Preparation of crystalline hot melt composition

Claim 1

In a container of composite construction formed of a glass envelope having a mouth opening at one end thereof and being substantially continuous convexly arcuate in the axial section along a substantial extent of its end portion disposed opposite said mouth, and a cup-like polyethylene fitment bonded to said envelope by hot melt adhesive means the improvement wherein said adhesive means is an annular band of creep resistant thermoplastic adhesive having a tensile shear strength of about 75 to 140 pounds per 1 inch × 1/2 inch lap, and an average molecular weight of about 2,000 to 7,000, said thermoplastic adhesive being the polymeric product of the condensation of a monomer mixture consisting essentially of (a) a stoichiometric amount to about 7 mole percent excess of a compound of the formula ##EQU4## wherein R is a saturated aliphatic hydrocarbon radical of 4-10 carbon atoms, and (b) a compound of the formula NH 2 --R'--OH wherein R' is a saturated aliphatic hydrocarbon radical of 2 to 6 carbon atoms, or a mixture of 70 to 99 mole percent of a compound of the formula NH 2 --R'--OH, wherein R' is a saturated aliphatic hydrocarbon radical of 2 to 6 carbon atoms with 1 to 30 mole percent of a compound of the formula NH 2 --R"--NH 2 wherein R" is a saturated aliphatic hydrocarbon radical of 2 to 6 carbon atoms or a symmetrical alicyclic hydrocarbon radical of 8 carbon atoms.