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GB896875A
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Ammonia-formaldehyde reaction products
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Production of 1-methylcyclopentanone-2
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GB611413A
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Product applicable in leather manufacture, and process for the manufacture thereof
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Improvements in processes for recovering volatile substances from gases
|
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US2160406A
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Product for inhibiting the attack on metals by acids or salts and its applications
|
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US2096734A
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Process for concentrating and purifying acetic acid from pyroligneous products
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GB414558A
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Improved process and apparatus for the continuous extraction or treatment of liquids
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GB336681A
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Improved manufacture of di-alkyl sulphates
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CA664658A
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Products of reaction between ammonia and formaldehyde
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