pounds per 1 X 1/2 inch lap, which are useful in the formation of creep resistant adhesive bonds in product assembly between laminae of relatively impervious materials such as glass, metals and certain of the plastics, e.g. polyethylene. An outstanding product assembly of this invention is a container of composite construction having a glass envelope of thin walled construction in the shape of an inverted light bulb bonded to a plastic cup-like base member with the above-described thermoplastic adhesive composition.
IN A LAMINATED ARTICLE COMPRISING TWO JUXTAPOSED LAMINA OF RELATIVELY IMPERVIOUS MATERIALS, WHEREIN ONE OF SAID LAMINA IS POLYETHYLENE, AND HOT MELT ADHESIVE MEANS DISPOSED INTERMEDIATE SAID LAMINA FOR BONDING SAID LAMINA TO EACH OTHER, THE IMPROVEMENT WHEREIN SAID ADHESIVE MEANS IS A CRYSTALLINE, CREEP-RESISTANT COMPOSITION HAVING A TENSILE SHEAR STRENGTH OF ABOUT 75 TO140 POUNDS PER 1 INCH BY 1 2 INCH LAP, SAID COMPOSITION BEING THE POLYMERIC PRODUCT OF THE CONDENSATION OF A MONOMER MIXTURE CONSISTING ESSENTIALLY OF A. A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
86 words
IN A LAMINATED ARTICLE COMPRISING TWO JUXTAPOSED LAMINA OF RELATIVELY IMPERVIOUS MATERIALS, WHEREIN ONE OF SAID LAMINA IS POLYETHYLENE, AND HOT MELT ADHESIVE MEANS DISPOSED INTERMEDIATE SAID LAMINA FOR BONDING SAID LAMINA TO EACH OTHER, THE IMPROVEMENT WHEREIN SAID ADHESIVE MEANS IS A CRYSTALLINE, CREEP-RESISTANT COMPOSITION HAVING A TENSILE SHEAR STRENGTH OF ABOUT 75 TO140 POUNDS PER 1 INCH BY 1 2 INCH LAP, SAID COMPOSITION BEING THE POLYMERIC PRODUCT OF THE CONDENSATION OF A MONOMER MIXTURE CONSISTING ESSENTIALLY OF A. A COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
16 words
The laminated article of claim 1 wherein the other of said two juxtaposed lamina is glass.