epsilon-CAPROLACTONE → Poliglecaprone

Participants

Reaction Steps

We have discovered a process for producing a suture from copolymers of glycolide and ε-caprolactone comprising the steps of (a) extruding a melted copolymer of a glycolide and ε-caprolactone resin through an orifice and rapidly quenching the melted copolymer resin to produce a filament; (b) drawing the filament in the range of from about 4× to about 7.5× to produce a singly drawn filament; (c) drawing the singly drawn filament in the range of form about 1× to about 3× in a first heated zone being maintained at a temperature in the range of from about 150° F. to about 450° F., to form a doubly drawn filament; (d) shrinking the doubly drawn filament in the range of from about 0.75 percent to about 0.98 percent, in a second heated zone being maintained at a temperature in the range of from about 100° F. to about 400° F., to form a relaxed filament then rack annealing the relaxed filament to form a glycolide/ε-caprolactone suture.

Provenance & Evidence