Grinding process for high viscosity cellulose ethers
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United States of America Patent
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Apr 11, 1989
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N/A
app pub date -
Feb 12, 1988
filing date -
May 1, 1986
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Abstract
High viscosity cellulose ether products are produced by grinding a substantially dry high molecular weight cellulose ether under conditions of mild mechanical impact such as those encountered in a high speed air swept impact mill. It has been found that such a cellulose ether product has several times the intrinsic viscosity of a product of substantially equivalent particle size by ball mill or hammer mill grinding.
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