Microfibrillated cellulose
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United States of America Patent
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Nov 20, 1984
Issued Date -
N/A
app pub date -
Oct 18, 1982
filing date -
Oct 22, 1981
priority date (Note) -
Expired
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Abstract
Microfibrillated celluloses having properties distinguishable from all previously known celluloses, are produced by passing a liquid suspension of cellulose through a small diameter orifice in which the suspension is subjected to a pressure drop of at least 3000 psig and a high velocity shearing action followed by a high velocity decelerating impact, and repeating the passage of said suspension through the orifice until the cellulose suspension becomes a substantially stable suspension. The process converts the cellulose into microfibrillated cellulose without substantial chemical change of the cellulose starting material.
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