Superabsorbent-coated aramid yarn and a process for manufacturin

Details Superabsorbent-coated aramid yarn and a process for manufacturin Superabsorbent-coated aramid yarn and a process for manufacturin

1991-10-23

1993-11-23

Beck, Shrive

Coating processes

With post-treatment of coating or coating material

Heating or drying

428395, 174 23C, 174107, B05D 302

Patent

active

052642518

ABSTRACT:
An aramid yarn, preferably poly(p-phenylene terephthalamide), is coated with a water swellable superabsorbent material. The swelling value of the yarn is at least 60. The superabsorbent provides water blocking capability to the yarn, so that it is suitable for use as a strength member, for example, in water tight optical communication cables. The yarn is made by successively treating an aramid yarn with a water-in-oil emulsion, a superabsorbent material being present in the water phase of the emulsion, and removing the liquid components from the treated yarn by evaporation.

REFERENCES:
patent: 4051065 (1977-09-01), Venema
patent: 4079027 (1978-03-01), Phillips et al.
patent: 4798744 (1989-01-01), Goldstein et al.
patent: 4888238 (1989-12-01), Katz
patent: 5204175 (1993-04-01), Umeda et al.
Becher, Emulsions: Theory and Practice, 1965, pp. 230-255.

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