Indigo blue-colored bioabsorbable surgical fibers and production

Details Indigo blue-colored bioabsorbable surgical fibers and production Indigo blue-colored bioabsorbable surgical fibers and production

1987-01-20

1988-06-14

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Organic additive for dye composition, dye composition...

Polymeric additive

8489, 8497, 8653, 8916, 1283355, 264 78, 2642106, 264211, 528354, C09B 700, C09B 6700, A61L 1700

Patent

active

047509104

ABSTRACT:
Blue-colored bioabsorbable surgical fibers are obtained by adding and dispersing a bioabsorbable polymer, which is selected from polyglycolic acid, poly(l-lactic acid) and glycolic acid-l-lactic acid copolymers all of which are useful as surgical fibers, and indigo in a non-aqueous organic solvent having low solubility for the polymer and indigo, heating the resultant dispersion at a temperature below 120.degree. C. to distill off the solvent, thereby to obtain a master batch with the indigo incorporated therein at a high concentration, mixing and kneading the master batch with a fresh supply of the polymer, and then spinning the resultant polymer mixture.

REFERENCES:
patent: 3034850 (1962-05-01), King
patent: 3047352 (1962-07-01), Santoro et al.
patent: 3297033 (1967-01-01), Schmitt et al.
patent: 3527556 (1970-09-01), Riley
patent: 3636956 (1972-01-01), Schneider
patent: 3839297 (1974-10-01), Wasserman et al.
patent: 4008303 (1977-02-01), Glick et al.
Pharmaceutical News Index, file 42, & Medical Devices, Diagnostics and Instrumentation Reports-(The Gray Sheet), vol. 10, No. 31 Jul. 30, 1984.
Chemical Abstracts, vol. 101, No. 14, Oct. 1, 1984, pp. 344, abstract No. 116623p, Columbus, Ohio.

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