ELASTIC POLYURETHANE FIBER AND PROCESS FOR PRODUCING THE SAME

摘要

An elastic polyurethane fiber containing 0.5 to 10 % by weight, based on the fiber, particles of a composite oxide containing aluminum and at least one member selected between zinc and magnesium in a specific proportion. The fiber is suitable for use as a material for highly chlorine-resistant swimming suits for swimming pools. This elastic fiber is obtained by spinning a polyurethane dope containing the composite oxide particles in an amount of 0.5 to 10 % by weight based on the polyurethane. The dope is extremely reduced in filter clogging or thread breaking during spinning both caused by secondary aggregation of the composite oxide particles, and is stably spinnable over long.