Thermoplastic laminate tie layer using a polymeric blend adhesiv

Details Thermoplastic laminate tie layer using a polymeric blend adhesiv Thermoplastic laminate tie layer using a polymeric blend adhesiv

1987-01-12

1988-05-03

Ives, P. C.

Stock material or miscellaneous articles

Composite

Of addition polymer from unsaturated monomers

428518, 428 35, 525 66, 2641761, B32B 2708, B32B 2736

Patent

active

047419709

ABSTRACT:
A thermoplastic laminate structure consisting of a plurality of layers wherein at least one of the layers is the adhesive polymeric blend. The adhesive polymeric blend comprises a dispersed phase of poly-2-oxazoline and a glycol and a continuous phase of grafted polypropylene. The preferred poly-2-oxazoline is poly-2-ethyl-2-oxazoline and the preferred glycols are polyalkylene glycols. The grafted polypropylene comprises from about 50 to 80 percent by weight of the total polymeric blend. The grafted polypropylene contains from about 0.1 to about 5 percent by weight total polymer of a graft portion derived from an .alpha.,.beta.-ethylenically unsaturated carboxylic acid or an unsaturated cyclic anhydride wherein said glycol is in slight excess to the graft, i.e., molar ratio of glycol to graft is 1.1 to about 1.5:1.

REFERENCES:
patent: 4146590 (1979-03-01), Yamamoto et al.
patent: 4474928 (1984-10-01), Hoenig et al.
patent: 4477532 (1984-10-01), Schmukler et al.
patent: 4612252 (1986-09-01), Sagane et al.

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