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DE426842C
|
|
Process for the production of tanning agents which are easily soluble in cold water
|
|
GB173757A
|
|
Manufacture of salts of sulphonated coumarone resins
|
|
GB146181A
|
|
Improved manufacture of tanning agents
|
|
GB146167A
|
|
Improved manufacture of tanning agents
|
|
GB172048A
|
|
Improved manufacture of tanning agents
|
|
GB171729A
|
|
Manufacture of tanning agents
|
|
DE354165C
|
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Process for the preparation of a tanning and leather lubricant from oxy fatty acids and phenol
|
|
DE361055C
|
|
Process for tanning and coloring skins
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DE353076C
|
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Process for tanning skin
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