Patent classifications
C
CHEMISTRY; METALLURGY
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C07
ORGANIC CHEMISTRY
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C07C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
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41/00
Preparation of ethers; Preparation of compounds having groups, groups or groups
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C07C41/34
Separation; Purification; Stabilisation; Use of additives
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C07C41/40
by change of physical state, e.g. by crystallisation
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C07C41/42
by distillation
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