Poly(vinyl alcohol) microfibrillar short fiber and method for its use
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United States of America Patent
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Sep 26, 2000
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N/A
app pub date -
Dec 4, 1996
filing date -
May 25, 1994
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Expired
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Abstract
This invention is a poly(vinyl alcohol) microfibrillar short fiber and its method of preparation, especially manufacturing a microfibrillar poly(vinyl alcohol) short fiber having high tensile strength, high tensile modulus, high fineness, and excellent alkali resistance using a special saponifying agent and through an advanced mechanical shearing operation in the course of saponification of poly(vinyl pivalate) to poly(vinyl alcohol) without requiring spinning, drawing, and heat treatment.
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