Polycarbonate sizing finish and method of application thereof

Details Polycarbonate sizing finish and method of application thereof Polycarbonate sizing finish and method of application thereof

1982-09-23

1983-11-22

Beck, Shrive P.

Coating processes

With post-treatment of coating or coating material

Heating or drying

4273898, 4273899, 4274346, 428375, 428412, 524104, B05D 726

Patent

active

044169248

ABSTRACT:
An improved polycarbonate sizing finish is provided comprised of a polycarbonate dissolved in a solvent mixture comprising N-methyl-2-pyrrolidone (NMP) and an alcohol having from 1 to 4 carbon atoms. The use of such a solvent mixture enables a relatively constant concentration of polycarbonate to be maintained, and consequently, enables a sized product fiber to be provided having a substantially uniform polycarbonate concentration thereon. In addition, the solvent may be readily and substantially completely removed from the sized fiber.

REFERENCES:
patent: 2997459 (1961-08-01), Schnell et al.
patent: 3028365 (1962-04-01), Schnell et al.
patent: 3065204 (1962-11-01), Dietrich et al.
patent: 3580730 (1971-05-01), Grabowski
patent: 3919167 (1975-11-01), Mark

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