Patent classifications
C
CHEMISTRY; METALLURGY
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C08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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C08B
POLYSACCHARIDES; DERIVATIVES THEREOF
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11/00
Preparation of cellulose ethers
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C08B11/20
Post-etherification treatments of chemical or physical type,; e.g. mixed etherification in two steps; , including purification
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