Mono- or biaxially drawn polyketone films

Details Mono- or biaxially drawn polyketone films Mono- or biaxially drawn polyketone films

1991-10-18

1992-12-29

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymer of an ethylenically unsaturated reactant with a...

2642902, 264264, C08G 6702, B29C 5508

Patent

active

051752450

ABSTRACT:
Processes for producing mono- and biaxially drawn polyketone films from linear polymers of carbon monoxide, ethylene, and at least one ethylenically unsaturated hydrocarbon having a melting point of at least 214.degree. C., comprising drawing of a linear polymer sheet along one or two axes, respectively, at a draw temperature of from about 4.degree. to 15.degree. C. below the melting point of the terpolymer, and a draw ratio of between 4 to 20. Also disclosed are the products which have and exhibit good properties of strength and stiffness, even at low draw ratios, produced by these processes.

REFERENCES:
patent: 4798884 (1989-01-01), Brons et al.
patent: 4843145 (1989-06-01), Drent et al.

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