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US2237628A
|
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Separation of tri-ethyl amine from reaction mixtures
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US2237627A
|
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Sulphurization of organic polysulphides
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US2180314A
|
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Sulphonic acids of aromatic compounds
|
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US2210962A
|
|
Sulphonic acids of aromatic compounds
|
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US2244849A
|
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Manufacture of polycarboxylic acids
|
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US2226357A
|
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Manufacture of polycarboxylic acids
|
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US2243471A
|
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Manufacture of nitric acid esters
|
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US2237626A
|
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Purification of crude esterification mixtures
|
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US2237625A
|
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Sulphurization of sulphur-containing organic conpounds
|
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US2183405A
|
|
Treatment of organic compounds
|
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US2208331A
|
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Manufacture of resins
|
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US2228325A
|
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Lubricant
|
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US2178519A
|
|
Bypass odorizer
|
|
US2147400A
|
|
Manufacture of hydrocarbon compounds containing sulphur
|
|
US2183499A
|
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Manufacture of amines
|
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US2192523A
|
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Ammonolysis of secondary and tertiary amines
|
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US2122110A
|
|
Halogenation of aliphatic alcohols
|
|
US2107060A
|
|
Method of preparing phenolic compounds
|
|
US2091483A
|
|
Manufacture of secondary and tertiary alkyl phenols
|
|
GB420636A
|
|
Improvements in or relating to the production of alkyl derivatives of phenolic compounds
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