POLY(VINYL ALCOHOL)-BASED FIBERS HAVING EXCELLENT THERMAL AGING RESISTANCE, AND METHOD FOR PRODUCING SAME
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United States of America Patent
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Sep 18, 2015
filing date -
Mar 29, 2013
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Abstract
Polyvinyl alcohol fibers containing: 0.05% by mass of an antioxidant composed of an inorganic or organic water soluble salt of at least one metal selected from the group consisting of manganese, copper, iron, nickel, cobalt, and zinc; and a boron compound that acts as a chelating agent for the antioxidant, the boron compound being contained in the fiber with a proportion in % by mass of 0.5% or more relative to the antioxidant.
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